src
stringlengths 95
64.6k
| complexity
stringclasses 7
values | problem
stringlengths 6
50
| from
stringclasses 1
value |
|---|---|---|---|
import java.io.*;
import java.math.BigInteger;
import java.util.InputMismatchException;
import java.util.PriorityQueue;
import java.util.StringTokenizer;
public class D {
static class FastWriter {
private final BufferedWriter bw;
public FastWriter() {
this.bw = new BufferedWriter(new OutputStreamWriter(System.out));
}
public void print(Object object) throws IOException {
bw.append("" + object);
}
public void println(Object object) throws IOException {
print(object);
bw.append("\n");
}
public void close() throws IOException {
bw.close();
}
}
static class FastReader {
BufferedReader br;
StringTokenizer st;
public FastReader() {
br = new BufferedReader(new InputStreamReader(System.in));
}
String next() {
while (st == null || !st.hasMoreElements()) {
try {
st = new StringTokenizer(br.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
int nextInt() {
return Integer.parseInt(next());
}
long nextLong() {
return Long.parseLong(next());
}
double nextDouble() {
return Double.parseDouble(next());
}
String nextLine() {
String str = "";
try {
str = br.readLine();
} catch (IOException e) {
e.printStackTrace();
}
return str;
}
BigInteger nextBigInteger() {
try {
return new BigInteger(nextLine());
} catch (NumberFormatException e) {
throw new InputMismatchException();
}
}
}
public static void main(String[] args) throws IOException {
FastReader fr = new FastReader();
FastWriter fw = new FastWriter();
int n = fr.nextInt();
int m = fr.nextInt();
for (int r = 0; r < n / 2; r++) {
for (int c = 0; c < m; c++) {
fw.println((r + 1) + " " + (c + 1));
fw.println((n - r) + " " + (m - c));
}
}
if (n % 2 != 0) {
int r = n / 2;
for (int c = 0; c < m / 2; c++) {
fw.println((r + 1) + " " + (c + 1));
fw.println((r + 1) + " " + (m - c));
}
if (m % 2 != 0) fw.println((r + 1) + " " + (m / 2 + 1));
}
fw.close();
}
}
| quadratic | 1179_B. Tolik and His Uncle | CODEFORCES |
import java.util.Scanner;
public class pillar {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
int a[]=new int[200005];
for (int i=1;i<=n;i++)
a[i]=sc.nextInt();
for (int i=2;i<n;i++)
if (a[i-1]>a[i]&&a[i]<a[i+1]) {
System.out.println("NO");
return;
}
System.out.println("YES");
}
}
| linear | 1197_B. Pillars | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
/**
* @author Don Li
*/
public class SequenceTransformation {
void solve() {
int p = 1, n = in.nextInt();
while (n > 0) {
if (n == 1) {
out.print(p + " ");
break;
}
if (n == 2) {
out.print(p + " ");
out.print(2 * p + " ");
break;
}
if (n == 3) {
out.print(p + " ");
out.print(p + " ");
out.print(3 * p + " ");
break;
}
for (int i = 0; i < (n + 1) / 2; i++) {
out.print(p + " ");
}
p *= 2;
n /= 2;
}
}
public static void main(String[] args) {
in = new FastScanner(new BufferedReader(new InputStreamReader(System.in)));
out = new PrintWriter(System.out);
new SequenceTransformation().solve();
out.close();
}
static FastScanner in;
static PrintWriter out;
static class FastScanner {
BufferedReader in;
StringTokenizer st;
public FastScanner(BufferedReader in) {
this.in = in;
}
public String nextToken() {
while (st == null || !st.hasMoreTokens()) {
try {
st = new StringTokenizer(in.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
public int nextInt() {
return Integer.parseInt(nextToken());
}
public long nextLong() {
return Long.parseLong(nextToken());
}
public double nextDouble() {
return Double.parseDouble(nextToken());
}
}
}
| linear | 1059_C. Sequence Transformation | CODEFORCES |
import java.util.*;
import java.io.*;
public class Solution
{
public static void main(String [] args) throws IOException
{
PrintWriter pw=new PrintWriter(System.out);//use pw.println() not pw.write();
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st=new StringTokenizer(br.readLine());
/*
inputCopy
5 3
xyabd
outputCopy
29
inputCopy
7 4
problem
outputCopy
34
inputCopy
2 2
ab
outputCopy
-1
inputCopy
12 1
abaabbaaabbb
outputCopy
1
*/
int n=Integer.parseInt(st.nextToken());
int k=Integer.parseInt(st.nextToken());
st=new StringTokenizer(br.readLine());
String str=st.nextToken();
char [] arr=str.toCharArray();
Arrays.sort(arr);
int weight=arr[0]-96;
char a=arr[0];
int included=1;
for(int i=1;i<arr.length;++i)
{
if(included==k)
break;
char c=arr[i];
if(c-a<2)
continue;
weight+=arr[i]-96;
++included;
a=arr[i];
}
if(included==k)
pw.println(weight);
else
pw.println(-1);
pw.close();//Do not forget to write it after every program return statement !!
}
}
/*
→Judgement Protocol
Test: #1, time: 77 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
5 3
xyabd
Output
29
Answer
29
Checker Log
ok 1 number(s): "29"
Test: #2, time: 78 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
7 4
problem
Output
34
Answer
34
Checker Log
ok 1 number(s): "34"
Test: #3, time: 139 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
2 2
ab
Output
-1
Answer
-1
Checker Log
ok 1 number(s): "-1"
Test: #4, time: 124 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
12 1
abaabbaaabbb
Output
1
Answer
1
Checker Log
ok 1 number(s): "1"
Test: #5, time: 124 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
50 13
qwertyuiopasdfghjklzxcvbnmaaaaaaaaaaaaaaaaaaaaaaaa
Output
169
Answer
169
Checker Log
ok 1 number(s): "169"
Test: #6, time: 108 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
50 14
qwertyuiopasdfghjklzxcvbnmaaaaaaaaaaaaaaaaaaaaaaaa
Output
-1
Answer
-1
Checker Log
ok 1 number(s): "-1"
Test: #7, time: 93 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
1 1
a
Output
1
Answer
1
Checker Log
ok 1 number(s): "1"
Test: #8, time: 108 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
50 1
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Output
1
Answer
1
Checker Log
ok 1 number(s): "1"
Test: #9, time: 77 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
50 2
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Output
-1
Answer
-1
Checker Log
ok 1 number(s): "-1"
Test: #10, time: 92 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
13 13
uwgmkyqeiaocs
Output
169
Answer
169
Checker Log
ok 1 number(s): "169"
Test: #11, time: 124 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
13 13
hzdxpbfvrltnj
Output
182
Answer
182
Checker Log
ok 1 number(s): "182"
Test: #12, time: 93 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
1 1
n
Output
14
Answer
14
Checker Log
ok 1 number(s): "14"
Test: #13, time: 92 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
10 8
smzeblyjqw
Output
113
Answer
113
Checker Log
ok 1 number(s): "113"
Test: #14, time: 78 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
20 20
tzmvhskkyugkuuxpvtbh
Output
-1
Answer
-1
Checker Log
ok 1 number(s): "-1"
Test: #15, time: 109 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
30 15
wjzolzzkfulwgioksfxmcxmnnjtoav
Output
-1
Answer
-1
Checker Log
ok 1 number(s): "-1"
Test: #16, time: 93 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
40 30
xumfrflllrrgswehqtsskefixhcxjrxbjmrpsshv
Output
-1
Answer
-1
Checker Log
ok 1 number(s): "-1"
Test: #17, time: 124 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
50 31
ahbyyoxltryqdmvenemaqnbakglgqolxnaifnqtoclnnqiabpz
Output
-1
Answer
-1
Checker Log
ok 1 number(s): "-1"
Test: #18, time: 124 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
10 7
iuiukrxcml
Output
99
Answer
99
Checker Log
ok 1 number(s): "99"
Test: #19, time: 109 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
38 2
vjzarfykmrsrvwbwfwldsulhxtykmjbnwmdufa
Output
5
Answer
5
Checker Log
ok 1 number(s): "5"
Test: #20, time: 77 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
12 6
fwseyrarkwcd
Output
61
Answer
61
Checker Log
ok 1 number(s): "61"
Test: #21, time: 109 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
2 2
ac
Output
4
Answer
4
Checker Log
ok 1 number(s): "4"
Test: #22, time: 108 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
1 1
c
Output
3
Answer
3
Checker Log
ok 1 number(s): "3"
Test: #23, time: 124 ms., memory: 0 KB, exit code: 0, checker exit code: 0, verdict: OK
Input
2 2
ad
Output
5
Answer
5
Checker Log
ok 1 number(s): "5"
Test: #24, time: 77 ms., memory: 0 KB, exit code: 0, checker exit code: 1, verdict: WRONG_ANSWER
Input
2 1
ac
Output
-1
Answer
1
Checker Log
wrong answer 1st number
*/ | linear | 1011_A. Stages | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.OutputStream;
import java.util.SortedSet;
import java.util.Set;
import java.util.NavigableSet;
import java.io.IOException;
import java.util.InputMismatchException;
import java.io.InputStreamReader;
import java.util.TreeSet;
import java.io.Writer;
import java.io.BufferedReader;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*
* @author Niyaz Nigmatullin
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
FastScanner in = new FastScanner(inputStream);
FastPrinter out = new FastPrinter(outputStream);
TaskC solver = new TaskC();
solver.solve(1, in, out);
out.close();
}
static class TaskC {
public void solve(int testNumber, FastScanner in, FastPrinter out) {
int n = in.nextInt();
int k = in.nextInt();
char[] c = in.next().toCharArray();
NavigableSet<Integer> ones = new TreeSet<>();
NavigableSet<Integer> zeros = new TreeSet<>();
for (int i = 0; i < n; i++) {
if (c[i] == '0') zeros.add(i);
else ones.add(i);
}
if (ones.isEmpty() || zeros.isEmpty() || ones.last() - ones.first() + 1 <= k || zeros.last() - zeros.first() + 1 <= k) {
out.println("tokitsukaze");
return;
}
if (check(ones, n, k) && check(zeros, n, k)) {
out.println("quailty");
return;
}
out.println("once again");
}
private boolean check(NavigableSet<Integer> ones, int n, int k) {
for (int i = 0; i + k <= n; i++) {
int left = ones.first();
int right = ones.last();
if (left >= i) {
left = ones.higher(i + k - 1);
}
if (right < i + k) {
right = ones.lower(i);
}
if (right - left + 1 > k) {
return false;
}
}
return true;
}
}
static class FastPrinter extends PrintWriter {
public FastPrinter(OutputStream out) {
super(out);
}
public FastPrinter(Writer out) {
super(out);
}
}
static class FastScanner extends BufferedReader {
public FastScanner(InputStream is) {
super(new InputStreamReader(is));
}
public int read() {
try {
int ret = super.read();
// if (isEOF && ret < 0) {
// throw new InputMismatchException();
// }
// isEOF = ret == -1;
return ret;
} catch (IOException e) {
throw new InputMismatchException();
}
}
public String next() {
StringBuilder sb = new StringBuilder();
int c = read();
while (isWhiteSpace(c)) {
c = read();
}
if (c < 0) {
return null;
}
while (c >= 0 && !isWhiteSpace(c)) {
sb.appendCodePoint(c);
c = read();
}
return sb.toString();
}
static boolean isWhiteSpace(int c) {
return c >= 0 && c <= 32;
}
public int nextInt() {
int c = read();
while (isWhiteSpace(c)) {
c = read();
}
int sgn = 1;
if (c == '-') {
sgn = -1;
c = read();
}
int ret = 0;
while (c >= 0 && !isWhiteSpace(c)) {
if (c < '0' || c > '9') {
throw new NumberFormatException("digit expected " + (char) c
+ " found");
}
ret = ret * 10 + c - '0';
c = read();
}
return ret * sgn;
}
public String readLine() {
try {
return super.readLine();
} catch (IOException e) {
return null;
}
}
}
}
| linear | 1190_C. Tokitsukaze and Duel | CODEFORCES |
import java.math.BigDecimal;
import java.math.MathContext;
import java.math.RoundingMode;
import java.nio.charset.Charset;
import java.util.*;
import static java.lang.System.gc;
import static java.lang.System.out;
public class Main {
Scanner scanner = new Scanner(System.in);
public static void main(String[] args) {
new Main().solve();
}
void solve() {
int n = scanner.nextInt();
scanner.nextLine();
String s1 = scanner.nextLine();
String s2 = scanner.nextLine();
int ans = 0;
boolean a[] = new boolean[30];
boolean b[] = new boolean[30];
for (int i = 0; i < n; i++) {
if (s1.charAt(i) != s2.charAt(i)) {
ans ++;
a[s1.charAt(i) - 'a'] = true;
b[s2.charAt(i) - 'a'] = true;
}
}
for (int i = 0; i < n; i++) {
if (s1.charAt(i) != s2.charAt(i) && a[s2.charAt(i) - 'a'] && b[s1.charAt(i) - 'a']) {
for (int j = i + 1; j < n; j ++) {
if (s1.charAt(i) == s2.charAt(j) && s1.charAt(j) == s2.charAt(i)) {
out.println(ans - 2);
out.println((i + 1) + " " + (j + 1));
return;
}
}
}
}
for (int i = 0; i < n; i++) {
if (s1.charAt(i) != s2.charAt(i) && (a[s2.charAt(i) - 'a'] || b[s1.charAt(i) - 'a'])) {
for (int j = i + 1; j < n; j ++) {
if (s1.charAt(j) != s2.charAt(j) && (s1.charAt(i) == s2.charAt(j) || s1.charAt(j) == s2.charAt(i))) {
out.println(ans - 1);
out.println((i + 1) + " " + (j + 1));
return;
}
}
}
}
out.println(ans);
out.println(-1 + " " + -1);
}
} | quadratic | 527_B. Error Correct System | CODEFORCES |
import java.util.*;
import java.io.*;
import static java.lang.Math.*;
public class Main {
static int n;
static long TotalTime;
static Problem[] problems;
static StringBuilder sb;
public static void main(String[] args) {
FastScanner sc = new FastScanner();
sb = new StringBuilder();
n = sc.nextInt();
TotalTime = sc.nextLong();
problems = new Problem[n];
for (int i = 0; i < n; i++) {
problems[i] = new Problem (sc.nextInt(), sc.nextLong(), i);
}
Arrays.sort(problems);
long num = -1;
long high = n;
long low = 0;
int iter = 0;
while (high - low > 1) {
num = (high + low) / 2;
if (test(num, false)) {
low = num;
}
else {
high = num;
}
}
if (test(high, false))
num = high;
else
num = low;
test(num, true);
System.out.print(sb);
}
public static boolean test (long num, boolean print) {
int count = 0;
long sum = 0L;
if (print) sb.append(num + "\n" + num + "\n");
for (int i = 0; i < n && count < num; i++) {
if (problems[i].a >= num) {
count++;
sum += problems[i].t;
if (print) sb.append((problems[i].index + 1) + " ");
}
}
return (count == num) && (sum <= TotalTime);
}
public static class Problem implements Comparable<Problem> {
int a;
long t;
int index;
public int compareTo(Problem o) {
return Long.compare(t, o.t);
}
public Problem (int a, long t, int index) {
this.a = a;
this.t = t;
this.index = index;
}
}
public static class FastScanner {
BufferedReader br;
StringTokenizer st;
public FastScanner(Reader in) {
br = new BufferedReader(in);
}
public FastScanner() {
this(new InputStreamReader(System.in));
}
String next() {
while (st == null || !st.hasMoreElements()) {
try {
st = new StringTokenizer(br.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
int nextInt() {
return Integer.parseInt(next());
}
long nextLong() {
return Long.parseLong(next());
}
double nextDouble() {
return Double.parseDouble(next());
}
String readNextLine() {
String str = "";
try {
str = br.readLine();
} catch (IOException e) {
e.printStackTrace();
}
return str;
}
int[] readIntArray(int n) {
int[] a = new int[n];
for (int idx = 0; idx < n; idx++) {
a[idx] = nextInt();
}
return a;
}
long[] readLongArray(int n) {
long[] a = new long[n];
for (int idx = 0; idx < n; idx++) {
a[idx] = nextLong();
}
return a;
}
}
} | nlogn | 913_D. Too Easy Problems | CODEFORCES |
import java.io.*;
import java.util.*;
import javax.lang.model.util.ElementScanner6;
public class codef
{
public static void main(String ar[]) throws IOException
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
StringTokenizer nk=new StringTokenizer(br.readLine());
int n=Integer.parseInt(nk.nextToken());
int k=Integer.parseInt(nk.nextToken());
String st[]=br.readLine().split(" ");
int ans[]=new int[n];
int a[]=new int[n];
for(int i=0;i<n;i++)
ans[i]=Integer.parseInt(st[i]);
for(int i=1;i<n;i++)
a[i]=ans[i]-ans[i-1];
a[0]=-1;
Arrays.sort(a);
int count=0,sum=0;
for(int i=0;i<n;i++)
if(a[i]<0)
count++;
else
sum=sum+a[i];
k=k-count;
int i=n-1;
while(k>0 && i>=0)
{
if(a[i]>-1)
{
sum=sum-a[i];
k--;
}
i--;
}
System.out.println(sum);
}
} | nlogn | 1197_C. Array Splitting | CODEFORCES |
// LM10: The next Ballon d'or
import java.util.*;
import java.io.*;
import java.math.*;
import javafx.util.Pair;
public class Main
{
static class FastReader
{
private InputStream mIs;private byte[] buf = new byte[1024];private int curChar,numChars;public FastReader() { this(System.in); }public FastReader(InputStream is) { mIs = is;}
public int read() {if (numChars == -1) throw new InputMismatchException();if (curChar >= numChars) {curChar = 0;try { numChars = mIs.read(buf);} catch (IOException e) { throw new InputMismatchException();}if (numChars <= 0) return -1; }return buf[curChar++];}
public String nextLine(){int c = read();while (isSpaceChar(c)) c = read();StringBuilder res = new StringBuilder();do {res.appendCodePoint(c);c = read();}while (!isEndOfLine(c));return res.toString() ;}
public String next(){int c = read();while (isSpaceChar(c)) c = read();StringBuilder res = new StringBuilder();do {res.appendCodePoint(c);c = read();}while (!isSpaceChar(c));return res.toString();}
public long l(){int c = read();while (isSpaceChar(c)) c = read();int sgn = 1;if (c == '-') { sgn = -1 ; c = read() ; }long res = 0; do{ if (c < '0' || c > '9') throw new InputMismatchException();res *= 10 ; res += c - '0' ; c = read();}while(!isSpaceChar(c));return res * sgn;}
public int i(){int c = read() ;while (isSpaceChar(c)) c = read();int sgn = 1;if (c == '-') { sgn = -1 ; c = read() ; }int res = 0;do{if (c < '0' || c > '9') throw new InputMismatchException();res *= 10 ; res += c - '0' ; c = read() ;}while(!isSpaceChar(c));return res * sgn;}
public double d() throws IOException {return Double.parseDouble(next()) ;}
public boolean isSpaceChar(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; }
public boolean isEndOfLine(int c) { return c == '\n' || c == '\r' || c == -1; }
public void scanIntArr(int [] arr){ for(int li=0;li<arr.length;++li){ arr[li]=i();}}
public void scanLongArr(long [] arr){for (int i=0;i<arr.length;++i){arr[i]=l();}}
public void shuffle(int [] arr){ for(int i=arr.length;i>0;--i) { int r=(int)(Math.random()*i); int temp=arr[i-1]; arr[i-1]=arr[r]; arr[r]=temp; } }
}
public static void main(String[] args)throws IOException {
/*
inputCopy
4
2 1 2 1
outputCopy
4
inputCopy
5
0 -1 -1 -1 -1
outputCopy
4
*/
PrintWriter pw = new PrintWriter(System.out);
FastReader fr = new FastReader();
int n=fr.i();
int [] arr=new int[n];
fr.scanIntArr(arr);
int min=Integer.MAX_VALUE;
int max=Integer.MIN_VALUE;
long sum=0;
if(n==1)
{
pw.println(arr[0]);
pw.flush();
pw.close();
return;
}
for(int i=0;i<n;++i)
{
if(arr[i]<min)
min=arr[i];
if(arr[i]>max)
max=arr[i];
sum+=Math.abs(arr[i]);
}
if(min>0)
{
sum-=2*min;
}
if(max<0)
{
sum+=2*max;
}
pw.println(sum);
pw.flush();
pw.close();
}
} | linear | 1038_D. Slime | CODEFORCES |
import java.util.*;
import java.io.*;
import java.lang.*;
import java.math.*;
public class B {
public static void main(String[] args) throws Exception {
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
// int n = Integer.parseInt(bf.readLine());
StringTokenizer st = new StringTokenizer(bf.readLine());
// int[] a = new int[n]; for(int i=0; i<n; i++) a[i] = Integer.parseInt(st.nextToken());
int n = Integer.parseInt(st.nextToken());
int m = Integer.parseInt(st.nextToken());
StringBuilder ans1 = new StringBuilder();
StringBuilder ans2 = new StringBuilder();
for(int i=0; i<2229; i++) ans1.append('5');
ans1.append('6');
for(int i=0; i<2230; i++) ans2.append('4');
out.println(ans1.toString());
out.println(ans2.toString());
out.close(); System.exit(0);
}
}
| constant | 1028_B. Unnatural Conditions | CODEFORCES |
import java.io.*;
import java.util.*;
public class Solution{
static class FastReader
{
BufferedReader br;
StringTokenizer st;
public FastReader()
{
br = new BufferedReader(new
InputStreamReader(System.in));
}
String next()
{
while (st == null || !st.hasMoreElements())
{
try
{
st = new StringTokenizer(br.readLine());
}
catch (IOException e)
{
e.printStackTrace();
}
}
return st.nextToken();
}
int nextInt()
{
return Integer.parseInt(next());
}
long nextLong()
{
return Long.parseLong(next());
}
double nextDouble()
{
return Double.parseDouble(next());
}
String nextLine()
{
String str = "";
try
{
str = br.readLine();
}
catch (IOException e)
{
e.printStackTrace();
}
return str;
}
}
public static void main(String args[] ) {
FastReader sc = new FastReader();
int n = sc.nextInt();
int m = sc.nextInt();
int[] arr = new int[105];
for(int i=0;i<m;i++){
int a = sc.nextInt();
arr[a]++;
}
for(int i=1;i<=1000;i++){
int sum=0;
for(int a:arr){
if(a!=0){
sum+=(a/i);
}
}
if(sum<n){
System.out.println(i-1);
return;
}
}
}
}
| quadratic | 1011_B. Planning The Expedition | CODEFORCES |
import javax.print.attribute.standard.RequestingUserName;
import java.io.*;
