criyle/codenet-compile-errors huggingface dataset:
Language: C++

/**
 * code generated by JHelper
 * More info: https://github.com/AlexeyDmitriev/JHelper
 * @author
 */

#include <iostream>
#include <fstream>

#include <bits/stdc++.h>

#define int long long
#define REP(i, n) for (int i = 0, i##_len = (n); i < i##_len; ++i)
#define FOR(i, a, b) for (int i = (a), i##_len = (b); i <= i##_len; ++i)
#define REV(i, a, b) for (int i = (a); i >= (b); --i)
#define CLR(a, b) memset((a), (b), sizeof(a))
#define DUMP(x) cout << #x << " = " << (x) << endl;
#define INF 1001001001001001001ll
#define fcout cout << fixed << setprecision(12)

using namespace std;

typedef pair<int, int> P;

class APair {
public:
    void solve(std::istream& cin, std::ostream& cout) {
        int k, ans;
        cin >> k;

        if(k%2==0){
            ans = (k/2)*(k/2);
        }else{
            ans = ((k/2)+1)*(k/2);
        }
        cout << ans << endl;
    }
};


int main() {
	APair solver;
	std::istream& in(std::cin);
	std::ostream& out(std::cout);
	solver.solve(in, out);
	return 0;
}


Compiler output:
cc1plus: error: '::main' must return 'int'
Language: C++

#include<iostream>
#include<algorithm>
#include<cmath>
#include<vector>
#include<map>
#include<set>
#include<string>
#include<queue>
#include<stack>
#include<iomanip>

#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);

using namespace std;

#define debug(x) cout<<(#x)<<"="<<(x)<<", ";
#define debug1(x) debug(x) cout<<'\n';
#define debug2(x1, x2) debug(x1) debug(x2) cout<<'\n';
#define debug3(x1, x2, x3) debug(x1) debug(x2) debug(x3) cout<<'\n';
#define debug4(x1, x2, x3, x4) debug(x1) debug(x2) debug(x3) debug(x4) cout<<'\n';
#define debug5(x1, x2, x3, x4, x5) debug(x1) debug(x2) debug(x3) debug(x4) debug(x5) cout<<'\n';

#define fcout cout<<fixed<<setprecision(15)
#define repp(i,j,k) for(int i=j; i<k; ++i)
#define rep(i,j) repp(i,0,j)
#define rrep(i,j,k) for(int i=j; i>=k; --i)
#define all(x) (x).begin(), (x).end()
#define sort(x) sort(x.begin(), x.end())
#define lb(x,val) lower_bound(x.begin(), x.end(), val)
#define ub(x,val) upper_bound(x.begin(), x.end(), val)
#define pb(x) emplace_back(x);

typedef long long int lli;
typedef pair<int,int> pii;
typedef pair<lli,lli> pll;
typedef vector<int> vi;
typedef vector<lli> vl;
typedef tuple<int, int, lli> tiil;

//const lli M=998244353ll;
const lli M=1000000007ll;
const double D=1.0;

int main(){
	fast_io
	int k; cin>>k;
	int e=0; o=0;
	repp(i,1,k+1){
		if(i&1) o++;
		else e++;	
	}
	cout<<(o*e);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:47:18: error: 'o' was not declared in this scope
   47 |         int e=0; o=0;
      |                  ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i = 0; i < (n); i++)
#define rep2(i, a, b) for(int i = (a); i < (b); i++)
typedef long long ll;

int main() {
   int k;
   cin >> k;

   int ans = (k % 2 == 0) ? pow(n/2, 2) : (n/2) * (n/2 + 1);

   cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:33: error: 'n' was not declared in this scope
   11 |    int ans = (k % 2 == 0) ? pow(n/2, 2) : (n/2) * (n/2 + 1);
      |                                 ^
Language: C

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define FOR(i, a, b) for(int i=(a);i<(b);++i)
#define rep(i, n) FOR(i, 0, n)
#define whole(x) (x).begin(),(x).end()
#define UNIQUE(v) v.erase(unique(v.begin(), v.end()), v.end())
using P = pair<int, int>;
#define debug(var) cerr << "[" << #var << "] " << var << endl
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
const ll mod = 1000000007;
const int dx[] = {-1,0,1,0};
const int dy[] = {0,-1,0,1};

int main()
{
  int k;
  cin >> k;
  cout << k/2*(k-k/2) << endl;
  return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int N;
  cin >> n;
  cout << (N/2)*((N+1)/2);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'n' was not declared in this scope
    6 |   cin >> n;
      |          ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int k;
  cin >> k;
  if(k&2==0){
    cout << k*k/4 << endl;
  }
  else{
    cout << (k+1)*(K-1)/4  << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:20: error: 'K' was not declared in this scope
   11 |     cout << (k+1)*(K-1)/4  << endl;
      |                    ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
  int k;
  cin >> k;
  
  cout << (k / 2) * ((k + 1) / 2));
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:34: error: expected ';' before ')' token
    8 |   cout << (k / 2) * ((k + 1) / 2));
      |                                  ^
      |                                  ;
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
  	int n;cin >> n;
  	cout << (n/2)*(n-n/2)
  	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:30: error: expected ';' before 'return'
    6 |         cout << (n/2)*(n-n/2)
      |                              ^
      |                              ;
    7 |         return 0;
      |         ~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
int k;
  cin >> k;
 if(k%2 != 0){
   int t = (k-1)/2;
   int d = (k+1)/2;
   cout << d*t << endl;
 }
  else cout << (k/2)*(k/2) << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:12:36: error: expected '}' at end of input
   12 |   else cout << (k/2)*