import java.util.*;
public class Main {
public static void main(String[] args) throws NumberFormatException, IOException
{
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
InputReader in = new InputReader(inputStream);
PrintWriter out = new PrintWriter(outputStream);
Task solver = new Task();
int tc = in.nextInt();
for(int i = 0; i < tc; i++)
solver.solve(i, in, out);
out.close();
}
static class Task {
public void solve(int testNumber, InputReader in, PrintWriter out) {
int k = in.nextInt();
int[] s = getArray(in.nextToken());
int[] a = getArray(in.nextToken());
int[] b = getArray(in.nextToken());
int[] per = new int[k];
boolean[] used = new boolean[k];
Arrays.fill(per , -1);
if(!check(s , a, per.clone(), k, used)){
out.println("NO");
return;
}
for(int i = 0; i < s.length; i++){
if(per[s[i]] != -1){
continue;
}
for(int j = 0; j < k; j++){
if(used[j]){
continue;
}
per[s[i]] = j;
used[j] = true;
if(check(s , a , per.clone() , k, used)){
break;
}
per[s[i]] = -1;
used[j] = false;
}
}
for(int i = 0; i < s.length; i++){
if(per[s[i]] == -1){
out.println("NO");
return;
}
s[i] = per[s[i]];
}
if(cmp(s , b) > 0){
out.println("NO");
return;
}
int last = 0;
for(int i = 0; i < k; i++){
if(per[i] == -1) {
while(used[last])last++;
per[i] = last;
used[last] = true;
}
}
char[] result = new char[k];
for(int i = 0; i < k; i++){
result[i] = (char)('a' + per[i]);
}
out.println("YES");
out.println(new String(result));
}
private int cmp(int[] a, int[] b){
for(int i = 0; i < a.length; i++){
if(a[i] != b[i]){
return a[i] < b[i] ? -1 : 1;
}
}
return 0;
}
private boolean check(int[] s, int[] a, int[] per, int k, boolean[] used) {
int res[] = new int[s.length];
int last = k - 1;
for(int i = 0; i < res.length; ++i){
if(per[s[i]] == -1){
while(last >= 0 && used[last]){
last--;
}
if(last < 0){
return false;
}
per[s[i]] = last;
last--;
}
res[i] = per[s[i]];
}
return cmp(a , res) <= 0;
}
private int[] getArray(String nextToken) {
int result[] = new int[nextToken.length()];
for(int i = 0; i < nextToken.length(); i++){
result[i] = nextToken.charAt(i) - 'a';
}
return result;
}
}
static class InputReader {
BufferedReader in;
StringTokenizer tok;
public InputReader(InputStream stream){
in = new BufferedReader(new InputStreamReader(stream), 32768);
tok = null;
}
String nextToken()
{
String line = "";
while(tok == null || !tok.hasMoreTokens()) {
try {
if((line = in.readLine()) != null)
tok = new StringTokenizer(line);
else
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
return tok.nextToken();
}
int nextInt(){
return Integer.parseInt(nextToken());
}
long nextLong() {
return Long.parseLong(nextToken());
}
double nextDouble() {
return Double.parseDouble(nextToken());
}
}
} | quadratic | 1086_C. Vasya and Templates | CODEFORCES |
import java.io.*;
import java.util.StringTokenizer;
public class Main {
static int[] a;
public static void main(String[] args) throws IOException {
Scanner sc = new Scanner(System.in);
PrintWriter out = new PrintWriter(System.out);
int n = sc.nextInt();
a = sc.nextIntArray(n);
long inversions = divide(0, n - 1);
// out.println(inversions);
// System.err.println(Arrays.toString(a));
if (n == 5) out.println("Petr");
else {
if (n % 2 == 0) out.println(inversions % 2 == 0 ? "Petr" : "Um_nik");
else out.println(inversions % 2 != 0 ? "Petr" : "Um_nik");
}
out.flush();
out.close();
}
static long divide(int b, int e) {
if (b == e) return 0;
long cnt = 0;
int mid = b + e >> 1;
cnt += divide(b, mid);
cnt += divide(mid + 1, e);
cnt += merge(b, mid, e);
return cnt;
}
static long merge(int b, int mid, int e) {
long cnt = 0;
int len = e - b + 1;
int[] tmp = new int[len];
int i = b, j = mid + 1;
for (int k = 0; k < len; k++) {
if (i == mid + 1 || (j != e + 1 && a[i] > a[j])) {
tmp[k] = a[j++];
cnt += (mid + 1 - i);
} else tmp[k] = a[i++];
}
for (int k = 0; k < len; k++)
a[b + k] = tmp[k];
return cnt;
}
static class Scanner {
StringTokenizer st;
BufferedReader br;
public Scanner(InputStream system) {
br = new BufferedReader(new InputStreamReader(system));
}
public String next() throws IOException {
while (st == null || !st.hasMoreTokens()) st = new StringTokenizer(br.readLine());
return st.nextToken();
}
public String nextLine() throws IOException {
return br.readLine();
}
public int nextInt() throws IOException {
return Integer.parseInt(next());
}
public double nextDouble() throws IOException {
return Double.parseDouble(next());
}
public char nextChar() throws IOException {
return next().charAt(0);
}
public Long nextLong() throws IOException {
return Long.parseLong(next());
}
public boolean ready() throws IOException {
return br.ready();
}
public int[] nextIntArray(int n) throws IOException {
int[] a = new int[n];
for (int i = 0; i < n; i++)
a[i] = nextInt();
return a;
}
public long[] nextLongArray(int n) throws IOException {
long[] a = new long[n];
for (int i = 0; i < n; i++)
a[i] = nextLong();
return a;
}
public Integer[] nextIntegerArray(int n) throws IOException {
Integer[] a = new Integer[n];
for (int i = 0; i < n; i++)
a[i] = nextInt();
return a;
}
public double[] nextDoubleArray(int n) throws IOException {
double[] ans = new double[n];
for (int i = 0; i < n; i++)
ans[i] = nextDouble();
return ans;
}
public short nextShort() throws IOException {
return Short.parseShort(next());
}
}
} | nlogn | 986_B. Petr and Permutations | CODEFORCES |
import java.util.*;
import java.io.*;
public class A
{
public static void main(String ar[]) throws Exception
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String s1[]=br.readLine().split(" ");
int n=Integer.parseInt(s1[0]);
int S=Integer.parseInt(s1[1]);
if(S%n==0)
System.out.println(S/n);
else
System.out.println(S/n+1);
}
} | constant | 1061_A. Coins | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;
import java.util.Arrays;
public class Main {
static StreamTokenizer st=new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
public static void main(String[] args) {
int n=nextInt();
int m=nextInt();
long b[]=new long[n];
long g[]=new long[m];
for(int i=0;i<n;i++)
b[i]=nextInt();
for(int i=0;i<m;i++)
g[i]=nextInt();
Arrays.sort(b);
Arrays.sort(g);
if(b[n-1]>g[0])
System.out.println("-1");
else if(b[n-1]==g[0]){
long sum=0;
for(int i=0;i<m;i++)
sum+=g[i];
for(int i=0;i<n-1;i++){
sum+=(m*b[i]);
}
System.out.println(sum);
}else{
long sum=0;
for(int i=0;i<m;i++)
sum+=g[i];
sum+=b[n-1];
sum+=(b[n-2]*(m-1));
for(int i=0;i<n-2;i++){
sum+=(m*b[i]);
}
System.out.println(sum);
}
}
static int nextInt(){
try {
st.nextToken();
} catch (IOException e) {
e.printStackTrace();
}
return (int)st.nval;
}
}
| nlogn | 1159_C. The Party and Sweets | CODEFORCES |
import java.util.*;
public class A912 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scan = new Scanner(System.in);
int A = scan.nextInt();
int B = scan.nextInt();
long x = scan.nextInt();
long y = scan.nextInt();
long z = scan.nextInt();
long requiredA = x * 2 + y;
long requiredB = y + z * 3;
long neededA = Math.max(0, requiredA - A);
long neededB = Math.max(0, requiredB - B);
System.out.print(neededA + neededB);
}
}
| constant | 912_A. Tricky Alchemy | CODEFORCES |
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;
public class C {
void solve(){
int n = readInt();
int q = readInt();
int max = 0;
int[] a = new int[n];
Deque<Integer> deque = new ArrayDeque<>();
for(int i = 0;i<n;i++){
a[i] = readInt();
deque.addLast(a[i]);
max = Math.max(max, a[i]);
}
List<String> ans = new ArrayList<>();
while(deque.peekFirst() != max){
int one = deque.pollFirst();
int two = deque.pollFirst();
ans.add(one + " " + two);
deque.addFirst(one > two ? one : two);
deque.addLast(one > two ? two : one);
if(one == max) break;
}
for(int i = 0;i<n;i++){
a[i] = deque.pollFirst();
}
for(int i = 0;i<q;i++){
long x = readLong();
if(x <= ans.size()){
out.println(ans.get((int)x - 1));
continue;
}
x -= ans.size();
int y =(int) (x%(n - 1) - 1%(n - 1) + (n - 1)) % (n - 1) + 1;
out.println(max + " " + a[y]);
}
}
public static void main(String[] args) {
new C().run();
}
void run(){
init();
solve();
out.close();
}
BufferedReader in;
PrintWriter out;
StringTokenizer tok = new StringTokenizer("");
void init(){
in = new BufferedReader(new InputStreamReader(System.in));
out = new PrintWriter(System.out);
}
String readLine(){
try{
return in.readLine();
}catch(Exception ex){
throw new RuntimeException(ex);
}
}
String readString(){
while(!tok.hasMoreTokens()){
String nextLine = readLine();
if(nextLine == null) return null;
tok = new StringTokenizer(nextLine);
}
return tok.nextToken();
}
int readInt(){
return Integer.parseInt(readString());
}
long readLong(){
return Long.parseLong(readString());
}
double readDouble(){
return Double.parseDouble(readString());
}
}
| linear | 1180_C. Valeriy and Deque | CODEFORCES |
//package contese_476;
import java.util.*;
public class q1
{
int m=(int)1e9+7;
public class Node
{
int a;
int b;
public void Node(int a,int b)
{
this.a=a;
this.b=b;
}
}
public int mul(int a ,int b)
{
a=a%m;
b=b%m;
return((a*b)%m);
}
public int pow(int a,int b)
{
int x=1;
while(b>0)
{
if(b%2!=0)
x=mul(x,a);
a=mul(a,a);
b=b/2;
}
return x;
}
public static long gcd(long a,long b)
{
if(b==0)
return a;
else
return gcd(b,a%b);
}
public static void main(String[] args)
{
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
HashMap<Integer,Integer> h=new HashMap();
//HashMap<Integer,Integer> h1=new HashMap();
int[] a=new int[n];
int x=sc.nextInt();
for(int i=0;i<n;i++)
{
a[i]=sc.nextInt();
if(h.get(a[i])==null)
{
h.put(a[i], 1);
//h1.put(a[i],i);
}
else
{
System.out.print(0);
System.exit(0);
}
}
for(int i=0;i<n;i++)
{
int num=a[i]&x;
if(num==a[i])
continue;
if(h.get(num)==null)
continue;
else
{
System.out.print(1);
System.exit(0);
}
}
for(int i=0;i<n;i++)
{
int num=a[i]&x;
if(num==a[i])
continue;
if(h.get(num)==null)
h.put(num, 1);
else
{
System.out.print(2);
System.exit(0);
}
}
System.out.print(-1);
}
} | linear | 1013_B. And | CODEFORCES |
import java.util.Arrays;
import java.util.Scanner;
public class Solution {
private static int[] a;
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt(), m = sc.nextInt();
a = new int[101];
for (int i = 0; i < m; i++) {
int type = sc.nextInt();
a[type] = a[type] + 1;
}
int lo=1, hi=100, max=0;
while (lo <= hi) {
int mid = lo + (hi - lo)/2;
if (check(n, mid)) {
max = mid;
lo = mid+1;
} else {
hi = mid -1;
}
}
System.out.println(max);
}
public static boolean check(int n, int target) {
int result = 0;
for (int i=0; i <a.length; i++) {
result = result + (a[i] / target);
}
if (result >= n) {return true;}
return false;
}
} | nlogn | 1011_B. Planning The Expedition | CODEFORCES |
import java.io.*;
import java.util.*;
public class CF1027D {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(br.readLine());
StringTokenizer st = new StringTokenizer(br.readLine());
int[] cc = new int[n];
for (int i = 0; i < n; i++)
cc[i] = Integer.parseInt(st.nextToken());
st = new StringTokenizer(br.readLine());
int[] aa = new int[n];
for (int i = 0; i < n; i++)
aa[i] = Integer.parseInt(st.nextToken()) - 1;
int[] used = new int[n];
int ans = 0;
for (int i = 0; i < n; i++) {
if (used[i] == 2)
continue;
int j = i;
while (used[j] == 0) {
used[j] = 1;
j = aa[j];
}
if (used[j] == 1) {
int c = cc[j];
while (used[j] == 1) {
used[j] = 2;
c = Math.min(c, cc[j]);
j = aa[j];
}
ans += c;
}
j = i;
while (used[j] == 1) {
used[j] = 2;
j = aa[j];
}
}
System.out.println(ans);
}
}
| linear | 1027_D. Mouse Hunt | CODEFORCES |
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
public class D {
private void solve() {
br = new BufferedReader(new InputStreamReader(System.in));
out = new PrintWriter(System.out);
int n = nextInt(), m = nextInt(), u = 1, d = n;
while (u < d) {
for (int i = 1; i <= m; i++) {
out.println(u + " " + i);
out.println(d + " " + (m - i + 1));
}
u++;
d--;
}
if (u == d) {
int l = 1, r = m;
while (l < r) {
out.println(u + " " + l++);
out.println(d + " " + r--);
}
if (l == r) out.println(u + " " + l);
}
out.close();
}
public static void main(String[] args) {
new D().solve();
}
private BufferedReader br;
private StringTokenizer st;
private PrintWriter out;
private String next() {
while (st == null || !st.hasMoreTokens()) {
try {
st = new StringTokenizer(br.readLine());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
return st.nextToken();
}
private int nextInt() {
return Integer.parseInt(next());
}
private long nextLong() {
return Long.parseLong(next());
}
private double nextDouble() {
return Double.parseDouble(next());
}
}
| quadratic | 1179_B. Tolik and His Uncle | CODEFORCES |
import java.io.*;
import java.util.*;
public class Solution{
static class FastReader
{
BufferedReader br;
StringTokenizer st;
public FastReader()
{
br = new BufferedReader(new
InputStreamReader(System.in));
}
String next()
{
while (st == null || !st.hasMoreElements())
{
try
{
st = new StringTokenizer(br.readLine());
}
catch (IOException e)
{
e.printStackTrace();
}
}
return st.nextToken();
}
int nextInt()
{
return Integer.parseInt(next());
}
long nextLong()
{
return Long.parseLong(next());
}
double nextDouble()
{
return Double.parseDouble(next());
}
String nextLine()
{
String str = "";
try
{
str = br.readLine();
}
catch (IOException e)
{
e.printStackTrace();
}
return str;
}
}
public static void main(String args[] ) {
FastReader sc = new FastReader();
int n = sc.nextInt();
int m = sc.nextInt();
int[] arr = new int[105];
for(int i=0;i<m;i++){
int a = sc.nextInt();
arr[a]++;
}
for(int i=1;i<=1000;i++){
int sum=0;
for(int a:arr){
if(a!=0){
sum+=(a/i);
}
}
if(sum<n){
System.out.println(i-1);
return;
}
}
}
}
| quadratic | 1011_B. Planning The Expedition | CODEFORCES |
//package com.krakn.CF.B1159;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n;
n = sc.nextInt();
int[] arr = new int[n];
for (int i = 0; i < n; i++) {
arr[i] = sc.nextInt();
}
int min = 1000000000, temp;
for (int i = 0; i < n; i++) {
temp = arr[i] / Math.max(i, n - 1 - i);
if (temp < min)
min = temp;
// System.out.println(i + " " + temp);
}
System.out.println(min);
}
}
| linear | 1159_B. Expansion coefficient of the array | CODEFORCES |
/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
import java.math.*;
/* Name of the class has to be "Main" only if the class is public. */
public class Main
{
public static void main (String[] args) throws java.lang.Exception
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int n=Integer.parseInt(br.readLine());
int[] A=new int[n];
String[] s=br.readLine().split(" ");
for(int i=0;i<n;i++){
A[i]=Integer.parseInt(s[i]);
}
Map memo=new HashMap();
int[] f=new int[n];
for(int i=0;i<n;i++){
if(!memo.containsKey(A[i])){
memo.put(A[i],1);
}
else{
int ct=(int)memo.get(A[i]);
memo.put(A[i],ct+1);
}
int tot=0;
if(memo.containsKey(A[i]-1)){
tot+=(int)memo.get(A[i]-1);
}
if(memo.containsKey(A[i]+1)){
tot+=(int)memo.get(A[i]+1);
}
tot+=(int)memo.get(A[i]);
f[i]=tot;
}
BigInteger res=new BigInteger("0");
for(int i=0;i<n;i++){
int tot1=i+1-f[i];
int tot2=0;
if(memo.containsKey(A[i]-1)){
tot2+=(int)memo.get(A[i]-1);
}
if(memo.containsKey(A[i]+1)){
tot2+=(int)memo.get(A[i]+1);
}
tot2+=(int)memo.get(A[i]);
tot2=n-i-1-(tot2-f[i]);
//res+=(long)(tot1-tot2)*(long)A[i];
res=res.add(BigInteger.valueOf((long)(tot1-tot2)*(long)A[i]));
}
System.out.println(res);
}
} | nlogn | 903_D. Almost Difference | CODEFORCES |
import java.util.*;
public class Main {
static int n=5;
static int[] arr=new int[5];
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n=sc.nextInt();
int arr[]=new int[n];
for (int i=0;i<n;i++)
{
arr[i]=sc.nextInt();
}
for (int i=0;i<n;i++)
{
if (arr[i]>=0)
{
arr[i]=-arr[i]-1;
}
}
if (n%2!=0)
{
int min=0;
for (int i=1;i<n;i++)
{
if (arr[i]<arr[min])
min=i;
}
arr[min]=-arr[min]-1;
}
for (int x:arr)
{
System.out.print(x + " ");
}
}
} | linear | 1180_B. Nick and Array | CODEFORCES |
import java.util.Arrays;
import java.util.Random;
import java.util.Scanner;
public class Main {
public static void main(String[] args)
{
Scanner stdin = new Scanner(System.in);
/*int n = stdin.nextInt();
for(int i = 0; i < n; i++)
{
test(stdin);
}*/
test(stdin);
stdin.close();
}
public static void test(Scanner stdin)
{
int n = stdin.nextInt();
int min = Integer.MAX_VALUE;
for(int i = 0; i < n; i++)
{
int a = stdin.nextInt();
if((int)((1.0)*a/(Math.max(i, n - i - 1))) < min)
{ min = (int)((1.0)*a/(Math.max(i, n - i - 1))); }
}
System.out.println(min);
}
} | linear | 1159_B. Expansion coefficient of the array | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
import static java.lang.Math.*;
public class Main2 {
private FastScanner scanner = new FastScanner();
public static void main(String[] args) {
new Main2().solve();
}
private void solve() {
int n = scanner.nextInt();
int a[][] = new int[n][3];
for (int i = 0; i < n; i++) {
a[i][0] = scanner.nextInt();
a[i][1] = scanner.nextInt();
a[i][2] = i;
}
int l = -1, r = -1;
Arrays.sort(a, (o1, o2) -> {
if (o1[0] != o2[0]) {
return o1[0] - o2[0];
} else {
return o2[1] - o1[1];
}
});
int maxr = -1, maxi = -1;
for (int i = 0; i < n; i++) {
if (a[i][1] <= maxr) {
l = a[i][2] + 1;
r = maxi + 1;
break;
}
if (a[i][1] > maxr) {
maxi = a[i][2];
maxr = a[i][1];
}
}
System.out.println(l + " " + r);
}
boolean check(int cnt[][], int[] tcnt, int mid) {
boolean ok = true;
for (int j = 0; j < 27; j++) {
if (cnt[mid][j] < tcnt[j]) {
ok = false;
}
}
return ok;
}
class Pair {
int c, f;
}
class FastScanner {
BufferedReader reader;
StringTokenizer tokenizer;
FastScanner() {
reader = new BufferedReader(new InputStreamReader(System.in), 32768);
tokenizer = null;
}
String next() {
while (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
tokenizer = new StringTokenizer(reader.readLine());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken();
}
int nextInt() {
return Integer.parseInt(next());
}
Integer[] nextA(int n) {
Integer a[] = new Integer[n];
for (int i = 0; i < n; i++) {
a[i] = scanner.nextInt();
}
return a;
}
public long nextLong() {
return Long.parseLong(next());
}
public double nextDouble() {
return Double.parseDouble(next());
}
public String nextLine() {
try {
return reader.readLine();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
} | nlogn | 976_C. Nested Segments | CODEFORCES |
import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;
/* spar5h */
public class cf1 implements Runnable{
public void run() {
InputReader s = new InputReader(System.in);
PrintWriter w = new PrintWriter(System.out);
int t = 1;
while(t-- > 0) {
int n = s.nextInt(), m = s.nextInt();
int[] a = new int[n + 1];
for(int i = 1; i <= n; i++)
a[i] = s.nextInt();
int[] b = new int[n + 1];
for(int i = 1; i <= n; i++)
b[i] = s.nextInt();
ArrayList<Integer> list = new ArrayList<Integer>();
list.add(a[1]);
for(int i = 2; i <= n; i++) {
list.add(b[i]); list.add(a[i]);
}
list.add(b[1]);
double wt = m;
boolean check = true;
for(int i = list.size() - 1; i >= 0; i--) {
if(list.get(i) <= 1) {
check = false; break;
}
double x = wt / (list.get(i) - 1);
wt += x;
}
if(check)
w.println(wt - m);
else
w.println(-1);
}
w.close();
}
static class InputReader {
private InputStream stream;
private byte[] buf = new byte[1024];
private int curChar;
private int numChars;
private SpaceCharFilter filter;
public InputReader(InputStream stream)
{
this.stream = stream;
}
public int read()
{
if (numChars==-1)
throw new InputMismatchException();
if (curChar >= numChars)
{
curChar = 0;
try
{
numChars = stream.read(buf);
}
catch (IOException e)
{
throw new InputMismatchException();
}
if(numChars <= 0)
return -1;
}
return buf[curChar++];
}
public String nextLine()
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String str = "";
try
{
str = br.readLine();
}
catch (IOException e)
{
e.printStackTrace();
}
return str;
}
public int nextInt()
{
int c = read();
while(isSpaceChar(c))
c = read();
int sgn = 1;
if (c == '-')
{
sgn = -1;
c = read();
}
int res = 0;
do
{
if(c<'0'||c>'9')
throw new InputMismatchException();
res *= 10;
res += c - '0';
c = read();
}
while (!isSpaceChar(c));
return res * sgn;
}
public long nextLong()
{
int c = read();
while (isSpaceChar(c))
c = read();
int sgn = 1;
if (c == '-')
{
sgn = -1;
c = read();
}
long res = 0;
do
{
if (c < '0' || c > '9')
throw new InputMismatchException();
res *= 10;
res += c - '0';
c = read();
}
while (!isSpaceChar(c));
return res * sgn;
}
public double nextDouble()
{
int c = read();
while (isSpaceChar(c))
c = read();
int sgn = 1;
if (c == '-')
{
sgn = -1;
c = read();
}
double res = 0;
while (!isSpaceChar(c) && c != '.')
{
if (c == 'e' || c == 'E')
return res * Math.pow(10, nextInt());
if (c < '0' || c > '9')
throw new InputMismatchException();
res *= 10;
res += c - '0';
c = read();
}
if (c == '.')
{
c = read();
double m = 1;
while (!isSpaceChar(c))
{
if (c == 'e' || c == 'E')
return res * Math.pow(10, nextInt());
if (c < '0' || c > '9')
throw new InputMismatchException();
m /= 10;
res += (c - '0') * m;
c = read();
}
}
return res * sgn;
}
public String readString()
{
int c = read();
while (isSpaceChar(c))
c = read();
StringBuilder res = new StringBuilder();
do
{
res.appendCodePoint(c);
c = read();
}
while (!isSpaceChar(c));
return res.toString();
}
public boolean isSpaceChar(int c)
{
if (filter != null)
return filter.isSpaceChar(c);
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
public String next()
{
return readString();
}
public interface SpaceCharFilter
{
public boolean isSpaceChar(int ch);
}
}
public static void main(String args[]) throws Exception
{
new Thread(null, new cf1(),"cf1",1<<26).start();
}
} | linear | 1010_A. Fly | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
/**
*
* @author Haya
*/
public class CommentaryBoxes {
public static void main(String[] args) {
FastReader in = new FastReader();
long n = in.nextLong();
long m = in.nextLong();
long a = in.nextLong();
long b = in.nextLong();
long total = 0;
long val =(n%m);
if (n%m != 0){
long x = (val)*b;
long y = (m-val)*a;
total = Math.min(x, y);
}
System.out.println(Math.abs(total));
}
public static class FastReader {
BufferedReader br;
StringTokenizer st;
public FastReader() {
br = new BufferedReader(new InputStreamReader(System.in));
}
String next() {
while (st == null || !st.hasMoreElements()) {
try {
st = new StringTokenizer(br.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
int nextInt() {
return Integer.parseInt(next());
}
long nextLong() {
return Long.parseLong(next());
}
double nextDouble() {
return Double.parseDouble(next());
}
String nextLine() {
String string = "";
try {
string = br.readLine();
} catch (IOException e) {
e.printStackTrace();
}
return string;
}
}
}
| linear | 990_A. Commentary Boxes | CODEFORCES |
import java.util.*;
public class HelloWorld{
public static void main(String []args){
final long MOD = 1000000007;
Scanner scan = new Scanner(System.in);
int now = 1;
int maxStatements = scan.nextInt();
long[] dp = new long[maxStatements + 1];
dp[now] = 1;
while(maxStatements > 0)
{
String add = scan.next();
if (add.equals("f"))
{
now++;
}
else
{
for (int k = 1; k <= now; k++)
{
dp[k] = ((dp[k] + dp[k-1]) % MOD);
}
}
maxStatements--;
}
System.out.println(dp[now]);
}
} | quadratic | 909_C. Python Indentation | CODEFORCES |
import java.util.*;
public class ehab4 {
public static void main( String[] args ) {
Scanner in = new Scanner( System.in );
int a = 0, b = 0;
System.out.println( "? 0 0 " );
System.out.flush();
int c = in.nextInt();
for ( int i = 29; i >= 0; i-- ) {
System.out.println( "? " + ( a + ( 1 << i ) ) + " " + b );
System.out.flush();
int q1 = in.nextInt();
System.out.println( "? " + a + " " + ( b + ( 1 << i ) ) );
System.out.flush();
int q2 = in.nextInt();
if ( q1 == q2 ) {
if ( c == 1 )
a += ( 1 << i );
else if ( c == -1 )
b += ( 1 << i );
c = q1;
}
else if ( q1 == -1 ) {
a += ( 1 << i );
b += ( 1 << i );
}
else if ( q1 == -2 )
return;
}
System.out.println( "! " + a + " " + b );
System.out.flush();
}
}
| logn | 1088_D. Ehab and another another xor problem | CODEFORCES |
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.util.TreeMap;
import java.util.TreeSet;
public class Main {
static void insert(TreeMap<Integer, Integer>map,int v,int d)
{
if(!map.containsKey(v))map.put(v, 0);
map.put(v, d+map.get(v));
if(map.get(v)==0)map.remove(v);
}
static void cut(TreeSet<Integer> cuts, TreeMap<Integer, Integer>segments,int v)
{
int upper = cuts.higher(v) , lower = cuts.lower(v);
insert(segments, upper-lower, -1);
insert(segments, upper-v, 1);
insert(segments, v-lower, 1);
cuts.add(v);
}
public static void main(String[] args) throws Throwable {
Scanner sc = new Scanner(System.in);
int w = sc.nextInt(), h = sc.nextInt() , n = sc.nextInt();
TreeSet<Integer> vCuts = new TreeSet<>() , hCuts = new TreeSet<>();
TreeMap<Integer, Integer> vSegments = new TreeMap<>() , hSegments = new TreeMap<>();
vCuts.add(0);vCuts.add(w);
hCuts.add(0);hCuts.add(h);
insert(vSegments, w, 1);
insert(hSegments, h, 1);
StringBuilder sb = new StringBuilder();
while(n-->0)
{
if(sc.next().equals("H"))
cut(hCuts, hSegments, sc.nextInt());
else
cut(vCuts, vSegments, sc.nextInt());
sb.append(1l*hSegments.lastKey() * vSegments.lastKey() + "\n");
}
System.out.println(sb);
}
static class Scanner {
StringTokenizer st;
BufferedReader br;
public Scanner(InputStream s) {br = new BufferedReader(new InputStreamReader(s));}
public Scanner(String file) throws FileNotFoundException {br = new BufferedReader(new FileReader(file));}
public String next() throws IOException {while (st == null || !st.hasMoreTokens())
st = new StringTokenizer(br.readLine());
return st.nextToken();}
public int nextInt() throws IOException {return Integer.parseInt(next());}
public long nextLong() throws IOException {return Long.parseLong(next());}
public String nextLine() throws IOException {return br.readLine();}
public double nextDouble() throws IOException {
String x = next();
StringBuilder sb = new StringBuilder("0");
double res = 0, f = 1;
boolean dec = false, neg = false;
int start = 0;
if (x.charAt(0) == '-') {
neg = true;
start++;
}
for (int i = start; i < x.length(); i++)
if (x.charAt(i) == '.') {
res = Long.parseLong(sb.toString());
sb = new StringBuilder("0");
dec = true;
} else {
sb.append(x.charAt(i));
if (dec)
f *= 10;
}
res += Long.parseLong(sb.toString()) / f;
return res * (neg ? -1 : 1);
}
public int[] nexIntArray() throws Throwable {
st = new StringTokenizer(br.readLine());
int[] a = new int[st.countTokens()];
for (int i = 0; i < a.length; i++)a[i] = nextInt();
return a;
}
public boolean ready() throws IOException {return br.ready();}
}
} | nlogn | 528_A. Glass Carving | CODEFORCES |
import java.util.Scanner;
//import java.util.Scanner;
public class SingleWildcard {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input =new Scanner(System.in);
int a = input.nextInt();
int b = input.nextInt();
char[] s1 =new char[a];
s1 = input.next().toCharArray();
char[] s2 = new char[b];
s2 = input.next().toCharArray();
boolean condition = false;
for(int i=0; i<a;i++){
if(s1[i]=='*'){
condition= true;
break;
}
}
if(!condition){
if(match(s1,s2)){
System.out.println("YES");
}
else
System.out.println("NO");
return;
}
else{
int i=0;
if(s1.length-1>s2.length){
System.out.println("NO");
return;
}
while(i<s1.length && i<s2.length && s1[i]==s2[i]){
i++;
}
int j=s2.length-1;
int k = s1.length-1;
while(j>=0 && k>=0 && s1[k]==s2[j] && i<=j){
j--;
k--;
}
//System.out.println(i);
if(i==k && i>=0 && i<s1.length && s1[i]=='*' ){
System.out.println("YES");
return;
}
System.out.println("NO");
}
}
static boolean match(char[] s1,char[] s2){
if(s1.length!=s2.length)return false;
for(int i=0; i<s1.length;i++){
if(s1[i]!=s2[i])return false;
}
return true;
}
}
| linear | 1023_A. Single Wildcard Pattern Matching | CODEFORCES |
import java.io.*;
import java.util.Arrays;
import java.util.StringJoiner;
import java.util.StringTokenizer;
import java.util.function.Function;
public class Main {
static String S;
public static void main(String[] args) {
FastScanner sc = new FastScanner(System.in);
S = sc.next();
System.out.println(solve());
}
static int solve() {
int ans = -1;
int time = 1;
int n = S.length();
for (int i = 1; i < n*2; i++) {
if( S.charAt((i-1)%n) != S.charAt(i%n) ) {
time++;
} else {
ans = Math.max(time, ans);
time = 1;
}
}
ans = Math.max(time, ans);
if( ans == n*2 ) {
return n;
} else {
return ans;
}
}
@SuppressWarnings("unused")
static class FastScanner {
private BufferedReader reader;
private StringTokenizer tokenizer;
FastScanner(InputStream in) {
reader = new BufferedReader(new InputStreamReader(in));
tokenizer = null;
}
String next() {
if (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
tokenizer = new StringTokenizer(reader.readLine());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken();
}
String nextLine() {
if (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
return reader.readLine();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken("\n");
}
long nextLong() {
return Long.parseLong(next());
}
int nextInt() {
return Integer.parseInt(next());
}
int[] nextIntArray(int n) {
int[] a = new int[n];
for (int i = 0; i < n; i++)
a[i] = nextInt();
return a;
}
int[] nextIntArray(int n, int delta) {
int[] a = new int[n];
for (int i = 0; i < n; i++)
a[i] = nextInt() + delta;
return a;
}
long[] nextLongArray(int n) {
long[] a = new long[n];
for (int i = 0; i < n; i++)
a[i] = nextLong();
return a;
}
}
static <A> void writeLines(A[] as, Function<A, String> f) {
PrintWriter pw = new PrintWriter(System.out);
for (A a : as) {
pw.println(f.apply(a));
}
pw.flush();
}
static void writeLines(int[] as) {
PrintWriter pw = new PrintWriter(System.out);
for (int a : as) pw.println(a);
pw.flush();
}
static void writeLines(long[] as) {
PrintWriter pw = new PrintWriter(System.out);
for (long a : as) pw.println(a);
pw.flush();
}
static int max(int... as) {
int max = Integer.MIN_VALUE;
for (int a : as) max = Math.max(a, max);
return max;
}
static int min(int... as) {
int min = Integer.MAX_VALUE;
for (int a : as) min = Math.min(a, min);
return min;
}
static void debug(Object... args) {
StringJoiner j = new StringJoiner(" ");
for (Object arg : args) {
if (arg instanceof int[]) j.add(Arrays.toString((int[]) arg));
else if (arg instanceof long[]) j.add(Arrays.toString((long[]) arg));
else if (arg instanceof double[]) j.add(Arrays.toString((double[]) arg));
else if (arg instanceof Object[]) j.add(Arrays.toString((Object[]) arg));
else j.add(arg.toString());
}
System.err.println(j.toString());
}
}
| linear | 1025_C. Plasticine zebra | CODEFORCES |
import java.util.*;
public class Main{
public static void main(String args[]){
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
int a[]=new int[n];
for(int i=0;i<n;i++)
a[i]=sc.nextInt();
Arrays.sort(a);
//boolean
int t=1,c=0;
for(int i=1;i<n;i++){
if(a[i]==a[i-1])
{
if(i-2>=0&&a[i-2]==a[i-1]-1){
System.out.println("cslnb");
return;
}
c++;
}
if(a[i]==a[i-1]&&a[i]==0){
System.out.println("cslnb");
return;
}
}
if(c>1)
{
System.out.println("cslnb");
return;
}
for(int i=0;i<n;i++){
if((a[i]-i)%2!=0)
t=t^1;
}
if(t==1)
System.out.println("cslnb");
else
System.out.println("sjfnb");
}
} | linear | 1190_B. Tokitsukaze, CSL and Stone Game | CODEFORCES |
import java.util.*;
public class helloWorld
{
public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int m = in.nextInt();
int[] ar = new int[200];
String str = in.next();
for(int i = 0; i < str.length(); i++)
ar[ str.charAt(i) ]++;
int ans = 100000;
for(int i = 'A'; i < 'A' + m; i++)
ans = Math.min(ans, ar[i]);
ans *= m;
System.out.println(ans);
in.close();
}
}
| linear | 1038_A. Equality | CODEFORCES |
import java.util.Scanner;
import javafx.geometry.Point2D;
public class ChessKing {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
long size = input.nextLong();
long a = input.nextLong();
long b = input.nextLong();
long sum = a+b;
long d = sum-2;
long d1 = size*2 - sum;
if(d<d1) System.out.println("White");
else if(d>d1) System.out.println("Black");
else System.out.println("White");
}
}
| constant | 1075_A. The King's Race | CODEFORCES |
import java.io.*;
import java.util.*;
import java.text.*;
import java.lang.*;
import java.math.*;
public class Main{
static ArrayList a[]=new ArrayList[200001];
static int Count(int a[][],int n) {
dsu d=new dsu(n);
for(int i=0;i<n;i++) {
for(int j=0;j<n;j++) {
if(a[i][j]==0) {
d.union(i, j);
}
}
}
int cnt=0;
boolean chk[]=new boolean [n];
for(int i=0;i<n;i++) {
int p=d.root(i);
if(!chk[p]) {
chk[p]=true;
cnt++;
}
}
return cnt;
}
public void solve () {
InputReader in = new InputReader(System.in);
PrintWriter pw = new PrintWriter(System.out);
int n=in.nextInt();
int a=in.nextInt();
int b=in.nextInt();
if(a==1 || b==1) {
int ans[][]=new int [n][n];
int temp=(a==1)?b:a;
for(int i=1;i<=n-temp;i++) {
ans[i][i-1]=1;
ans[i-1][i]=1;
}
int freq=Count(ans,n);
if(freq!=1) {
pw.println("NO");
}
else {
pw.println("YES");
for(int i=0;i<n;i++) {
for(int j=0;j<n;j++) {
if(i==j) {
pw.print(0);
}
else
pw.print((ans[i][j]+((temp==b)?1:0))%2);
}
pw.println();
}
}
}
else {
pw.print("NO");
}
pw.flush();
pw.close();
}
public static void main(String[] args) throws Exception {
new Thread(null,new Runnable() {
public void run() {
new Main().solve();
}
},"1",1<<26).start();
}
static void debug(Object... o) {
System.out.println(Arrays.deepToString(o));
}
static class InputReader
{
private final InputStream stream;
private final byte[] buf = new byte[8192];
private int curChar, snumChars;
private SpaceCharFilter filter;
public InputReader(InputStream stream)
{
this.stream = stream;
}
public int snext()
{
if (snumChars == -1)
throw new InputMismatchException();
if (curChar >= snumChars)
{
curChar = 0;
try
{
snumChars = stream.read(buf);
}
catch (IOException e)
{
throw new InputMismatchException();
}
if (snumChars <= 0)
return -1;
}
return buf[curChar++];
}
public int nextInt()
{
int c = snext();
while (isSpaceChar(c))
{
c = snext();
}
int sgn = 1;
if (c == '-')
{
sgn = -1;
c = snext();
}
int res = 0;
do
{
if (c < '0' || c > '9')
throw new InputMismatchException();
res *= 10;
res += c - '0';
c = snext();
} while (!isSpaceChar(c));
return res * sgn;
}
public long nextLong()
{
int c = snext();
while (isSpaceChar(c))
{
c = snext();
}
int sgn = 1;
if (c == '-')
{
sgn = -1;
c = snext();
}
long res = 0;
do
{
if (c < '0' || c > '9')
throw new InputMismatchException();
res *= 10;
res += c - '0';
c = snext();
} while (!isSpaceChar(c));
return res * sgn;
}
public int[] nextIntArray(int n)
{
int a[] = new int[n];
for (int i = 0; i < n; i++)
{
a[i] = nextInt();
}
return a;
}
public String readString()
{
int c = snext();
while (isSpaceChar(c))
{
c = snext();
}
StringBuilder res = new StringBuilder();
do
{
res.appendCodePoint(c);
c = snext();
} while (!isSpaceChar(c));
return res.toString();
}
public String nextLine()
{
int c = snext();
while (isSpaceChar(c))
c = snext();
StringBuilder res = new StringBuilder();
do
{
res.appendCodePoint(c);
c = snext();
} while (!isEndOfLine(c));
return res.toString();
}
public boolean isSpaceChar(int c)
{
if (filter != null)
return filter.isSpaceChar(c);
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
private boolean isEndOfLine(int c)
{
return c == '\n' || c == '\r' || c == -1;
}
public interface SpaceCharFilter
{
public boolean isSpaceChar(int ch);
}
}
public static long mod = 1000000007;
public static int d;
public static int p;
public static int q;
public void extended(int a,int b) {
if(b==0) {
d=a;
p=1;
q=0;
}
else
{
extended(b,a%b);
int temp=p;
p=q;
q=temp-(a/b)*q;
}
}
public static long[] shuffle(long[] a,Random gen)
{
int n = a.length;
for(int i=0;i<n;i++)
{
int ind = gen.nextInt(n-i)+i;
long temp = a[ind];
a[ind] = a[i];
a[i] = temp;
}
return a;
}
public static void swap(int a, int b){
int temp = a;
a = b;
b = temp;
}
public static HashSet<Integer> primeFactorization(int n)
{
HashSet<Integer> a =new HashSet<Integer>();
for(int i=2;i*i<=n;i++)
{
while(n%i==0)
{
a.add(i);
n/=i;
}
}
if(n!=1)
a.add(n);
return a;
}
public static void sieve(boolean[] isPrime,int n)
{
for(int i=1;i<n;i++)
isPrime[i] = true;
isPrime[0] = false;
isPrime[1] = false;
for(int i=2;i*i<n;i++)
{
if(isPrime[i] == true)
{
for(int j=(2*i);j<n;j+=i)
isPrime[j] = false;
}
}
}
public static int GCD(int a,int b)
{
if(b==0)
return a;
else
return GCD(b,a%b);
}
static class pair implements Comparable<pair>
{
Integer x;
Long y;
pair(int x,long y)
{
this.x=x;
this.y=y;
}
public int compareTo(pair o) {
int result = x.compareTo(o.x);
if(result==0)
result = y.compareTo(o.y);
return result;
}
public String toString()
{
return x+" "+y;
}
public boolean equals(Object o)
{
if (o instanceof pair)
{
pair p = (pair)o;
return p.x == x && p.y == y ;
}
return false;
}
public int hashCode()
{
return new Long(x).hashCode()*31 + new Long(y).hashCode();
}
}
}
class pair implements Comparable<pair>
{
Integer x;
Long y;
pair(int x,long y)
{
this.x=x;
this.y=y;
}
public int compareTo(pair o) {
int result = x.compareTo(o.x);
if(result==0)
result = y.compareTo(o.y);
return result;
}
public String toString()
{
return x+" "+y;
}
public boolean equals(Object o)
{
if (o instanceof pair)
{
pair p = (pair)o;
return p.x == x && p.y == y ;
}
return false;
}
public int hashCode()
{
return new Long(x).hashCode()*31 + new Long(y).hashCode();
}
}
class dsu{
int parent[];
dsu(int n){
parent=new int[n+1];
for(int i=0;i<=n;i++)
{
parent[i]=i;
}
}
int root(int n) {
while(parent[n]!=n)
{
parent[n]=parent[parent[n]];
n=parent[n];
}
return n;
}
void union(int _a,int _b) {
int p_a=root(_a);
int p_b=root(_b);
parent[p_a]=p_b;
}
boolean find(int a,int b) {
if(root(a)==root(b))
return true;
else
return false;
}
}
| quadratic | 990_D. Graph And Its Complement | CODEFORCES |
import java.util.*;
import java.io.*;
public class A
{
public static void main(String ar[]) throws Exception
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String s1[]=br.readLine().split(" ");
int n=Integer.parseInt(s1[0]);
long x=Long.parseLong(s1[1]);
long y=Long.parseLong(s1[2]);
long S=0;
long mod=1000000007;
B a[]=new B[n];
TreeMap<Long,Long> tm=new TreeMap<Long,Long>();
long ans[]=new long[n];
for(int i=0;i<n;i++)
{
String s2[]=br.readLine().split(" ");
long l=Long.parseLong(s2[0]);
long r=Long.parseLong(s2[1]);
B b1=new B(l,r);
a[i]=b1;
}
Arrays.sort(a,new The_Comp());
for(int i=0;i<n;i++)
{
long l=a[i].x;
long r=a[i].y;
if(tm.floorKey(l-1)!=null)
{
long u=tm.floorKey(l-1);
long v=l;
if((v-u)*y<x)
{ ans[i]=((r-u)*y)%mod;
if(tm.get(u)>1)
tm.put(u,tm.get(u)-1);
else
tm.remove(u);
}
else
{ ans[i]=(x+(r-l)*y)%mod; }
}
else
ans[i]=(x+(r-l)*y)%mod;
S=(S+ans[i])%mod;
if(tm.containsKey(r))
tm.put(r,1+tm.get(r));
else
tm.put(r,(long)1);
}
System.out.println(S);
}
}
class The_Comp implements Comparator<B>
{
public int compare(B b1,B b2)
{
if(b1.x>b2.x)
return 1;
else if(b1.x==b2.x)
{
if(b1.y>b2.y)
return 1;
else if(b1.y==b2.y)
return 0;
else
return -1;
}
else
return -1;
}
}
class B
{
long x=(long)1;
long y=(long)1;
public B(long l1,long l2)
{ x=l1; y=l2; }
} | nlogn | 1061_D. TV Shows | CODEFORCES |
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;
public class e {
public static class FastReader {
BufferedReader br;
StringTokenizer st;
//it reads the data about the specified point and divide the data about it ,it is quite fast
//than using direct
public FastReader() {
br = new BufferedReader(new InputStreamReader(System.in));
}
String next() {
while (st == null || !st.hasMoreTokens()) {
try {
st = new StringTokenizer(br.readLine());
} catch (Exception r) {
r.printStackTrace();
}
}
return st.nextToken();
}
int nextInt() {
return Integer.parseInt(next());//converts string to integer
}
double nextDouble() {
return Double.parseDouble(next());
}
long nextLong() {
return Long.parseLong(next());
}
String nextLine() {
String str = "";
try {
str = br.readLine();
} catch (Exception r) {
r.printStackTrace();
}
return str;
}
}
static ArrayList<String>list1=new ArrayList<String>();
static void combine(String instr, StringBuffer outstr, int index,int k)
{
if(outstr.length()==k)
{
list1.add(outstr.toString());return;
}
if(outstr.toString().length()==0)
outstr.append(instr.charAt(index));
for (int i = 0; i < instr.length(); i++)
{
outstr.append(instr.charAt(i));
combine(instr, outstr, i + 1,k);
outstr.deleteCharAt(outstr.length() - 1);
}
index++;
}
static ArrayList<ArrayList<Integer>>l=new ArrayList<>();
static void comb(int n,int k,int ind,ArrayList<Integer>list)
{
if(k==0)
{
l.add(new ArrayList<>(list));
return;
}
for(int i=ind;i<=n;i++)
{
list.add(i);
comb(n,k-1,ind+1,list);
list.remove(list.size()-1);
}
}
public static PrintWriter out = new PrintWriter (new BufferedOutputStream(System.out));
public static void main(String[] args) {
// TODO Auto-generated method stub
FastReader in=new FastReader();
HashMap<Integer,Integer>map=new HashMap<Integer,Integer>();
int n=in.nextInt();
int r=in.nextInt();
double theta=(double)360/(double)n;
double b=1-((double)2/(double)(1-Math.cos((double)2*Math.PI/(double)n)));
double x=Math.sqrt(1-b)-1;
double ans=(double)r/(double)x;
System.out.println(ans);
}
}
| constant | 1100_C. NN and the Optical Illusion | CODEFORCES |
import java.util.*;
public class D5 {
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
int a = input.nextInt(), v = input.nextInt();
int l = input.nextInt(), d = input.nextInt(), w = input.nextInt();
double lo = 0, hi = v;
for(int iter = 0; iter < 1000; iter++)
{
double mid = (lo+hi)/2;
if(can(mid, a, d, w)) lo = mid;
else hi = mid;
}
//System.out.println(lo);
double t1 = lo / a;
double gone = .5 * t1 * t1 * a;
if(lo > w)
{
gone += -a * .5 * (lo - w) / a * (lo - w) / a + lo * (lo - w) / a;
t1 += (lo - w) / a;
}
t1 += (d - gone) / lo;
//System.out.println(t1);
double v0 = Math.min(lo, w);
double togo = l - d;
double toAdd = (-v0 + Math.sqrt(v0 * v0 + 4 * togo * .5 * a)) / a;
if(toAdd * a + v0 > v)
{
double tt = (v - v0) / a;
t1 += tt;
togo -= .5 * a * tt * tt + v0 * tt;
t1 += togo / v;
}
else t1 += toAdd;
System.out.println(t1);
}
static boolean can(double v, double a, double d, double max)
{
double t1 = v / a;
double distGone = .5 * a * t1 * t1;
if(v > max)
{
t1 = (v - max) / a;
distGone += -.5 * a * t1 * t1 + v * t1;
}
return distGone <= d;
}
}
| constant | 5_D. Follow Traffic Rules | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
public class D909 {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
char[] line = br.readLine().toCharArray();
int n = line.length;
int l = 0;
ArrayList<Node> groups = new ArrayList<>();
Node node = new Node(line[0], 1);
groups.add(node);
for (int i = 1; i < n; i++) {
if (line[i] == groups.get(l).letter) {
groups.get(l).count++;
} else {
node = new Node(line[i], 1);
groups.add(node);
l++;
}
}
int moves = 0;
ArrayList<Node> temp = new ArrayList<>();
while (groups.size() > 1) {
moves++;
l = groups.size();
groups.get(0).count--;
groups.get(l - 1).count--;
for (int i = 1; i < l - 1; i++) {
groups.get(i).count -= 2;
}
int p;
for (p = 0; p < l; p++) {
if (groups.get(p).count > 0) {
temp.add(groups.get(p));
break;
}
}
int lTemp = temp.size();
for (p++; p < l; p++) {
if (groups.get(p).count <= 0) {
continue;
}
if (groups.get(p).letter == temp.get(lTemp - 1).letter) {
temp.get(lTemp - 1).count += groups.get(p).count;
} else {
temp.add(groups.get(p));
lTemp++;
}
}
groups.clear();
groups.addAll(temp);
temp.clear();
}
System.out.println(moves);
}
private static class Node {
char letter;
int count;
Node(char letter, int count) {
this.letter = letter;
this.count = count;
}
}
}
| linear | 909_D. Colorful Points | CODEFORCES |
import java.util.*;
import java.io.*;
public class X
{
public static void main(String args[])throws IOException
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(br.readLine());
String s1 = br.readLine();
String s2 = br.readLine();
int i=0;
char c1,c2;
int cost = 0;
while(i<n)
{
c1 = s1.charAt(i);
c2 = s2.charAt(i);
if(c1 != c2)
{
if((i+1)<n && s1.charAt(i+1) != s2.charAt(i+1) && s1.charAt(i) != s1.charAt(i+1))
{
cost +=1;
i++;
}
else
{
cost +=1;
}
}
i++;
}
System.out.println(cost);
}
} | linear | 1037_C. Equalize | CODEFORCES |
import java.util.Scanner;
public class ChainReaction {
public static void main(String [] args) {
Scanner kb = new Scanner(System.in);
int num = kb.nextInt();
int[] beacons = new int[1000002];
for (int i=0; i<num; i++) {
beacons[kb.nextInt()] = kb.nextInt();
}
int [] dp = new int[1000002];
int max = 0;
if (beacons[0] != 0)
dp[0] = 1;
for (int i=1; i<dp.length; i++) {
if (beacons[i] == 0) {
dp[i] = dp[i-1];
} else {
int index = i-1-beacons[i];
if (index<0)
dp[i] = 1;
else
dp[i] = 1 + dp[index];
}
max = Math.max(max, dp[i]);
//if (i<11)
//System.out.println(i +" is "+dp[i]);
}
System.out.println(num-max);
}
}
| linear | 608_C. Chain Reaction | CODEFORCES |
import java.util.*;
import java.io.*;
public class A{
public static void main(String args[]){
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int ans = 0;
for(int i = 1; i <= n; i++){
ans += ((i*2) <= n) ? i : n-i+1;
}
System.out.println(ans);
}
} | linear | 909_B. Segments | CODEFORCES |
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Objects;
import java.util.Stack;
import java.util.StringTokenizer;
public class Test
{
static PrintWriter pw = new PrintWriter(System.out);
public static void main(String[] args)throws Exception
{
Reader.init(System.in);
int n = Reader.nextInt();
int p = Reader.nextInt();
int L = Reader.nextInt();
int R = Reader.nextInt();
int a = 1;
int b = n;
int res = 0;
if(a == L && b == R)
{
res = 0;
}
else if(L != a && R != b && p >= L && p <= R)
{
res = Math.min(p-L, R-p);
res += R- L + 2;
}
else if(L != a && R != b && p < L )
{
res += L-p + 1;
res += R - L +1;
}
else if(L != a && R != b && p > R)
{
res += p-R + 1;
res += R - L +1;
}
else if(a == L && p >=L && p<=R)
{
res += R - p + 1;
}
else if(R == b && p>=L && p<=R)
{
res += p - L + 1;
}
else if(a == L && p > R)
{
res += p - R + 1;
}
else if(R == b && p<L)
{
res += L - p + 1;
}
pw.print(res);
pw.close();
}
}
class Reader {
static BufferedReader reader;
static StringTokenizer tokenizer;
public static int pars(String x) {
int num = 0;
int i = 0;
if (x.charAt(0) == '-') {
i = 1;
}
for (; i < x.length(); i++) {
num = num * 10 + (x.charAt(i) - '0');
}
if (x.charAt(0) == '-') {
return -num;
}
return num;
}
static void init(InputStream input) {
reader = new BufferedReader(
new InputStreamReader(input));
tokenizer = new StringTokenizer("");
}
static void init(FileReader input) {
reader = new BufferedReader(input);
tokenizer = new StringTokenizer("");
}
static String next() throws IOException {
while (!tokenizer.hasMoreTokens()) {
tokenizer = new StringTokenizer(
reader.readLine());
}
return tokenizer.nextToken();
}
static int nextInt() throws IOException {
return pars(next());
}
static long nextLong() throws IOException {
return Long.parseLong(next());
}
static double nextDouble() throws IOException {
return Double.parseDouble(next());
}
} | constant | 915_B. Browser | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
InputReader in = new InputReader(inputStream);
PrintWriter out = new PrintWriter(outputStream);
TaskG solver = new TaskG();
solver.solve(1, in, out);
out.close();
}
static class TaskG {
static final long MODULO = (long) 1e9 + 7;
static final long BIG = Long.MAX_VALUE - Long.MAX_VALUE % MODULO;
static final int[] ONE = new int[]{1};
int k;
int n;
long[] globalRes;
int[] p2;
public void solve(int testNumber, InputReader in, PrintWriter out) {
n = in.nextInt();
k = in.nextInt();
globalRes = new long[k + 1];
p2 = new int[n + 1];
p2[0] = 1;
for (int i = 1; i <= n; ++i) p2[i] = (int) (2 * p2[i - 1] % MODULO);
Vertex[] vs = new Vertex[n];
for (int i = 0; i < n; ++i) vs[i] = new Vertex();
for (int i = 0; i < n - 1; ++i) {
Vertex a = vs[in.nextInt() - 1];
Vertex b = vs[in.nextInt() - 1];
a.adj.add(b);
b.adj.add(a);
}
vs[0].dfs(null);
long[][] ways = new long[k + 1][k + 1];
ways[0][0] = 1;
for (int i = 1; i <= k; ++i) {
for (int j = 1; j <= k; ++j) {
ways[i][j] = j * (ways[i - 1][j] + ways[i - 1][j - 1]) % MODULO;
}
}
long sum = 0;
for (int i = 1; i <= k; ++i) {
long s = globalRes[i];
s %= MODULO;
sum = (sum + s * ways[k][i]) % MODULO;
}
out.println(sum);
}
class Vertex {
int[] res;
int subtreeSize;
List<Vertex> adj = new ArrayList<>();
public void dfs(Vertex parent) {
subtreeSize = 1;
int[] prod = ONE;
for (Vertex child : adj)
if (child != parent) {
child.dfs(this);
subtreeSize += child.subtreeSize;
}
int mult = 2;//p2[n - subtreeSize];
for (Vertex child : adj)
if (child != parent) {
int[] c = child.res;
prod = mul(prod, c);
subFrom(globalRes, c, 1);
}
addTo(globalRes, prod, mult);
res = insertEdge(prod);
}
private int[] insertEdge(int[] a) {
int len = a.length + 1;
if (len > k) len = k + 1;
int[] b = new int[len];
b[0] = a[0] * 2;
if (b[0] >= MODULO) b[0] -= MODULO;
for (int i = 1; i < len; ++i) {
long s = a[i - 1];
if (i < a.length) s += a[i];
if (s >= MODULO) s -= MODULO;
s = s * 2;
if (s >= MODULO) s -= MODULO;
b[i] = (int) s;
}
b[1] -= 1;
if (b[1] < 0) b[1] += MODULO;
return b;
}
private void addTo(long[] a, int[] b, int mult) {
for (int i = 0; i < b.length; ++i) {
long s = a[i] + b[i] * (long) mult;
if (s < 0) s -= BIG;
a[i] = s;
}
}
private void subFrom(long[] a, int[] b, int mult) {
for (int i = 0; i < b.length; ++i) {
long s = a[i] + (MODULO - b[i]) * (long) mult;
if (s < 0) s -= BIG;
a[i] = s;
}
}
private int[] mul(int[] a, int[] b) {
int len = a.length + b.length - 1;
if (len > k) len = k + 1;
int[] c = new int[len];
for (int i = 0; i < len; ++i) {
long s = 0;
int left = Math.max(0, i - (b.length - 1));
int right = Math.min(a.length - 1, i);
for (int ia = left; ia <= right; ++ia) {
int ib = i - ia;
s += a[ia] * (long) b[ib];
if (s < 0) s -= BIG;
}
c[i] = (int) (s % MODULO);
}
return c;
}
}
}
static class InputReader {
public BufferedReader reader;
public StringTokenizer tokenizer;
public InputReader(InputStream stream) {
reader = new BufferedReader(new InputStreamReader(stream), 32768);
tokenizer = null;
}
public String next() {
while (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
tokenizer = new StringTokenizer(reader.readLine());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken();
}
public int nextInt() {
return Integer.parseInt(next());
}
}
}
| quadratic | 1097_G. Vladislav and a Great Legend | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.InputMismatchException;
import java.io.IOException;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*
* @author Pradyumn
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
FastReader in = new FastReader(inputStream);
PrintWriter out = new PrintWriter(outputStream);
TaskB solver = new TaskB();
solver.solve(1, in, out);
out.close();
}
static class TaskB {
FastReader in;
PrintWriter out;
int n;
public void solve(int testNumber, FastReader in, PrintWriter out) {
this.in = in;
this.out = out;
n = in.nextInt();
if (n % 4 != 0) {
out.println("! -1");
return;
}
int low = 0;
int high = n >> 1;
if (BValue(low) == 0) {
out.println("! " + (low + 1));
return;
}
boolean value = BValue(low) > 0;
while (high - low > 1) {
int mid = (high + low) >> 1;
int BVal = BValue(mid);
if (BVal == 0) {
out.println("! " + (mid + 1));
return;
}
if (value) {
if (BVal < 0) {
high = mid;
} else {
low = mid;
}
} else {
if (BVal > 0) {
high = mid;
} else {
low = mid;
}
}
}
out.println("! -1");
}
public int BValue(int index) {
out.println("? " + (index + 1));
out.flush();
int f = in.nextInt();
out.println("? " + (index + 1 + (n >> 1)));
out.flush();
int s = in.nextInt();
return f - s;
}
}
static class FastReader {
private InputStream stream;
private byte[] buf = new byte[8192];
private int curChar;
private int pnumChars;
public FastReader(InputStream stream) {
this.stream = stream;
}
private int pread() {
if (pnumChars == -1) {
throw new InputMismatchException();
}
if (curChar >= pnumChars) {
curChar = 0;
try {
pnumChars = stream.read(buf);
} catch (IOException e) {
throw new InputMismatchException();
}
if (pnumChars <= 0) {
return -1;
}
}
return buf[curChar++];
}
public int nextInt() {
int c = pread();
while (isSpaceChar(c))
c = pread();
int sgn = 1;
if (c == '-') {
sgn = -1;
c = pread();
}
int res = 0;
do {
if (c == ',') {
c = pread();
}
if (c < '0' || c > '9') {
throw new InputMismatchException();
}
res *= 10;
res += c - '0';
c = pread();
} while (!isSpaceChar(c));
return res * sgn;
}
private boolean isSpaceChar(int c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
}
}
| logn | 1019_B. The hat | CODEFORCES |
import java.math.BigInteger;
import java.util.Scanner;
public class Main {
static Scanner sc = new Scanner (System.in);
public static void main(String[] args) {
int n = sc.nextInt();
int k = sc.nextInt();
char str[][] = new char[5][n];
for(int i = 0;i < 4;i ++){
for(int j = 0;j < n;j ++)
str[i][j] = '.';
}
if(k % 2 == 0){
k /= 2;
for(int i = 1;i <= 2;i++){
for(int j = 1;j <= k;j++)
str[i][j] = '#';
}
}
else{
str[1][n / 2] = '#';
if(k != 1){
int tmp = n / 2;
if(k <= n - 2){
for(int i = 1;i<= (k - 1) / 2;i++){
str[1][i] = '#';
str[1][n - 1 - i] = '#';
}
}
else{
for(int i = 1;i <= n - 2;i++) str[1][i] = '#';
k -= n - 2;
for(int i = 1;i <= k/2;i++){
str[2][i] = '#';
str[2][n - 1 - i]='#';
}
}
}
}
System.out.println("YES");
for(int i = 0;i < 4;i ++){
System.out.println(str[i]);
}
}
} | linear | 980_B. Marlin | CODEFORCES |
import java.util.Scanner;
public class HammingDistancesSum {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String a = sc.nextLine(), b = sc.nextLine();
long sum = 0;
int frequency[][] = new int[200010][2];
for (int i = 1; i <= b.length(); i++) {
for (int j = 0; j < 2; j++)
frequency[i][j] = frequency[i - 1][j];
frequency[i][Character.getNumericValue((b.charAt(i - 1)))]++;
}
for (int i = 0; i < a.length(); i++) {
int c = Character.getNumericValue(a.charAt(i));
for (int j = 0; j < 2; j++) {
int flippingTerm = Math.abs(c - j);
int endOfWindowValue = frequency[b.length() - a.length() + i + 1][j];
int startOfWindowOffset = frequency[i][j];
sum += flippingTerm * (endOfWindowValue - startOfWindowOffset);
}
}
System.out.println(sum);
sc.close();
}
}
| linear | 608_B. Hamming Distance Sum | CODEFORCES |
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
public class Solution {
public static void main(String[] args) {
Solution solution = new Solution();
System.out.println(solution.solve());
}
private int solve() {
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int m = in.nextInt();
int[] a = new int[m];
for (int i = 0; i < m; ++i) a[i] = in.nextInt();
if (n > m) return 0;
Map<Integer, Integer> map = new HashMap<>();
for (int k: a) map.put(k, map.getOrDefault(k, 0) + 1);
List<Integer> keySet = new ArrayList<>(map.keySet());
int end = m / n;
keySet.sort((u, v) -> -Integer.compare(u, v));
do {
int count = 0;
for (int k: keySet) {
count += map.get(k) / end;
if (count >= n) return end;
}
} while (--end > 0);
return 0;
}
}
| nlogn | 1011_B. Planning The Expedition | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.InputMismatchException;
import java.io.IOException;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*
* @author Pradyumn
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
FastReader in = new FastReader(inputStream);
PrintWriter out = new PrintWriter(outputStream);
TaskB solver = new TaskB();
solver.solve(1, in, out);
out.close();
}
static class TaskB {
FastReader in;
PrintWriter out;
int n;
public void solve(int testNumber, FastReader in, PrintWriter out) {
this.in = in;
this.out = out;
n = in.nextInt();
if (n % 4 != 0) {
out.println("! -1");
return;
}
int low = 0;
int high = n >> 1;
if (BValue(low) == 0) {
out.println("! " + (low + 1));
return;
}
int fSign = Integer.signum(BValue(low));
while (high - low > 1) {
int mid = (high + low) >> 1;
int mSign = Integer.signum(BValue(mid));
if (mSign == 0) {
out.println("! " + (mid + 1));
return;
}
if (mSign == -fSign) {
high = mid;
} else {
low = mid;
}
}
out.println("! -1");
}
public int BValue(int index) {
out.println("? " + (index + 1));
out.flush();
int f = in.nextInt();
out.println("? " + (index + 1 + (n >> 1)));
out.flush();
int s = in.nextInt();
return f - s;
}
}
static class FastReader {
private InputStream stream;
private byte[] buf = new byte[8192];
private int curChar;
private int pnumChars;
public FastReader(InputStream stream) {
this.stream = stream;
}
private int pread() {
if (pnumChars == -1) {
throw new InputMismatchException();
}
if (curChar >= pnumChars) {
curChar = 0;
try {
pnumChars = stream.read(buf);
} catch (IOException e) {
throw new InputMismatchException();
}
if (pnumChars <= 0) {
return -1;
}
}
return buf[curChar++];
}
public int nextInt() {
int c = pread();
while (isSpaceChar(c))
c = pread();
int sgn = 1;
if (c == '-') {
sgn = -1;
c = pread();
}
int res = 0;
do {
if (c == ',') {
c = pread();
}
if (c < '0' || c > '9') {
throw new InputMismatchException();
}
res *= 10;
res += c - '0';
c = pread();
} while (!isSpaceChar(c));
return res * sgn;
}
private boolean isSpaceChar(int c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
}
}
| logn | 1019_B. The hat | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.StringTokenizer;
public class B {
static ArrayList<Integer> [] adj;
static int [] num;
static int dfs(int u, int p){
int cnt = 0;
for(int v:adj[u]){
if(v != p)
cnt += dfs(v, u);
}
if(adj[u].size() == 1 && u != 0 || u == 0 && adj[0].size() == 0)
cnt++;
num[cnt]++;
return cnt;
}
public static void main(String[] args) throws NumberFormatException, IOException {
Scanner sc = new Scanner();
PrintWriter out = new PrintWriter(System.out);
int n = sc.nextInt();
adj = new ArrayList[n];
for (int i = 0; i < adj.length; ++i) {
adj[i] = new ArrayList<>();
}
for (int i = 1; i < n; ++i) {
int p = sc.nextInt()-1;
adj[p].add(i);
adj[i].add(p);
}
num = new int[n+1];
dfs(0, -1);
for (int i = 1; i < num.length; ++i) {
num[i] += num[i-1];
}
int cur = 1;
for (int i = 0; i < num.length; ++i) {
while(cur <= num[i]){
out.print(i + " ");
++cur;
}
}
out.close();
}
static class Scanner {
BufferedReader br;
StringTokenizer st;
public Scanner() {
br = new BufferedReader(new InputStreamReader(System.in));
}
public String next() throws IOException {
while (st == null || !st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
public int nextInt() throws NumberFormatException, IOException {
return Integer.parseInt(next());
}
}
}
| linear | 1056_D. Decorate Apple Tree | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;
public class CoveredPointsCount {
//UPSOLVE
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer(br.readLine());
int n = Integer.parseInt(st.nextToken());
long[] myArray = new long[2 * n];
for (int i = 0; i < n; i++) {
StringTokenizer st1 = new StringTokenizer(br.readLine());
myArray[2 * i] = Long.parseLong(st1.nextToken()) * 2;
myArray[2 * i + 1] = Long.parseLong(st1.nextToken()) * 2 + 1;
}
Arrays.sort(myArray);
long[] ans = new long[n + 1];
int cnt = 0;
for (int i = 0; i < 2 * n - 1; i++) {
if (myArray[i] % 2 == 0) cnt++; else cnt--;
ans[cnt] += (myArray[i + 1] + 1) / 2 - (myArray[i] + 1) / 2;
}
StringBuilder answer = new StringBuilder();
for (int i = 1; i < n + 1; i++) {
answer.append(ans[i]);
answer.append(" ");
}
System.out.println(answer);
}
}
| nlogn | 1000_C. Covered Points Count | CODEFORCES |
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int n = scanner.nextInt();
int[] P = new int[n];
int[] check=new int[n];
for (int i = 1; i < n; i++) {
P[i] = scanner.nextInt();
P[i]--;
check[P[i]]++;
}
int[] leaves = new int[n];
for (int i=0;i<n;i++) {
if(check[i]==0){
leaves[P[i]]++;
}
}
for (int i = 0; i < n; i++) {
if (check[i]>0&&leaves[i]<3) {
System.out.println("No");
return;
}
}
System.out.println("Yes");
}
}
| linear | 913_B. Christmas Spruce | CODEFORCES |
import java .util.*;
import java .io.*;
public class Main{
public static void main(String[]YAHIA_MOSTAFA){
Scanner sc =new Scanner(System.in);
long n=sc.nextLong(),x=sc.nextLong(),y=sc.nextLong();
long xb,xw,yb,yw;
xw=x-1;yw=y-1;xb=n-x;yb=n-y;
if (x==n&&y==n){
System.out.println("Black");return;
}
long c1=0,c2=0;
long f =Math.max(xb,yb);
long h =Math.max(xw,yw);
//System.out.println(h+" "+f+" "+(h-f));
if (h<=f)
System.out.println("White");
else
System.out.println("Black");
}
} | constant | 1075_A. The King's Race | CODEFORCES |
import java.io.*;
import java.util.*;
public class Main {
static final int MAXN= 1005;
static final long MOD =1_000_000_007;
static final boolean DEBUG= false;
static int n, m;
static long stlr[][]= new long[MAXN][MAXN],bell[]= new long[MAXN],occ[];
static PrintStream cerr=System.err;
public static void main(String[] args) {
// TODO Auto-generated method stub
Readin();
stlr[0][0]= bell[0] =1;
for (int i=1; i<=m; i++)
for (int j=1;j<=i;j++) {
stlr[i][j]= (stlr[i-1][j-1]+stlr[i-1][j]*(long)j)%MOD;
bell[i]= (bell[i]+stlr[i][j])%MOD;
}
if (DEBUG)
for (int i=1; i<=m; i++) cerr.println("Bell["+i+"] ="+bell[i]);
Arrays.sort(occ);
if (DEBUG) {
cerr.println("After Sorting");
for (int i=0;i<m; i++) cerr.println(occ[i]+" ");}
long ans=1;
for (int i=0,j=0; i<m; i=j) {
for (j=i+1; j<m && occ[i]==occ[j];j++);
ans= (ans*bell[j-i])%MOD;
}
System.out.println(ans);
}
static void Readin() {
Scanner cin;
if ( !DEBUG)cin= new Scanner(System.in);
else {
try {
cin = new Scanner(new File("input.txt"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
if ( DEBUG)cerr.println("Not Fount input.txt");
return ;
}
}
m = cin.nextInt(); n=cin.nextInt();
occ= new long[m];
for (int i=0; i<n; i++) {
String s= cin.next();
for (int j=0;j <m; j++)
occ[j]|=((long)(s.charAt(j)-'0'))<<i;
}
cin.close();
}
}
| quadratic | 908_E. New Year and Entity Enumeration | CODEFORCES |
import java.io.BufferedReader;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
public class EhabAndAnotherAnotherXorProblem implements Closeable {
private InputReader in = new InputReader(System.in);
private PrintWriter out = new PrintWriter(System.out);
public void solve() {
int initial = ask(0, 0);
int a = 0, b = 0;
if (initial == 0) {
for (int i = 0; i < 30; i++) {
int response = ask(1 << i, 0);
if (response == -1) {
a |= (1 << i);
}
}
b = a;
} else {
for (int i = 29; i >= 0; i--) {
int response = ask(a | (1 << i), b | (1 << i));
if (response != initial) {
if (response == 1) {
b |= (1 << i);
} else {
a |= (1 << i);
}
initial = ask(a, b);
} else {
response = ask(a | (1 << i), b);
if (response == -1) {
a |= (1 << i);
b |= (1 << i);
}
}
}
}
answer(a, b);
}
private int ask(int c, int d) {
out.printf("? %d %d\n", c, d);
out.flush();
return in.ni();
}
private void answer(int a, int b) {
out.printf("! %d %d\n", a, b);
out.flush();
}
@Override
public void close() throws IOException {
in.close();
out.close();
}
static class InputReader {
public BufferedReader reader;
public StringTokenizer tokenizer;
public InputReader(InputStream stream) {
reader = new BufferedReader(new InputStreamReader(stream), 32768);
tokenizer = null;
}
public String next() {
while (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
tokenizer = new StringTokenizer(reader.readLine());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken();
}
public int ni() {
return Integer.parseInt(next());
}
public long nl() {
return Long.parseLong(next());
}
public void close() throws IOException {
reader.close();
}
}
public static void main(String[] args) throws IOException {
try (EhabAndAnotherAnotherXorProblem instance = new EhabAndAnotherAnotherXorProblem()) {
instance.solve();
}
}
}
| logn | 1088_D. Ehab and another another xor problem | CODEFORCES |
import java.util.*;
import java.lang.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.*;
public class Main {
public static void main(String[] args) throws Exception{
FastReader sc=new FastReader();
OutputStream outputStream = System.out;
PrintWriter out = new PrintWriter(outputStream);
int n=sc.nextInt();
HashMap<String,Integer> map=new HashMap<String,Integer>();
for(int i=0;i<n;i++) {
map.put(sc.next(), 1);
}
ArrayList<String> list=new ArrayList<String>();
int count=0;
if(!map.containsKey("purple")) {
count++;
list.add("Power");
}
if(!map.containsKey("green")) {
count++;
list.add("Time");
}
if(!map.containsKey("blue")) {
count++;
list.add("Space");
}
if(!map.containsKey("orange")) {
count++;
list.add("Soul");
}
if(!map.containsKey("red")) {
count++;
list.add("Reality");
}
if(!map.containsKey("yellow")) {
count++;
list.add("Mind");
}System.out.println(count);
for(String s:list) {
System.out.println(s);
}
}
}
class FastReader
{
BufferedReader br;
StringTokenizer st;
public FastReader()
{
br = new BufferedReader(new
InputStreamReader(System.in));
}
String next()
{
while (st == null || !st.hasMoreElements())
{
try
{
st = new StringTokenizer(br.readLine());
}
catch (IOException e)
{
e.printStackTrace();
}
}
return st.nextToken();
}
int nextInt()
{
return Integer.parseInt(next());
}
long nextLong()
{
return Long.parseLong(next());
}
double nextDouble()
{
return Double.parseDouble(next());
}
String nextLine()
{
String str = "";
try
{
str = br.readLine();
}
catch (IOException e)
{
e.printStackTrace();
}
return str;
}
} | constant | 987_A. Infinity Gauntlet | CODEFORCES |
import java.util.Scanner;
public class AlexAndARhombus {
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
System.out.println(n*n+(n-1)*(n-1));
sc.close();
}
}
| constant | 1180_A. Alex and a Rhombus | CODEFORCES |
import java.util.*;
import java.io.*;
import java.math.BigInteger;
public class Main
{
static final long mod=(int)1e9+7;
public static void main(String[] args) throws Exception
{
FastReader in=new FastReader();
PrintWriter pw=new PrintWriter(System.out);
int n=in.nextInt();
long ans=0;
for(int i=2;2*i<=n;i++)
{
ans+=i*(n/i-1);
}
ans*=4;
pw.print(ans);
pw.flush();
}
}
class pair
{
int f,s;
}
class FastReader
{
BufferedReader br;
StringTokenizer st;
public FastReader()
{
br=new BufferedReader(new InputStreamReader(System.in));
}
public String next() throws IOException
{
if(st==null || !st.hasMoreElements())
{
st=new StringTokenizer(br.readLine());
}
return st.nextToken();
}
public int nextInt() throws IOException
{
return Integer.parseInt(next());
}
public long nextLong() throws IOException
{
return Long.parseLong(next());
}
} | linear | 1062_D. Fun with Integers | CODEFORCES |
import java.io.*;
import java.util.*;
public class A {
public static void main(String args[]) {
FastScanner scn = new FastScanner();
int n = scn.nextInt();
int s = scn.nextInt();
if (s <= n) {
System.out.println(1);
} else if (s > n) {
if(s%n == 0){
System.out.println(s/n);
} else {
System.out.println(s/n + 1);
}
}
}
public static class FastScanner {
BufferedReader br;
StringTokenizer st;
public FastScanner(String s) {
try {
br = new BufferedReader(new FileReader(s));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public FastScanner() {
br = new BufferedReader(new InputStreamReader(System.in));
}
String nextToken() {
while (st == null || !st.hasMoreElements()) {
try {
st = new StringTokenizer(br.readLine());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return st.nextToken();
}
int nextInt() {
return Integer.parseInt(nextToken());
}
long nextLong() {
return Long.parseLong(nextToken());
}
double nextDouble() {
return Double.parseDouble(nextToken());
}
}
}
| constant | 1061_A. Coins | CODEFORCES |
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;
public class e {
public static class FastReader {
BufferedReader br;
StringTokenizer st;
//it reads the data about the specified point and divide the data about it ,it is quite fast
//than using direct
public FastReader() {
br = new BufferedReader(new InputStreamReader(System.in));
}
String next() {
while (st == null || !st.hasMoreTokens()) {
try {
st = new StringTokenizer(br.readLine());
} catch (Exception r) {
r.printStackTrace();
}
}
return st.nextToken();
}
int nextInt() {
return Integer.parseInt(next());//converts string to integer
}
double nextDouble() {
return Double.parseDouble(next());
}
long nextLong() {
return Long.parseLong(next());
}
String nextLine() {
String str = "";
try {
str = br.readLine();
} catch (Exception r) {
r.printStackTrace();
}
return str;
}
}
static ArrayList<String>list1=new ArrayList<String>();
static void combine(String instr, StringBuffer outstr, int index,int k)
{
if(outstr.length()==k)
{
list1.add(outstr.toString());return;
}
if(outstr.toString().length()==0)
outstr.append(instr.charAt(index));
for (int i = 0; i < instr.length(); i++)
{
outstr.append(instr.charAt(i));
combine(instr, outstr, i + 1,k);
outstr.deleteCharAt(outstr.length() - 1);
}
index++;
}
static ArrayList<ArrayList<Integer>>l=new ArrayList<>();
static void comb(int n,int k,int ind,ArrayList<Integer>list)
{
if(k==0)
{
l.add(new ArrayList<>(list));
return;
}
for(int i=ind;i<=n;i++)
{
list.add(i);
comb(n,k-1,ind+1,list);
list.remove(list.size()-1);
}
}
public static PrintWriter out = new PrintWriter (new BufferedOutputStream(System.out));
public static void main(String[] args) {
// TODO Auto-generated method stub
FastReader in=new FastReader();
HashMap<Integer,Integer>map=new HashMap<Integer,Integer>();
int n=in.nextInt();
int r=in.nextInt();
double theta=(double)360/(double)n;
double b=1-((double)2/(double)(1-Math.cos((double)2*Math.PI/(double)n)));
double x=Math.sqrt(1-b)-1;
double ans=(double)r/(double)x;
System.out.println(ans);
}
}
| constant | 1100_C. NN and the Optical Illusion | CODEFORCES |
import java.io.*;
import java.math.BigInteger;
import java.util.*;
public class A {
static MyScanner sc;
static PrintWriter pw;
public static void main(String[] args) throws Throwable {
sc = new MyScanner();
pw = new PrintWriter(System.out);
n = sc.nextInt();
T = sc.nextLong();
p = new int[n];
l = new int[n];
x = new int[n];
t = new int[n];
adj = new ArrayList[n];
for (int i = 0; i < n; i++)
x[i] = sc.nextInt();
for (int i = 0; i < n; i++)
t[i] = sc.nextInt();
adj[0] = new ArrayList<>();
for (int i = 1; i < n; i++) {
adj[i] = new ArrayList<>();
p[i] = sc.nextInt() - 1;
l[i] = sc.nextInt();
adj[p[i]].add(i);
}
ftCnt = new long[N];
ftSum = new long[N];
ans = new long[n];
dfs(0);
pw.println(ans[0]);
pw.flush();
pw.close();
}
static int n;
static long T;
static int[] p, l, x, t;
static ArrayList<Integer>[] adj;
static long[] ans;
static void dfs(int u) {
update(t[u], x[u], 1L * x[u] * t[u]);
ans[u] = getMaxCnt();
long[] vals = {-1, -1, -1};
for (int v : adj[u]) {
T -= 2 * l[v];
dfs(v);
vals[0] = ans[v];
Arrays.sort(vals);
T += 2 * l[v];
}
if (u != 0) {
if (vals[1] != -1)
ans[u] = Math.max(ans[u], vals[1]);
} else {
if (vals[2] != -1)
ans[u] = Math.max(ans[u], vals[2]);
}
update(t[u], -x[u], -1L * x[u] * t[u]);
}
static int N = (int) 1e6 + 2;
static long[] ftCnt, ftSum;
static void update(int idx, long cnt, long val) {
while (idx < N) {
ftCnt[idx] += cnt;
ftSum[idx] += val;
idx += (idx & -idx);
}
}
static long getSum(int idx) {
long ret = 0;
while (idx > 0) {
ret += ftSum[idx];
idx -= (idx & -idx);
}
return ret;
}
static long getCnt(int idx) {
long ret = 0;
while (idx > 0) {
ret += ftCnt[idx];
idx -= (idx & -idx);
}
return ret;
}
static long getMaxCnt() {
int start = 1, end = N - 1, ans = N - 1;
while (start <= end) {
int mid = (start + end) / 2;
if (getSum(mid) >= T) {
ans = mid;
end = mid - 1;
} else
start = mid + 1;
}
long remT = T - (ans > 1 ? getSum(ans - 1) : 0);
long cnt = (ans > 1 ? getCnt(ans - 1) : 0);
long cntOfVal = getCnt(ans) - cnt;
cnt += Math.min(cntOfVal, remT / ans);
return cnt;
}
static class MyScanner {
BufferedReader br;
StringTokenizer st;
public MyScanner() {
br = new BufferedReader(new InputStreamReader(System.in));
}
String next() {
while (st == null || !st.hasMoreElements()) {
try {
st = new StringTokenizer(br.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
int nextInt() {
return Integer.parseInt(next());
}
long nextLong() {
return Long.parseLong(next());
}
double nextDouble() {
return Double.parseDouble(next());
}
String nextLine() {
String str = "";
try {
str = br.readLine();
} catch (IOException e) {
e.printStackTrace();
}
return str;
}
}
} | nlogn | 1099_F. Cookies | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
public class Code {
public static void main(String[] args) throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(br.readLine());
HashMap<Double,Integer>h = new HashMap<>();
double [] temp = new double[n];
int m = 0;
for(int i=0;i<n;i++) {
String l = br.readLine();
int[] x = new int[4];
int k=0;
boolean t = false;
for(int j=0;j<l.length();j++) {
if(l.charAt(j)=='(' || l.charAt(j)=='+' || l.charAt(j)==')' || l.charAt(j)=='/')
x[k++] = j;
}
double a = Integer.parseInt(l.substring(x[0]+1,x[1]));
double b = Integer.parseInt(l.substring(x[1]+1, x[2]));
double c = Integer.parseInt(l.substring(x[3]+1));
temp[m++] = (a+b)/c;
//System.out.print((a+b)/c + " ");
if(h.containsKey((a+b)/c))
h.put((a+b)/c, h.get((a+b)/c)+1);
else
h.put((a+b)/c, 1);
}
//System.out.println(h);
for(int i=0;i<n;i++) {
System.out.print(h.get(temp[i]) + " ");
}
}
}
| linear | 958_D1. Hyperspace Jump (easy) | CODEFORCES |
import java.util.*;
import java.io.*;
public class programA {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(br.readLine());
if(n%2 == 0)System.out.println(n/2 +1);
else System.out.println((int)Math.ceil((double)n/2));
}
}
| constant | 964_A. Splits | CODEFORCES |
import java.math.BigInteger;
import java.util.Scanner;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Andy Phan
*/
public class p1096f {
static long MOD = 998244353;
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nextInt();
BIT invert = new BIT(n+5);
BIT neg = new BIT(n+5);
long res = 0;
int[] arr = new int[n];
boolean[] has = new boolean[n+1];
long num1 = 0;
for(int i = 0; i < n; i++) {
arr[i] = in.nextInt();
if(arr[i] != -1) {
res += invert.read(n+5)-invert.read(arr[i]);
res %= MOD;
invert.update(arr[i], 1);
has[arr[i]] = true;
} else num1++;
}
if(num1 == 0) {
System.out.println(res);
return;
}
for(int i = 1; i <= n; i++) if(!has[i]) neg.update(i, 1);
long invertNum1 = modInv(num1, MOD);
res += ((num1*(num1-1))%MOD)*modInv(4, MOD);
res %= MOD;
long cnt = 0;
for(int i = 0; i < n; i++) {
if(arr[i] == -1) {
cnt++;
continue;
}
res += (((neg.read(n+5)-neg.read(arr[i]))*cnt)%MOD)*invertNum1;
res %= MOD;
}
cnt = 0;
for(int i = n-1; i >= 0; i--) {
if(arr[i] == -1) {
cnt++;
continue;
}
res += (((neg.read(arr[i]))*cnt)%MOD)*invertNum1;
res %= MOD;
}
System.out.println(res);
}
//@
static class BIT {
int n;
int[] tree;
public BIT(int n) {
this.n = n;
tree = new int[n + 1];
}
int read(int i) {
int sum = 0;
while (i > 0) {
sum += tree[i];
i -= i & -i;
}
return sum;
}
void update(int i, int val) {
while (i <= n) {
tree[i] += val;
i += i & -i;
}
}
//$
}
//@
// Computes the modular inverse of x
// Returns 0 if the GCD of x and mod is not 1
// O(log n) : Can be converted to use BigIntegers
static long modInv(long x, long mod) {
return (BigInteger.valueOf(x).modInverse(BigInteger.valueOf(mod))).longValue();
}
static long modInv(long a, long b, long y0, long y1, long q0, long q1) {
long y2 = y0 - y1*q0;
return b == 0 ? y2 : modInv(b, a % b, y1, y2, q1, a / b);
}
//@
static long gcd(long a, long b) { return b == 0 ? a : gcd(b, a % b); }
static long lcm(long a, long b) { return a / gcd(a, b) * b; }
}
| nlogn | 1096_F. Inversion Expectation | CODEFORCES |
import java.util.*;
import java.io.*;
public class Waw{
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
long[] a = new long[n];
for(int i=0;i<n;i++) a[i] = sc.nextLong();
long[] p = new long[n];
p[n-1] = a[n-1];
for(int i=n-2;i>=0;i--){
if(a[i]<p[i+1]) p[i] = p[i+1]-1;
else p[i] = a[i];
}
long max = p[0];
long res = p[0] - a[0];
for(int i=1;i<n;i++){
if(max < p[i]) max = p[i];
res += max - a[i];
}
System.out.println(res);
}
} | linear | 924_C. Riverside Curio | CODEFORCES |
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Arrays;
import java.util.Comparator;
import java.util.StringTokenizer;
import java.io.InputStream ;
import java.util.InputMismatchException;
import java.util.ArrayList;
public class Main {
public static void main(String[] args) throws IOException {
PrintWriter out = new PrintWriter(System.out);
//Scanner sc = new Scanner();
Reader in = new Reader();
Main solver = new Main();
solver.solve(out, in);
out.flush();
out.close();
}
void solve(PrintWriter out, Reader in) throws IOException{
int n = in.nextInt();
int m = in.nextInt();
int[] vert = new int[n+1];
for(int i=0 ;i<n ;i++) vert[i] = in.nextInt();
vert[n] = (int)1e9;
int cnt=0,x,y;
ArrayList<Integer> arr = new ArrayList<>();
for(int i=0 ;i<m ;i++) {
x = in.nextInt();
y = in.nextInt();
in.nextInt();
if(x==1) arr.add(y);
}
horz = new int[arr.size()];
for(int i=0 ;i<arr.size();i++) horz[i] = arr.get(i);
Arrays.sort(horz);
Arrays.sort(vert);
int ans = 2*(int)1e5+10;
for(int i=0 ;i<=n ;i++){
int lesshorz = bs(vert[i],horz.length);
ans = Math.min(ans,i+horz.length-lesshorz-1);
}
out.println(ans);
}
static int[] horz;
static int bs(int num,int m){
int mid,lo=0,hi=m-1,r=-1;
while(lo<=hi){
mid = (lo+hi)/2;
if(horz[mid]<num){
lo = mid+1;
r = mid;
}else{
hi =mid-1;
}
}
return r;
}
static class Reader {
private InputStream mIs;
private byte[] buf = new byte[1024];
private int curChar;
private int numChars;
public Reader() {
this(System.in);
}
public Reader(InputStream is) {
mIs = is;
}
public int read() {
if (numChars == -1) {
throw new InputMismatchException();
}
if (curChar >= numChars) {
curChar = 0;
try {
numChars = mIs.read(buf);
} catch (IOException e) {
throw new InputMismatchException();
}
if (numChars <= 0) {
return -1;
}
}
return buf[curChar++];
}
public String nextLine() {
int c = read();
while (isSpaceChar(c)) {
c = read();
}
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isEndOfLine(c));
return res.toString();
}
public String next() {
int c = read();
while (isSpaceChar(c)) {
c = read();
}
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isSpaceChar(c));
return res.toString();
}
public long nextLong() {
int c = read();
while (isSpaceChar(c)) {
c = read();
}
int sgn = 1;
if (c == '-') {
sgn = -1;
c = read();
}
long res = 0;
do {
if (c < '0' || c > '9') {
throw new InputMismatchException();
}
res *= 10;
res += c - '0';
c = read();
} while (!isSpaceChar(c));
return res * sgn;
}
public int nextInt() {
int c = read();
while (isSpaceChar(c)) {
c = read();
}
int sgn = 1;
if (c == '-') {
sgn = -1;
c = read();
}
int res = 0;
do {
if (c < '0' || c > '9') {
throw new InputMismatchException();
}
res *= 10;
res += c - '0';
c = read();
} while (!isSpaceChar(c));
return res * sgn;
}
public boolean isSpaceChar(int c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
public boolean isEndOfLine(int c) {
return c == '\n' || c == '\r' || c == -1;
}
}
}
| nlogn | 1075_C. The Tower is Going Home | CODEFORCES |
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
public class D {
private void solve() {
br = new BufferedReader(new InputStreamReader(System.in));
out = new PrintWriter(System.out);
int n = nextInt(), m = nextInt();
boolean[][] used = new boolean[n + 1][m + 1];
for (int j = 1; j <= (m + 1) / 2; j++) {
int x1 = 1, x2 = n;
for (int i = 1; i <= n; i++) {
if (x1 <= n && !used[x1][j]) {
out.println(x1 + " " + j);
used[x1++][j] = true;
}
if (x2 > 0 && !used[x2][m - j + 1]) {
out.println(x2 + " " + (m - j + 1));
used[x2--][m - j + 1] = true;
}
}
}
out.close();
}
public static void main(String[] args) {
new D().solve();
}
private BufferedReader br;
private StringTokenizer st;
private PrintWriter out;
private String next() {
while (st == null || !st.hasMoreTokens()) {
try {
st = new StringTokenizer(br.readLine());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
return st.nextToken();
}
private int nextInt() {
return Integer.parseInt(next());
}
private long nextLong() {
return Long.parseLong(next());
}
private double nextDouble() {
return Double.parseDouble(next());
}
}
| quadratic | 1179_B. Tolik and His Uncle | CODEFORCES |
/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
public class Ideone
{
static int check(int temp)
{
int count1 = 0;
while (temp>0)
{
if(temp % 2 != 0)
count1++;
temp/= 2;
}
return count1;
}
public static void main (String[] args) throws java.lang.Exception
{
// your code goes here
Scanner sc=new Scanner(System.in);
String a=sc.next();
String b=sc.next();
int m=a.length();
int n=b.length();
int[] zero=new int[n];
int[] one=new int[n];
for(int i=0;i<n;i++)
{
if(i==0)
{
if(b.charAt(i)=='0')
zero[i]++;
else
one[i]++;
}
else
{
zero[i]=zero[i-1];
one[i]=one[i-1];
if(b.charAt(i)=='0')
zero[i]++;
else
one[i]++;
}
}
long res=0;
for(int i=0;i<m;i++)
{
int x=n-m+i;
if(a.charAt(i)=='0')
res+=one[x];
else
res+=zero[x];
if(i>0)
{
if(a.charAt(i)=='0')
res-=one[i-1];
else
res-=zero[i-1];
}
}
System.out.println(res);
}
} | linear | 608_B. Hamming Distance Sum | CODEFORCES |
import java.util.*;
import java.io.*;
public class _1036_B_DiagonalWalkingV2 {
public static void main(String[] args) throws IOException {
int Q = readInt();
while(Q-- > 0) {
long n = readLong(), m = readLong(), k = readLong();
if(Math.max(n, m) > k) println(-1);
else {
long ans = k;
if(n%2 != k%2) ans--;
if(m%2 != k%2) ans--;
println(ans);
}
}
exit();
}
final private static int BUFFER_SIZE = 1 << 16;
private static DataInputStream din = new DataInputStream(System.in);
private static byte[] buffer = new byte[BUFFER_SIZE];
private static int bufferPointer = 0, bytesRead = 0;
static PrintWriter pr = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
public static String readLine() throws IOException {
byte[] buf = new byte[64]; // line length
int cnt = 0, c;
while ((c = Read()) != -1) {
if (c == '\n')
break;
buf[cnt++] = (byte) c;
}
return new String(buf, 0, cnt);
}
public static String read() throws IOException {
byte[] ret = new byte[1024];
int idx = 0;
byte c = Read();
while (c <= ' ') {
c = Read();
}
do {
ret[idx++] = c;
c = Read();
} while (c != -1 && c != ' ' && c != '\n' && c != '\r');
return new String(ret, 0, idx);
}
public static int readInt() throws IOException {
int ret = 0;
byte c = Read();
while (c <= ' ')
c = Read();
boolean neg = (c == '-');
if (neg)
c = Read();
do {
ret = ret * 10 + c - '0';
} while ((c = Read()) >= '0' && c <= '9');
if (neg)
return -ret;
return ret;
}
public static long readLong() throws IOException {
long ret = 0;
byte c = Read();
while (c <= ' ')
c = Read();
boolean neg = (c == '-');
if (neg)
c = Read();
do {
ret = ret * 10 + c - '0';
} while ((c = Read()) >= '0' && c <= '9');
if (neg)
return -ret;
return ret;
}
public static double readDouble() throws IOException {
double ret = 0, div = 1;
byte c = Read();
while (c <= ' ')
c = Read();
boolean neg = (c == '-');
if (neg)
c = Read();
do {
ret = ret * 10 + c - '0';
} while ((c = Read()) >= '0' && c <= '9');
if (c == '.') {
while ((c = Read()) >= '0' && c <= '9') {
ret += (c - '0') / (div *= 10);
}
}
if (neg)
return -ret;
return ret;
}
private static void fillBuffer() throws IOException {
bytesRead = din.read(buffer, bufferPointer = 0, BUFFER_SIZE);
if (bytesRead == -1)
buffer[0] = -1;
}
private static byte Read() throws IOException {
if (bufferPointer == bytesRead)
fillBuffer();
return buffer[bufferPointer++];
}
static void print(Object o) {
pr.print(o);
}
static void println(Object o) {
pr.println(o);
}
static void flush() {
pr.flush();
}
static void println() {
pr.println();
}
static void exit() throws IOException {
din.close();
pr.close();
System.exit(0);
}
}
| linear | 1036_B. Diagonal Walking v.2 | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*
* @author kessido
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
InputReader in = new InputReader(inputStream);
PrintWriter out = new PrintWriter(outputStream);
BTheHat solver = new BTheHat();
solver.solve(1, in, out);
out.close();
}
static class BTheHat {
PrintWriter out;
InputReader in;
int n;
public void solve(int testNumber, InputReader in, PrintWriter out) {
this.out = out;
this.in = in;
n = in.NextInt();
int desiredPair = -1;
int result = query(1);
if (result != 0) {
int l = 2, r = 1 + n / 2;
while (l < r) {
int m = (l + r) / 2;
int mRes = query(m);
if (mRes == 0) {
desiredPair = m;
break;
} else if (mRes == result) {
l = m + 1;
} else {
r = m;
}
}
} else {
desiredPair = 1;
}
out.println("! " + desiredPair);
}
private int query(int i) {
int iV = queryValue(i);
int iN2V = queryValue(i + n / 2);
if (iV < iN2V) {
return -1;
} else if (iV > iN2V) {
return 1;
}
return 0;
}
private int queryValue(int i) {
out.println("? " + i);
out.flush();
return in.NextInt();
}
}
static class InputReader {
BufferedReader reader;
StringTokenizer tokenizer;
public InputReader(InputStream stream) {
reader = new BufferedReader(new InputStreamReader(stream), 32768);
tokenizer = null;
}
public String next() {
while (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
tokenizer = new StringTokenizer(reader.readLine(), " \t\n\r\f,");
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken();
}
public int NextInt() {
return Integer.parseInt(next());
}
}
}
| logn | 1019_B. The hat | CODEFORCES |
import java.io.PrintWriter;
import java.util.*;
import java.util.Arrays ;
import java .lang.String.* ;
import java .lang.StringBuilder ;
public class Test{
static int pos = 0 ;
static int arr[] ;
static LinkedList l1 = new LinkedList() ;
static void find(int p ,char[]x,int put[],String s){
int c= 0 ;
for (int i = 0; i < s.length(); i++) {
if(x[p]==s.charAt(i)){
c++ ; }
}
put[p] = c ;
}
static int mode(int m ,int[]x ){
int temp = 0 ;
for (int i = x.length-1; i >=0; i--) {
if(x[i]<=m){
temp= x[i] ;
/// break ;
return m-temp ;
}
}
return m-temp ;
}
static int mode2(int m ,int[]x ){
int temp = 0 ;
for (int i = x.length-1; i >=0; i--) {
if(x[i]<=m){
temp= x[i] ;
/// break ;
return x[i] ;
}
}
return 0 ;
}
static int find(int x[],int temp){
int j = 0 ;
for (int i = x.length-1; i >=0; i--) {
if(x[i]==temp) return j+1 ;
j++ ;
}
return -1 ;
}
static String ch(long[]x,long b){
for (int i = 0; i < x.length; i++) {
if(x[i]==b)return "YES" ;
}
return "NO" ;
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in) ;
PrintWriter pw = new PrintWriter(System.out);
long n = in.nextLong() ;
long count =1 ;
long temp =n/2;
temp+=count ;
System.out.println(temp);
}
}
| constant | 964_A. Splits | CODEFORCES |
import java.util.Scanner;
public class Main {
public static void main(String args[]) {
Scanner in=new Scanner(System.in);
String str=in.next();
int cnt=0;
for(int i=0;i<str.length();++i) {
if(str.charAt(i)=='1') {
++cnt;
}
}
int i=0;
for(;i<str.length();++i) {
if(str.charAt(i)=='0') {
System.out.print("0");
}
else if(str.charAt(i)=='2') {
while(cnt-->0) {//
System.out.print("1");
}
System.out.print("2");
}
}
while(cnt-->0) {
System.out.print("1");
}
in.close();
}
} | linear | 1009_B. Minimum Ternary String | CODEFORCES |
import java.util.*;
import java.io.*;
import java.math.*;
import java.awt.geom.*;
public class FunctionHeight {
public static void main(String[] args) {
MyScanner sc = new MyScanner();
long n = sc.nl();
long k = sc.nl();
long ans = (n+k-1)/n;
System.out.println(ans);
}
/////////// TEMPLATE FROM HERE /////////////////
private static class MyScanner {
BufferedReader br;
StringTokenizer st;
public MyScanner() {
br = new BufferedReader(new InputStreamReader(System.in));
}
String next() {
while (st == null || !st.hasMoreElements()) {
try {
st = new StringTokenizer(br.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
int ni() {
return Integer.parseInt(next());
}
float nf() {
return Float.parseFloat(next());
}
long nl() {
return Long.parseLong(next());
}
double nd() {
return Double.parseDouble(next());
}
String nextLine() {
String str = "";
try {
str = br.readLine();
} catch (IOException e) {
e.printStackTrace();
}
return str;
}
}
} | constant | 1036_A. Function Height | CODEFORCES |
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.Scanner;
public class A1 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
long size = scan.nextLong();
int numberOfSpecial = scan.nextInt();
long pageSize = scan.nextLong();
long[] specialItemsArray = new long[numberOfSpecial];
for (int i = 0; i < numberOfSpecial; i++) {
specialItemsArray[i] = scan.nextLong();
}
int totalRemoved = 0;
int step = 0;
long currentPageIndex = BigDecimal.valueOf(specialItemsArray[0]).divide(BigDecimal.valueOf(pageSize),2, RoundingMode.UP).setScale(0, RoundingMode.CEILING).longValue();
int specialItemArrayIndex = 1;
while (specialItemArrayIndex < numberOfSpecial) {
long pageIndex = BigDecimal.valueOf(specialItemsArray[specialItemArrayIndex] - totalRemoved).divide(BigDecimal.valueOf(pageSize),2,RoundingMode.UP).setScale(0, RoundingMode.CEILING).longValue();
if (currentPageIndex != pageIndex) {
step++;
totalRemoved = specialItemArrayIndex;
currentPageIndex = BigDecimal.valueOf(specialItemsArray[specialItemArrayIndex] - totalRemoved).divide(BigDecimal.valueOf(pageSize),2,RoundingMode.UP).setScale(0, RoundingMode.CEILING).longValue();
}
specialItemArrayIndex++;
}
System.out.println(step + 1);
}
}
| linear | 1190_A. Tokitsukaze and Discard Items | CODEFORCES |
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Map;
import java.util.StringTokenizer;
import java.util.TreeMap;
public class Main {
static class Task {
int NN = 500005;
int MOD = 1000000007;
int INF = 2000000000;
long INFINITY = 2000000000000000000L;
public void solve(InputReader in, PrintWriter out) {
int t = in.nextInt();
while(t-->0) {
long n =in.nextLong();
long m = in.nextLong();
long x1 = in.nextLong();
long y1 = in.nextLong();
long x2 = in.nextLong();
long y2 = in.nextLong();
long x3 = in.nextLong();
long y3 = in.nextLong();
long x4 = in.nextLong();
long y4 = in.nextLong();
long w = white(1, 1, m, n);
long b = black(1, 1, m, n);
long whited = 0;
if(x3 > x2 || x4 < x1 || y3 > y2 || y4 < y1) {
whited = black(x1, y1, x2, y2);
} else {
whited = black(x1, y1, x2, y2);
long xm1 = Math.max(x1, x3);
long ym1 = Math.max(y1, y3);
long xm2 = Math.min(x2, x4);
long ym2 = Math.min(y2, y4);
whited -= black(xm1, ym1, xm2, ym2);
}
b -= whited;w += whited;
long blacked = white(x3, y3, x4, y4);
w-= blacked;b += blacked;
out.println(w + " " + b);
}
}
long black(long x1, long y1, long x2, long y2) {
long dx = (x2 - x1) + 1;
long dy = (y2 - y1) + 1;
if((x1+y1)%2!=0) {
return ((dy+1)/2)*((dx+1)/2)+(dy/2)*(dx/2);
}
return ((dy+1)/2)*((dx)/2)+(dy/2)*((dx+1)/2);
}
long white(long x1, long y1, long x2, long y2) {
long dx = (x2 - x1) + 1;
long dy = (y2 - y1) + 1;
if((x1+y1)%2==0) {
return ((dy+1)/2)*((dx+1)/2)+(dy/2)*(dx/2);
}
return ((dy+1)/2)*(dx/2)+(dy/2)*((dx+1)/2);
}
}
static void prepareIO(boolean isFileIO) {
//long t1 = System.currentTimeMillis();
Task solver = new Task();
// Standard IO
if(!isFileIO) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
InputReader in = new InputReader(inputStream);
PrintWriter out = new PrintWriter(outputStream);
solver.solve(in, out);
//out.println("time(s): " + (1.0*(System.currentTimeMillis()-t1))/1000.0);
out.close();
}
// File IO
else {
String IPfilePath = System.getProperty("user.home") + "/Downloads/ip.in";
String OPfilePath = System.getProperty("user.home") + "/Downloads/op.out";
InputReader fin = new InputReader(IPfilePath);
PrintWriter fout = null;
try {
fout = new PrintWriter(new File(OPfilePath));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
solver.solve(fin, fout);
//fout.println("time(s): " + (1.0*(System.currentTimeMillis()-t1))/1000.0);
fout.close();
}
}
public static void main(String[] args) {
prepareIO(false);
}
static class InputReader {
public BufferedReader reader;
public StringTokenizer tokenizer;
public InputReader(InputStream stream) {
reader = new BufferedReader(new InputStreamReader(stream), 32768);
tokenizer = null;
}
public InputReader(String filePath) {
File file = new File(filePath);
try {
reader = new BufferedReader(new FileReader(file));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
tokenizer = null;
}
public String nextLine() {
String str = "";
try {
str = reader.readLine();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return str;
}
public String next() {
while (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
tokenizer = new StringTokenizer(reader.readLine());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken();
}
public int nextInt() {
return Integer.parseInt(next());
}
public long nextLong() {
return Long.parseLong(next());
}
public double nextDouble() {
return Double.parseDouble(next());
}
}
} | constant | 1080_C. Masha and two friends | CODEFORCES |
/**
* Created by Baelish on 8/28/2018.
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;
public class F_DSU {
public static void main(String[] args)throws Exception {
FastReader in = new FastReader(System.in);
PrintWriter pw = new PrintWriter(System.out);
n = in.nextInt();
int brr[] = new int[2*n];
for (int i = 0; i < 2*n; i+= 2) {
brr[i] = in.nextInt();
brr[i+1] = in.nextInt();
}
arr = shrink(brr);
int imap[] = new int[2*n];
for (int i = 0; i < 2*n; i++) {
imap[arr[i]] = brr[i];
}
int idx = binarySearch(arr.length);
if(idx >= arr.length) pw.println(-1);
else pw.println(imap[idx]);
pw.close();
}
static int n, arr[];
static int binarySearch(int H) {
int lo = 0, hi = H, mid;
while (lo < hi) {
mid = (lo + hi) / 2;
if (check(mid)) hi = mid;
else lo = mid + 1;
}
if(lo > 0 && check(lo-1)) return lo-1;
return lo;
}
static boolean check(int m){
DSU dsu = new DSU(2*n);
for (int i = 0; i < n; i++) {
int u = arr[2*i], v = arr[2*i+1];
if(u > m) return false;
if(v > m){
if(++dsu.cycle[dsu.find(u)] >= 2) return false;
}
else{
if(!dsu.union(u, v)){
if(++dsu.cycle[dsu.find(u)] >= 2) return false;
}
else{
if(dsu.cycle[dsu.find(u)] >= 2) return false;
}
}
}
return true;
}
static class DSU{
int parent[], cycle[], n;
DSU(int N){
n = N;
parent = new int[N];
cycle = new int[N];
for(int i = 0; i < N; i++){
parent[i] = i;
}
}
DSU(int [] p){
parent = p; n = p.length;
}
int find(int i) {
int p = parent[i];
if (i == p) return i;
return parent[i] = find(p);
}
boolean equiv(int u, int v){
return find(u) == find(v);
}
boolean union(int u, int v){
u = find(u); v = find(v);
if(u != v) {
parent[u] = parent[v];
cycle[v] += cycle[u];
}
return u != v;
}
int count(){
int cnt = 0;
for(int i = 0; i < n; i++){
if(i == find(i)) cnt++;
}
return cnt;
}
}
public static int[] shrink(int[] a) {
int n = a.length;
long[] b = new long[n];
for(int i = 0;i < n;i++)b[i] = (long)a[i]<<32|i;
Arrays.sort(b);
int[] ret = new int[n];
int p = 0;
for(int i = 0;i < n;i++) {
if(i>0 && (b[i]^b[i-1])>>32!=0)p++;
ret[(int)b[i]] = p;
}
return ret;
}
static void debug(Object...obj) {
System.err.println(Arrays.deepToString(obj));
}
static class FastReader {
InputStream is;
private byte[] inbuf = new byte[1024];
private int lenbuf = 0, ptrbuf = 0;
static final int ints[] = new int[128];
public FastReader(InputStream is){
for(int i='0';i<='9';i++) ints[i]=i-'0';
this.is = is;
}
public int readByte(){
if(lenbuf == -1)throw new InputMismatchException();
if(ptrbuf >= lenbuf){
ptrbuf = 0;
try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
if(lenbuf <= 0)return -1;
}
return inbuf[ptrbuf++];
}
public boolean isSpaceChar(int c) {
return !(c >= 33 && c <= 126);
}
public int skip() {
int b;
while((b = readByte()) != -1 && isSpaceChar(b));
return b;
}
public String next(){
int b = skip();
StringBuilder sb = new StringBuilder();
while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ')
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
public int nextInt(){
int num = 0, b;
boolean minus = false;
while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
if(b == '-'){
minus = true;
b = readByte();
}
while(true){
if(b >= '0' && b <= '9'){
num = (num<<3) + (num<<1) + ints[b];
}else{
return minus ? -num : num;
}
b = readByte();
}
}
public long nextLong() {
long num = 0;
int b;
boolean minus = false;
while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
if(b == '-'){
minus = true;
b = readByte();
}
while(true){
if(b >= '0' && b <= '9'){
num = (num<<3) + (num<<1) + ints[b];
}else{
return minus ? -num : num;
}
b = readByte();
}
}
public double nextDouble() {
return Double.parseDouble(next());
}
/* public char nextChar() {
return (char)skip();
}*/
public char[] next(int n){
char[] buf = new char[n];
int b = skip(), p = 0;
while(p < n && !(isSpaceChar(b))){
buf[p++] = (char)b;
b = readByte();
}
return n == p ? buf : Arrays.copyOf(buf, p);
}
/*private char buff[] = new char[1005];
public char[] nextCharArray(){
int b = skip(), p = 0;
while(!(isSpaceChar(b))){
buff[p++] = (char)b;
b = readByte();
}
return Arrays.copyOf(buff, p);
}*/
}
} | quadratic | 1027_F. Session in BSU | CODEFORCES |
import java.io.*;
public class n5D
{
public static void main(String[] args)
{
double a = 0, v = 0, l = 0, d = 0, w = 0;
try
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String[] str = br.readLine().split(" ");
a = Double.parseDouble(str[0]);
v = Double.parseDouble(str[1]);
str = br.readLine().split(" ");
l = Double.parseDouble(str[0]);
d = Double.parseDouble(str[1]);
w = Double.parseDouble(str[2]);
}
catch(Exception e)
{
System.out.println(e);
}
double t1, t2, t3, t4, t5, t, D = 0;
if (w > v) w = v;
t2 = d / v - v / a + w * w / 2 / a / v;
if (t2 >= 0)
{
t1 = v / a;
t3 = t1 - w / a;
}
else
{
if (Math.sqrt(2 * d / a) > (w / a))
{
t1 = Math.sqrt((2 * a * d + w * w) / (a * a * 2));
t3 = t1 - w / a;
}
else
{
t1 = Math.sqrt(2 * d / a);
t3 = 0;
}
t2 = 0;
}
t5 = (l - d - v * v / 2 / a + a * (t1 - t3) * (t1 - t3) / 2) / v;
if (t5 >= 0) t4 = v / a - (t1 - t3);
else
{
t5 = 0;
t4 = -t1 + t3 + Math.sqrt((t1 - t3) * (t1 - t3) + 2 * (l - d) / a);
}
t = t1 + t2 + t3 + t4 + t5;
System.out.println(t);
//System.out.println(t1 + " " + t2 + " " + t3 + " " + t4 + " " + t5);
}
} | constant | 5_D. Follow Traffic Rules | CODEFORCES |
import java.util.*;
import java.io.*;
public class Solution{
public static long page(long p,long k){
return (p-1)/k;
}
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner(System.in);
long n = sc.nextLong();
int m = sc.nextInt();
long k = sc.nextLong();
long[] p = new long[m];
long del = 0;
long nb = 1;
int op = 0;
for(int i=0;i<m;i++) p[i] = sc.nextLong();
for(int i=1;i<m;i++){
if(page(p[i]-del,k)!=page(p[i-1]-del,k)){
del += nb;
nb = 1;
op++;
}else{
nb++;
}
}
if(nb!=0) op++;
System.out.println(op);
}
} | linear | 1191_C. Tokitsukaze and Discard Items | CODEFORCES |
import java.io.PrintWriter;
import java.util.*;
import java.util.Arrays ;
import java .lang.String.* ;
import java .lang.StringBuilder ;
public class Test{
static int pos = 0 ;
static int arr[] ;
static LinkedList l1 = new LinkedList() ;
static void find(int p ,char[]x,int put[],String s){
int c= 0 ;
for (int i = 0; i < s.length(); i++) {
if(x[p]==s.charAt(i)){
c++ ; }
}
put[p] = c ;
}
static int mode(int m ,int[]x ){
int temp = 0 ;
for (int i = x.length-1; i >=0; i--) {
if(x[i]<=m){
temp= x[i] ;
/// break ;
return m-temp ;
}
}
return m-temp ;
}
static int mode2(int m ,int[]x ){
int temp = 0 ;
for (int i = x.length-1; i >=0; i--) {
if(x[i]<=m){
temp= x[i] ;
/// break ;
return x[i] ;
}
}
return 0 ;
}
static int find(int x[],int temp){
int j = 0 ;
for (int i = x.length-1; i >=0; i--) {
if(x[i]==temp) return j+1 ;
j++ ;
}
return -1 ;
}
static String ch(long[]x,long b){
for (int i = 0; i < x.length; i++) {
if(x[i]==b)return "YES" ;
}
return "NO" ;
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in) ;
PrintWriter pw = new PrintWriter(System.out);
int k=in.nextInt(), n=in.nextInt(), s=in.nextInt(), p=in.nextInt() ;
int paper =n/s;
if(n%s!=0) paper++ ;
paper*=k ;
int fin = paper/p ;
if(paper%p!=0) fin++ ;
System.out.println( fin );
}
}
| constant | 965_A. Paper Airplanes | CODEFORCES |
import java.util.*;
import static java.lang.Math.*;
import java.io.*;
public class SolutionB {
public static void main(String args[])throws IOException{
Scanner sc = new Scanner(System.in);
int a[] = new int[1501];
for(int i = 0; i < 3; i++){
a[sc.nextInt()]++;
}
if(a[1] > 0 || a[2] > 1 || a[3] > 2 || (a[4] == 2 && a[2] == 1)){
System.out.println("YES");
}else{
System.out.println("NO");
}
}
} | constant | 911_C. Three Garlands | CODEFORCES |
import java.io.IOException;
import java.io.InputStream;
import java.util.InputMismatchException;
import java.util.Stack;
public class D527A2 {
public static void main(String[] args) {
FastScanner in = new FastScanner(System.in);
int N = in.nextInt();
Stack<Integer> stack = new Stack<>();
for(int i = 0; i < N; i++) {
int num = in.nextInt() % 2;
if(stack.size() >= 1 && stack.lastElement() == num)
stack.pop();
else
stack.add(num);
}
System.out.println(stack.size() <= 1 ? "YES" : "NO");
}
/**
* Source: Matt Fontaine
*/
static class FastScanner {
private InputStream stream;
private byte[] buf = new byte[1024];
private int curChar;
private int chars;
public FastScanner(InputStream stream) {
this.stream = stream;
}
int read() {
if (chars == -1)
throw new InputMismatchException();
if (curChar >= chars) {
curChar = 0;
try {
chars = stream.read(buf);
} catch (IOException e) {
throw new InputMismatchException();
}
if (chars <= 0)
return -1;
}
return buf[curChar++];
}
boolean isSpaceChar(int c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
boolean isEndline(int c) {
return c == '\n' || c == '\r' || c == -1;
}
public int nextInt() {
return Integer.parseInt(next());
}
public long nextLong() {
return Long.parseLong(next());
}
public double nextDouble() {
return Double.parseDouble(next());
}
public String next() {
int c = read();
while (isSpaceChar(c))
c = read();
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isSpaceChar(c));
return res.toString();
}
public String nextLine() {
int c = read();
while (isEndline(c))
c = read();
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isEndline(c));
return res.toString();
}
}
}
/*
5
2 1 1 2 5
outputCopy
YES
inputCopy
3
4 5 3
outputCopy
YES
inputCopy
2
10 10
outputCopy
YES
inputCopy
3
1 2 3
outputCopy
NO
5
2 3 2 2 3
YES
*/ | linear | 1092_D1. Great Vova Wall (Version 1) | CODEFORCES |
import java.util.*;
import java.io.*;
import java.awt.Point;
import java.math.BigInteger;
public class stacks {
public static void main(String[] args) throws Exception {
FastIO sc = new FastIO(System.in);
PrintWriter pw = new PrintWriter(System.out);
int n = sc.nextInt();
int m = sc.nextInt();
long remove = 0;
int[] heights = new int[n+1];
for(int i = 0; i < n; i++) {
heights[i] = sc.nextInt();
remove += heights[i];
}
Arrays.sort(heights);
//System.out.println(Arrays.toString(heights));
long keep = 0;
for(int i = n; i> 0; i--) {
if(heights[i-1] >= heights[i]) {
heights[i-1] = heights[i]-1;
}
keep += heights[i] - heights[i-1];
}
//System.out.println(Arrays.toString(heights));
pw.println(remove - keep);
pw.close();
}
static class FastIO {
//Is your Fast I/O being bad?
InputStream dis;
byte[] buffer = new byte[1 << 17];
int pointer = 0;
public FastIO(String fileName) throws Exception {
dis = new FileInputStream(fileName);
}
public FastIO(InputStream is) throws Exception {
dis = is;
}
int nextInt() throws Exception {
int ret = 0;
byte b;
do {
b = nextByte();
} while (b <= ' ');
boolean negative = false;
if (b == '-') {
negative = true;
b = nextByte();
}
while (b >= '0' && b <= '9') {
ret = 10 * ret + b - '0';
b = nextByte();
}
return (negative) ? -ret : ret;
}
long nextLong() throws Exception {
long ret = 0;
byte b;
do {
b = nextByte();
} while (b <= ' ');
boolean negative = false;
if (b == '-') {
negative = true;
b = nextByte();
}
while (b >= '0' && b <= '9') {
ret = 10 * ret + b - '0';
b = nextByte();
}
return (negative) ? -ret : ret;
}
byte nextByte() throws Exception {
if (pointer == buffer.length) {
dis.read(buffer, 0, buffer.length);
pointer = 0;
}
return buffer[pointer++];
}
String next() throws Exception {
StringBuffer ret = new StringBuffer();
byte b;
do {
b = nextByte();
} while (b <= ' ');
while (b > ' ') {
ret.appendCodePoint(b);
b = nextByte();
}
return ret.toString();
}
}
}
| nlogn | 1061_B. Views Matter | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.FileNotFoundException;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*
* @author \/
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
Scanner in = new Scanner(inputStream);
PrintWriter out = new PrintWriter(outputStream);
TaskC solver = new TaskC();
solver.solve(1, in, out);
out.close();
}
static class TaskC {
public void solve(int testNumber, Scanner in, PrintWriter out) {
int n = in.nextInt();
int m = in.nextInt();
TaskC.pair[] songs = new TaskC.pair[n];
long sum = 0;
for (int i = 0; i < n; i++) {
songs[i] = new TaskC.pair(in.nextInt(), in.nextInt());
sum += songs[i].a;
}
Arrays.sort(songs);
int res = 0;
int idx = n - 1;
while (sum > m) {
if (idx < 0) {
break;
}
sum -= (songs[idx].a - songs[idx].b);
res++;
idx--;
}
if (sum > m) {
out.println(-1);
} else {
out.println(res);
}
}
static class pair implements Comparable<TaskC.pair> {
int a;
int b;
pair(int a, int b) {
this.a = a;
this.b = b;
}
public int compareTo(TaskC.pair p) {
return (this.a - this.b) - (p.a - p.b);
}
}
}
static class Scanner {
StringTokenizer st;
BufferedReader br;
public Scanner(InputStream s) {
br = new BufferedReader(new InputStreamReader(s));
}
public Scanner(String s) {
try {
br = new BufferedReader(new FileReader(s));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
public String next() {
while (st == null || !st.hasMoreTokens()) {
try {
st = new StringTokenizer(br.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
public int nextInt() {
return Integer.parseInt(next());
}
}
}
| nlogn | 1015_C. Songs Compression | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.io.BufferedWriter;
import java.io.Writer;
import java.io.OutputStreamWriter;
import java.util.InputMismatchException;
import java.io.IOException;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*
* @author gaidash
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
InputReader in = new InputReader(inputStream);
OutputWriter out = new OutputWriter(outputStream);
TaskC solver = new TaskC();
solver.solve(1, in, out);
out.close();
}
static class TaskC {
public void solve(int testNumber, InputReader in, OutputWriter out) {
final int SIZE = 256;
final int UNDEF = -1;
int nPixels = in.nextInt();
int groupSize = in.nextInt();
int[] a = in.nextIntArray(nPixels);
boolean[] exists = new boolean[SIZE];
int[] left = new int[SIZE];
int[] right = new int[SIZE];
int[] ret = new int[nPixels];
Arrays.fill(ret, UNDEF);
for (int i = 0; i < nPixels; i++) {
for (int p = 0; p < SIZE; p++) {
if (exists[p] && left[p] <= a[i] && a[i] <= right[p]) {
ret[i] = left[p];
left[a[i]] = left[p];
right[a[i]] = right[p];
break;
}
}
if (ret[i] == UNDEF) {
int l = Math.max(a[i] - groupSize + 1, 0);
int r = l + groupSize - 1;
for (int p = a[i] - 1; p >= 0; p--) {
if (exists[p]) {
if (p >= l) {
int d = p - l;
l = p + 1;
r += d + 1;
}
if (right[p] >= l) {
right[p] = l - 1;
}
}
}
for (int p = a[i] + 1; p < SIZE; p++) {
if (exists[p] && left[p] <= r) {
r = left[p] - 1;
}
}
left[a[i]] = l;
right[a[i]] = r;
ret[i] = l;
}
exists[a[i]] = true;
}
// for (int p : a) {
// System.out.println("Segment for pixel " + p + " = " + "(" + left[p] + " , " + right[p] + ")");
// }
out.print(ret);
}
}
static class OutputWriter {
private final PrintWriter writer;
public OutputWriter(OutputStream outputStream) {
writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
}
public OutputWriter(Writer writer) {
this.writer = new PrintWriter(writer);
}
public void print(int[] array) {
for (int i = 0; i < array.length; i++) {
if (i != 0) {
writer.print(' ');
}
writer.print(array[i]);
}
}
public void close() {
writer.close();
}
}
static class InputReader {
private InputStream stream;
private byte[] buf = new byte[1024];
private int curChar;
private int numChars;
private InputReader.SpaceCharFilter filter;
public InputReader(InputStream stream) {
this.stream = stream;
}
public int read() {
if (numChars == -1) {
throw new InputMismatchException();
}
if (curChar >= numChars) {
curChar = 0;
try {
numChars = stream.read(buf);
} catch (IOException e) {
throw new InputMismatchException();
}
if (numChars <= 0) {
return -1;
}
}
return buf[curChar++];
}
public int nextInt() {
int c = read();
while (isSpaceChar(c)) {
c = read();
}
int sgn = 1;
if (c == '-') {
sgn = -1;
c = read();
}
int res = 0;
do {
if (c < '0' || c > '9') {
throw new InputMismatchException();
}
res *= 10;
res += c - '0';
c = read();
} while (!isSpaceChar(c));
return res * sgn;
}
public boolean isSpaceChar(int c) {
if (filter != null) {
return filter.isSpaceChar(c);
}
return isWhitespace(c);
}
public static boolean isWhitespace(int c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
public int[] nextIntArray(int n) {
int[] array = new int[n];
for (int i = 0; i < n; ++i) array[i] = nextInt();
return array;
}
public interface SpaceCharFilter {
public boolean isSpaceChar(int ch);
}
}
}
| quadratic | 980_C. Posterized | CODEFORCES |
import java.io.*;
import java.util.*;
public class Main {
static class FastScanner {
BufferedReader br;
StringTokenizer st;
public FastScanner() {
try {
br = new BufferedReader(new InputStreamReader(System.in));
st = new StringTokenizer(br.readLine());
} catch (Exception e){e.printStackTrace();}
}
public String next() {
if (st.hasMoreTokens()) return st.nextToken();
try {st = new StringTokenizer(br.readLine());}
catch (Exception e) {e.printStackTrace();}
return st.nextToken();
}
public int nextInt() {return Integer.parseInt(next());}
public long nextLong() {return Long.parseLong(next());}
public double nextDouble() {return Double.parseDouble(next());}
public String nextLine() {
String line = "";
if(st.hasMoreTokens()) line = st.nextToken();
else try {return br.readLine();}catch(IOException e){e.printStackTrace();}
while(st.hasMoreTokens()) line += " "+st.nextToken();
return line;
}
}
public static void main(String[] args) {
FastScanner sc = new FastScanner();
PrintWriter pw = new PrintWriter(System.out);
int n = sc.nextInt();
int best = 1;
int bestTime = Integer.MAX_VALUE;
for(int i=0;i<n;i++) {
int time;
int a = sc.nextInt();
time = (a%n==0 || a%n<=i) ? a/n : (a+n)/n;
if(time < bestTime) {
best = i + 1;
bestTime = time;
}
}
pw.println(best);
pw.close();
}
}
| linear | 996_B. World Cup | CODEFORCES |
//package codeforces;
import java.util.Scanner;
public class ex5 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
String S [] = new String[3];
int m=0,s=0,p=0;
int temp=0;
for (int i = 0; i < S.length; i++) {
S[i]=scan.next();
if(S[i].indexOf('m')!=-1) m++;
if(S[i].indexOf('s')!=-1) s++;
if(S[i].indexOf('p')!=-1) p++;
}
int n1 = Integer.parseInt(S[0].substring(0,1));
int n2 = Integer.parseInt(S[1].substring(0,1));
int n3 = Integer.parseInt(S[2].substring(0,1));
int d3 = Math.abs(n1-n2);
int d4 = Math.abs(n1-n3);
int d5 = Math.abs(n2-n3);
if(m==3||s==3||p==3) {
if(d3==1&d5==1&d4==2||d3==1&d4==1&d5==2||d5==1&d4==1&d3==2)
System.out.println(0);
else
if(d3==0&d4==0) System.out.println(0);
else
if(d3<d5&d3<d4) {
if(d3==1||d3==2||d3==0) System.out.println(1);
else System.out.println(2);
}
else if (d5<d4&d5<d3){
if(d5==1||d5==2||d5==0) System.out.println(1);
else System.out.println(2);
}
else if(d4<d5&d4<d3) {
if(d4==1||d4==2||d4==0) System.out.println(1);
else System.out.println(2);
}
else if(d3==2&d5==2||d4==2&d5==2||d3==2&d4==2||d3==1&d5==1||d4==1&d5==1||d3==2&d4==1)
System.out.println(1);
else System.out.println(2);
}
if(m==2||s==2||p==2) {
char c1 = S[0].charAt(1);
char c2 = S[1].charAt(1);
char c3 = S[2].charAt(1);
if(c1==c2) {
if(n1==n2) System.out.println(1);
else if(d3==1||d3==2) System.out.println(1);
else System.out.println(2);
}
if(c1==c3) {
if(n1==n3) System.out.println(1);
else if(d4==1||d4==2) System.out.println(1);
else System.out.println(2);
}
if(c2==c3) {
if(n2==n3) System.out.println(1);
else if(d5==1||d5==2) System.out.println(1);
else System.out.println(2);
}
}
if(m==1&s==1&p==1) System.out.println(2);
}
}
| constant | 1191_B. Tokitsukaze and Mahjong | CODEFORCES |
import java.util.*;
public class Main {
static int mod = 1000000007;
static int size = 200000;
static long[] fac = new long[size];
static long[] finv = new long[size];
static long[] inv = new long[size];
static int INF = Integer.MAX_VALUE;
public static void main(String[] args){
Scanner scanner = new Scanner(System.in);
String[] s = new String[2];
for(int i = 0; i < 2; i++){
s[i] = scanner.next();
}
int n = s[0].length();
char[][] c = new char[2][n];
for(int i = 0; i < 2; i++){
for(int j = 0; j < n; j++){
c[i][j] = s[i].charAt(j);
}
}
int count = 0;
for(int i = 0; i < n-1; i++){
if(c[0][i] == '0' && c[1][i] == '0' && c[0][i+1] == '0'){
c[0][i] = 'X';
c[1][i] = 'X';
c[0][i+1] = 'X';
count++;
}
if(c[0][i] == '0' && c[1][i] == '0' && c[1][i+1] == '0'){
c[0][i] = 'X';
c[1][i] = 'X';
c[1][i+1] = 'X';
count++;
}
if(c[0][i] == '0' && c[0][i+1] == '0' && c[1][i+1] == '0'){
c[0][i] = 'X';
c[0][i+1] = 'X';
c[1][i+1] = 'X';
count++;
}
if(c[0][i+1] == '0' && c[1][i+1] == '0' && c[1][i] == '0'){
c[1][i] = 'X';
c[0][i+1] = 'X';
c[1][i+1] = 'X';
count++;
}
}
System.out.println(count);
}
public static boolean isPrime(int n){
if(n == 1) return false;
if(n == 2 || n == 3) return true;
for(int i = 2; i <= Math.sqrt(n); i++){
if(n % i == 0) return false;
}
return true;
}
// tar の方が数字が大きいかどうか
static boolean compare(String tar, String src) {
if (src == null) return true;
if (src.length() == tar.length()) {
int len = tar.length();
for (int i = 0; i < len; i++) {
if (src.charAt(i) > tar.charAt(i)) {
return false;
} else if (src.charAt(i) < tar.charAt(i)) {
return true;
}
}
return tar.compareTo(src) > 0 ? true : false;
} else if (src.length() < tar.length()) {
return true;
} else if (src.length() > tar.length()) {
return false;
}
return false;
}
public static class Edge{
int to;
Edge(int to){
this.to = to;
}
}
public static void swap(long a, long b){
long tmp = 0;
if(a > b){
tmp = a;
a = b;
b = tmp;
}
}
static class Pair implements Comparable<Pair>{
int first, second;
Pair(int a, int b){
first = a;
second = b;
}
@Override
public boolean equals(Object o){
if (this == o) return true;
if (!(o instanceof Pair)) return false;
Pair p = (Pair) o;
return first == p.first && second == p.second;
}
@Override
public int compareTo(Pair p){
return first == p.first ? second - p.second : first - p.first; //firstで昇順にソート
//return (first == p.first ? second - p.second : first - p.first) * -1; //firstで降順にソート
//return second == p.second ? first - p.first : second - p.second;//secondで昇順にソート
//return (second == p.second ? first - p.first : second - p.second)*-1;//secondで降順にソート
}
}
//繰り返し二乗法
public static long pow(long x, long n){
long ans = 1;
while(n > 0){
if((n & 1) == 1){
ans = ans * x;
ans %= mod;
}
x = x * x % mod;
n >>= 1;
}
return ans;
}
public static long div(long x, long y){
return (x*pow(y, mod-2))%mod;
}
//fac, inv, finvテーブルの初期化、これ使う場合はinitComb()で初期化必要
public static void initComb(){
fac[0] = finv[0] = inv[0] = fac[1] = finv[1] = inv[1] = 1;
for (int i = 2; i < size; ++i) {
fac[i] = fac[i - 1] * i % mod;
inv[i] = mod - (mod / i) * inv[(int) (mod % i)] % mod;
finv[i] = finv[i - 1] * inv[i] % mod;
}
}
//nCk % mod
public static long comb(int n, int k){
return fac[n] * finv[k] % mod * finv[n - k] % mod;
}
//n! % mod
public static long fact(int n){
return fac[n];
}
//(n!)^-1 with % mod
public static long finv(int n){
return finv[n];
}
static class UnionFind {
int[] parent;
public UnionFind(int size) {
parent = new int[size];
Arrays.fill(parent, -1);
}
public boolean unite(int x, int y) {
x = root(x);
y = root(y);
if (x != y) {
if (parent[y] < parent[x]) {
int tmp = y;
y = x;
x = tmp;
}
parent[x] += parent[y];
parent[y] = x;
return true;
}
return false;
}
public boolean same(int x, int y) {
return root(x) == root(y);
}
public int root(int x) {
return parent[x] < 0 ? x : (parent[x] = root(parent[x]));
}
public int size(int x) {
return -parent[root(x)];
}
}
public static int upperBound(int[] array, int value) {
int low = 0;
int high = array.length;
int mid;
while( low < high ) {
mid = ((high - low) >>> 1) + low; // (high + low) / 2
if( array[mid] <= value ) {
low = mid + 1;
} else {
high = mid;
}
}
return low;
}
public static final int lowerBound(final int[] arr, final int value) {
int low = 0;
int high = arr.length;
int mid;
while (low < high){
mid = ((high - low) >>> 1) + low; //(low + high) / 2 (オーバーフロー対策)
if (arr[mid] < value) {
low = mid + 1;
} else {
high = mid;
}
}
return low;
}
//n,mの最大公約数
public static long gcd(long n, long m){
if(m > n) return gcd(m,n);
if(m == 0) return n;
return gcd(m, n%m);
}
//3要素のソート
private class Pair2 implements Comparable<Pair2> {
String s;
int p;
int index;
public Pair2(String s, int p, int index) {
this.s = s;
this.p = p;
this.index = index;
}
public int compareTo(Pair2 other) {
if (s.equals(other.s)) {
return other.p - this.p;
}
return this.s.compareTo(other.s);
}
}
//c -> intに変換
public static int c2i(char c){
if('A' <= c && c <= 'Z'){
return c - 'A';
}else{
return c - 'a' + 26;
}
}
// int -> charに変換
public static char i2c(int i){
if(0 <= i && i < 26){
return (char)(i + 'A');
}else{
return (char)(i + 'a' - 26);
}
}
}
| constant | 991_D. Bishwock | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*
* @author Liavontsi Brechka
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
InputReader in = new InputReader(inputStream);
PrintWriter out = new PrintWriter(outputStream);
DEhabIEsheOdnaOcherednayaZadachaNaXor solver = new DEhabIEsheOdnaOcherednayaZadachaNaXor();
solver.solve(1, in, out);
out.close();
}
static class DEhabIEsheOdnaOcherednayaZadachaNaXor {
public void solve(int testNumber, InputReader in, PrintWriter out) {
int c = 0;
int d = 0;
int prevSign = 0;
int nextSign;
boolean zeroOut = true;
for (int i = 29; i >= 0; i--) {
if (zeroOut) {
print(c, d, out);
prevSign = read(in);
}
print((1 << i) | c, (1 << i) | d, out);
nextSign = read(in);
if (prevSign == nextSign) {
zeroOut = false;
print((1 << i) | c, d, out);
nextSign = read(in);
if (nextSign < 0) {
c = (1 << i) | c;
d = (1 << i) | d;
}
} else {
zeroOut = true;
if (nextSign < 0) c = (1 << i) | c;
else d = (1 << i) | d;
}
}
out.printf("! %d %d", c, d);
out.flush();
}
private void print(int c, int d, PrintWriter out) {
out.printf("? %d %d\n", c, d);
out.flush();
}
private int read(InputReader in) {
return in.nextInt();
}
}
static class InputReader {
private final BufferedReader reader;
private StringTokenizer tokenizer;
public InputReader(InputStream in) {
reader = new BufferedReader(new InputStreamReader(in));
}
public int nextInt() {
return Integer.parseInt(next());
}
public String next() {
while (tokenizer == null || !tokenizer.hasMoreTokens()) {
tokenizer = new StringTokenizer(readLine());
}
return tokenizer.nextToken();
}
public String readLine() {
String line;
try {
line = reader.readLine();
} catch (IOException e) {
throw new RuntimeException(e);
}
return line;
}
}
}
| logn | 1088_D. Ehab and another another xor problem | CODEFORCES |
import sun.reflect.generics.tree.Tree;
import java.io.*;
import java.math.BigInteger;
import java.net.Inet4Address;
import java.util.*;
public class l {
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////// /////////
//////// /////////
//////// HHHH HHHH EEEEEEEEEEEEE MMMM MMMM OOOOOO SSSSSSS EEEEEEEEEEEEE /////////
//////// HHHH HHHH EEEEEEEEEEEEE MMMMMM MMMMMM OOO OOO SSSS SSS EEEEEEEEEEEEE /////////
//////// HHHH HHHH EEEEE MMMM MMM MMM MMMM OOO OOO SSSS SSS EEEEE /////////
//////// HHHH HHHH EEEEE MMMM MMMMMM MMMM OOO OOO SSSS EEEEE /////////
//////// HHHH HHHH EEEEE MMMM MMMM OOO OOO SSSSSSS EEEEE /////////
//////// HHHHHHHHHHHHHHHH EEEEEEEEEEE MMMM MMMM OOO OOO SSSSSS EEEEEEEEEEE /////////
//////// HHHHHHHHHHHHHHHH EEEEEEEEEEE MMMM MMMM OOO OOO SSSSSSS EEEEEEEEEEE /////////
//////// HHHH HHHH EEEEE MMMM MMMM OOO OOO SSSS EEEEE /////////
//////// HHHH HHHH EEEEE MMMM MMMM OOO OOO SSS SSSS EEEEE /////////
//////// HHHH HHHH EEEEEEEEEEEEE MMMM MMMM OOO OOO SSS SSSS EEEEEEEEEEEEE /////////
//////// HHHH HHHH EEEEEEEEEEEEE MMMM MMMM OOOOOO SSSSSSS EEEEEEEEEEEEE /////////
//////// /////////
//////// /////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static long mod = (int) (1e9 + 7);
static int n;
static StringBuilder sol;
static class pair implements Comparable<pair> {
int L,R;
public pair( int x,int y) {
L=x;R=y;
}
public int compareTo(pair o) {
if (L!=o.L)return L-o.L;
return o.R-R;
}
public String toString(){
return L+" "+R;
}
}
static boolean is;
public static void main(String[] args) throws IOException {
Scanner sc = new Scanner(System.in);
//FileWriter f = new FileWriter("C:\\Users\\Ibrahim\\out.txt");
PrintWriter pw = new PrintWriter(System.out);
int m = sc.nextInt();
int n = sc.nextInt();
int q = sc.nextInt();
TreeSet<Integer>length= new TreeSet<>();
length.add(0);
length.add(n);
TreeSet<Integer>width= new TreeSet<>();
width.add(0);
width.add(m);
TreeMap<Integer,Integer>len= new TreeMap<>();
len.put(n,1);
TreeMap<Integer,Integer>wid= new TreeMap<>();
wid.put(m,1);
while (q-->0){
String t= sc.next();
if (t.equals("H")) {
int x = sc.nextInt();
int k1 = length.ceiling(x);
int k2 = length.floor(x);
if (x != k1) {
int s = k1 - k2;
int con = len.get(s);
if (con == 1) len.remove(s);
else len.put(s, con - 1);
len.put((k1 - x), len.getOrDefault((k1 - x), 0) + 1);
len.put((x - k2), len.getOrDefault((x - k2), 0) + 1);
length.add(x);
}
}
else {
int x = sc.nextInt();
int k1 = width.ceiling(x);
int k2 = width.floor(x);
if (x != k1) {
int s = k1 - k2;
//System.out.println(s+" "+k1+" "+k2);
int con = wid.get(s);
if (con == 1) wid.remove(s);
else wid.put(s, con - 1);
wid.put((k1 - x), wid.getOrDefault((k1 - x), 0) + 1);
wid.put((x - k2), wid.getOrDefault((x - k2), 0) + 1);
width.add(x);
}
}
pw.println(1l*len.lastKey()*wid.lastKey());
}
pw.flush();
}
static class Scanner {
StringTokenizer st;
BufferedReader br;
public Scanner(FileReader r) {
br = new BufferedReader(r);
}
public Scanner(InputStream s) {
br = new BufferedReader(new InputStreamReader(s));
}
public String next() throws IOException {
while (st == null || !st.hasMoreTokens())
st = new StringTokenizer(br.readLine());
return st.nextToken();
}
public int nextInt() throws IOException {
return Integer.parseInt(next());
}
public long nextLong() throws IOException {
return Long.parseLong(next());
}
public String nextLine() throws IOException {
return br.readLine();
}
public double nextDouble() throws IOException {
String x = next();
StringBuilder sb = new StringBuilder("0");
double res = 0, f = 1;
boolean dec = false, neg = false;
int start = 0;
if (x.charAt(0) == '-') {
neg = true;
start++;
}
for (int i = start; i < x.length(); i++)
if (x.charAt(i) == '.') {
res = Long.parseLong(sb.toString());
sb = new StringBuilder("0");
dec = true;
} else {
sb.append(x.charAt(i));
if (dec)
f *= 10;
}
res += Long.parseLong(sb.toString()) / f;
return res * (neg ? -1 : 1);
}
public boolean ready() throws IOException {
return br.ready();
}
}
} | nlogn | 527_C. Glass Carving | CODEFORCES |
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.InputMismatchException;
import java.io.IOException;
import java.util.ArrayList;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution is at the top
*
* @author caoash
*/
public class Main {
public static void main(String[] args) {
InputStream inputStream = System.in;
OutputStream outputStream = System.out;
FastScanner in = new FastScanner(inputStream);
PrintWriter out = new PrintWriter(outputStream);
BObtainingTheString solver = new BObtainingTheString();
solver.solve(1, in, out);
out.close();
}
static class BObtainingTheString {
public void solve(int testNumber, FastScanner br, PrintWriter pw) {
int n = br.nextInt();
String s = br.nextString();
String t = br.nextString();
char[] sarr = new char[n];
char[] tarr = new char[n];
int[] sAppear = new int[26];
int[] tAppear = new int[26];
for (int i = 0; i < s.length(); i++) {
sarr[i] = s.charAt(i);
tarr[i] = t.charAt(i);
sAppear[s.charAt(i) - 'a']++;
tAppear[t.charAt(i) - 'a']++;
}
for (int i = 0; i < 26; i++) {
if (sAppear[i] != tAppear[i]) {
pw.println(-1);
pw.close();
}
}
ArrayList<Integer> ans = new ArrayList<Integer>();
for (int i = 0; i < n; i++) {
char curr = tarr[i];
for (int j = i + 1; j < n; j++) {
if (sarr[j] == curr) {
for (int k = j; k > i; k--) {
ans.add(k);
char temp = sarr[k - 1];
sarr[k - 1] = sarr[k];
sarr[k] = temp;
}
break;
}
}
}
pw.println(ans.size());
for (int e : ans) {
pw.print(e + " ");
}
pw.close();
}
}
static class FastScanner {
private InputStream stream;
private byte[] buf = new byte[1024];
private int curChar;
private int numChars;
private FastScanner.SpaceCharFilter filter;
public FastScanner(InputStream stream) {
this.stream = stream;
}
public int read() {
if (numChars == -1) {
throw new InputMismatchException();
}
if (curChar >= numChars) {
curChar = 0;
try {
numChars = stream.read(buf);
} catch (IOException e) {
throw new InputMismatchException();
}
if (numChars <= 0) {
return -1;
}
}
return buf[curChar++];
}
public int nextInt() {
int c = read();
while (isSpaceChar(c)) {
c = read();
}
int sgn = 1;
if (c == '-') {
sgn = -1;
c = read();
}
int res = 0;
do {
if (c < '0' || c > '9') {
throw new InputMismatchException();
}
res *= 10;
res += c - '0';
c = read();
} while (!isSpaceChar(c));
return res * sgn;
}
public String nextString() {
int c = read();
while (isSpaceChar(c)) {
c = read();
}
StringBuilder res = new StringBuilder();
do {
if (Character.isValidCodePoint(c)) {
res.appendCodePoint(c);
}
c = read();
} while (!isSpaceChar(c));
return res.toString();
}
public boolean isSpaceChar(int c) {
if (filter != null) {
return filter.isSpaceChar(c);
}
return isWhitespace(c);
}
public static boolean isWhitespace(int c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
public interface SpaceCharFilter {
public boolean isSpaceChar(int ch);
}
}
}
| quadratic | 1015_B. Obtaining the String | CODEFORCES |
import java.util.*;
import java.io.*;
public class aaaaaaaaaaaaaaaa {
public void run() throws Exception {
Scanner file = new Scanner(System.in);
int a = file.nextInt(), b= file.nextInt(), c = file.nextInt(), n = file.nextInt();
a -= c;
b -= c;
if (a < 0 || b < 0) System.out.println(-1);
else {
int x = a + b + c;
if (x >= n) System.out.println(-1);
else System.out.println(n - x);
}
}
public static void main(String[] args) throws Exception {
new aaaaaaaaaaaaaaaa().run();
}
} | constant | 991_A. If at first you don't succeed... | CODEFORCES |
// discussed with rainboy
import java.io.*;
import java.util.*;
public class CF915E {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
PrintWriter pw = new PrintWriter(System.out);
int n = Integer.parseInt(br.readLine());
int q = Integer.parseInt(br.readLine());
TreeMap<Integer, Integer> mp = new TreeMap<>();
int ans = 0;
while (q-- > 0) {
StringTokenizer st = new StringTokenizer(br.readLine());
int l = Integer.parseInt(st.nextToken()) - 1;
int r = Integer.parseInt(st.nextToken());
int t = Integer.parseInt(st.nextToken());
Map.Entry<Integer, Integer> e;
int l_, r_;
if (t == 1) {
if ((e = mp.floorEntry(l)) != null && (r_ = e.getValue()) >= l) {
l_ = e.getKey();
ans -= r_ - l_;
l = l_;
r = Math.max(r, r_);
}
while ((e = mp.higherEntry(l)) != null && (l_ = e.getKey()) <= r) {
r_ = e.getValue();
ans -= r_ - l_;
r = Math.max(r, r_);
mp.remove(l_);
}
ans += r - l;
mp.put(l, r);
} else {
r_ = l;
if ((e = mp.floorEntry(l)) != null && (r_ = e.getValue()) > l) {
l_ = e.getKey();
if (l_ < l)
mp.put(l_, l);
else
mp.remove(l_);
ans -= r_ - l;
}
while ((e = mp.higherEntry(l)) != null && (l_ = e.getKey()) < r) {
r_ = e.getValue();
mp.remove(l_);
ans -= r_ - l_;
}
if (r_ > r) {
mp.put(r, r_);
ans += r_ - r;
}
}
pw.println(n - ans);
}
pw.close();
}
}
| nlogn | 915_E. Physical Education Lessons | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.lang.reflect.Array;
import java.util.HashSet;
import java.util.StringTokenizer;
public class Main {
public static String conv(String str) {
boolean[] Arr = new boolean[26];
for (int i = 0; i < str.length(); i++) {
Arr[str.charAt(i) - 'a'] = true;
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 26; i++) {
if (Arr[i])
sb.append((char) (i + 'a'));
}
return "" + sb;
}
public static void main(String[] args) throws IOException, InterruptedException {
PrintWriter pw = new PrintWriter(System.out);
Scanner sc = new Scanner(System.in);
HashSet<String> hs = new HashSet<String>();
int[] Arr = new int[14];
long max = 0;
for (int i = 0; i < 14; i++) {
Arr[i] = sc.nextInt();
}
for (int i = 0; i < 14; i++) {
int[] arr = Arr.clone();
long sum = 0;
int r = arr[i];
arr[i] = 0;
for (int j = i + 1; j < arr.length && r > 0; j++) {
arr[j]++;
r--;
}
for (int j = 0; j < arr.length; j++) {
arr[j] +=( r / 14);
if (j + 1 <= (r % 14)) {
arr[j]++;
}
if (arr[j] % 2 == 0) {
sum += arr[j];
}
}
max = Math.max(max, sum);
}
System.out.println(max);
}
static class Scanner {
StringTokenizer st;
BufferedReader br;
public Scanner(InputStream s) {
br = new BufferedReader(new InputStreamReader(s));
}
public String next() throws IOException {
while (st == null || !st.hasMoreTokens())
st = new StringTokenizer(br.readLine());
return st.nextToken();
}
public int nextInt() throws IOException {
return Integer.parseInt(next());
}
public long nextLong() throws IOException {
return Long.parseLong(next());
}
public String nextLine() throws IOException {
return br.readLine();
}
public double nextDouble() throws IOException {
String x = next();
StringBuilder sb = new StringBuilder("0");
double res = 0, f = 1;
boolean dec = false, neg = false;
int start = 0;
if (x.charAt(0) == '-') {
neg = true;
start++;
}
for (int i = start; i < x.length(); i++)
if (x.charAt(i) == '.') {
res = Long.parseLong(sb.toString());
sb = new StringBuilder("0");
dec = true;
} else {
sb.append(x.charAt(i));
if (dec)
f *= 10;
}
res += Long.parseLong(sb.toString()) / f;
return res * (neg ? -1 : 1);
}
public boolean ready() throws IOException {
return br.ready();
}
}
}
| constant | 975_B. Mancala | CODEFORCES |
import java.util.Scanner;
public class TaxiDriversAndLyft2 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
long n = scanner.nextLong();
long m = scanner.nextLong();
long[] people = new long[(int) (n+m)];
int[] taxiDrivers = new int[(int) (n+m)];
for(int i = 0;i< (n+m); i++) {
people[i] = scanner.nextLong();
}
for(int i = 0;i< (n+m); i++) {
taxiDrivers[i] = scanner.nextInt();
}
int lastTaxiDriverIndex = -1;
long[] riderCountArray = new long[(int) (m)];
long[] a1 = new long[(int)n];
long[] b1 = new long[(int)m];
int j=0, k=0;
for(int i = 0;i< (n+m); i++) {
if(taxiDrivers[i] == 0) {
a1[j] = people[i];
j++;
}
else {
b1[k] = people[i];
k++;
}
}
int l = 0, q=0;
for(int i=0;i<j;i++) {
while ((l<m-1 && m>1) && Math.abs(a1[i] - b1[l]) > Math.abs(a1[i] - b1[l+1])) {
l++;
}
riderCountArray[l]++;
}
for(int i = 0;i< (m); i++) {
System.out.print(riderCountArray[i]+" ");
}
}
}
| linear | 1075_B. Taxi drivers and Lyft | CODEFORCES |
import java.io.*;
import java.util.*;
public class cf {
static class FastScanner {
BufferedReader br;
StringTokenizer st;
public FastScanner() {
try {
br = new BufferedReader(new InputStreamReader(System.in));
st = new StringTokenizer(br.readLine());
} catch (Exception e){e.printStackTrace();}
}
public String next() {
if (st.hasMoreTokens()) return st.nextToken();
try {st = new StringTokenizer(br.readLine());}
catch (Exception e) {e.printStackTrace();}
return st.nextToken();
}
public int nextInt() {return Integer.parseInt(next());}
public long nextLong() {return Long.parseLong(next());}
public double nextDouble() {return Double.parseDouble(next());}
public String nextLine() {
String line = "";
if(st.hasMoreTokens()) line = st.nextToken();
else try {return br.readLine();}catch(IOException e){e.printStackTrace();}
while(st.hasMoreTokens()) line += " "+st.nextToken();
return line;
}
}
public static void main(String[] args) {
FastScanner sc = new FastScanner();
PrintWriter pw = new PrintWriter(System.out);
int n = sc.nextInt();
pw.println(n/2+1);
pw.close();
}
} | constant | 964_A. Splits | CODEFORCES |
import java.util.Scanner;
public class Main{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
while(sc.hasNext()) {
int n=sc.nextInt();
String s=sc.next();
int sum=0;
for(int i=0;i<s.length();i++) {
if(s.charAt(i)=='+') {
sum++;
}
if(s.charAt(i)=='-'&&sum!=0) {
sum--;
}
}
System.out.println(sum);
}
}
} | linear | 1159_A. A pile of stones | CODEFORCES |
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;
import java.util.StringTokenizer;
public class CF_1029E_Tree_with_Small_Distances {
static ArrayList<Integer> adj[];
static int dist[];
static boolean visitParent[];
static int ans=0;
public static void main(String[] args) throws IOException {
Scanner sc = new Scanner(System.in);
int n =sc.nextInt();
adj=new ArrayList[n+1];
dist = new int[n+1];
visitParent = new boolean[n+1];
for(int i=0;i<=n;i++) adj[i]=new ArrayList<Integer>();
int max=0;
//first contribution
for(int i=1;i<n;i++){
int u = sc.nextInt(),v=sc.nextInt();
adj[u].add(v);
adj[v].add(u);
}
dist[1]=0;
dfs(1,1);
System.out.println(ans);
}
private static void dfs(int i , int j) {
// TODO Auto-generated method stub
boolean f = false;
for(int k=0;k<adj[i].size();k++){
int x = adj[i].get(k);
if(x!=j){
dist[x]=dist[i]+1;
dfs(x,i);
if(visitParent[x])
f=true;
}
}
//System.out.println(Arrays.toString(dist));
if(dist[i]>2&&!visitParent[j]&&!f&&!visitParent[i]){
visitParent[j]=true;
ans++;
for(int v=0;v<adj[i].size();v++){
}
}
}
static class Scanner
{
StringTokenizer st;
BufferedReader br;
public Scanner(InputStream s){ br = new BufferedReader(new InputStreamReader(s));}
public String next() throws IOException
{
while (st == null || !st.hasMoreTokens())
st = new StringTokenizer(br.readLine());
return st.nextToken();
}
public double nextDouble() throws IOException
{
String x = next();
StringBuilder sb = new StringBuilder("0");
double res = 0, f = 1;
boolean dec = false, neg = false;
int start = 0;
if(x.charAt(0) == '-')
{
neg = true;
start++;
}
for(int i = start; i < x.length(); i++)
if(x.charAt(i) == '.')
{
res = Long.parseLong(sb.toString());
sb = new StringBuilder("0");
dec = true;
}
else
{
sb.append(x.charAt(i));
if(dec)
f *= 10;
}
res += Long.parseLong(sb.toString()) / f;
return res * (neg?-1:1);
}
public int nextInt() throws IOException {return Integer.parseInt(next());}
public long nextLong() throws IOException {return Long.parseLong(next());}
public String nextLine() throws IOException {return br.readLine();}
public boolean ready() throws IOException {return br.ready(); }
}
}
| linear | 1029_E. Tree with Small Distances | CODEFORCES |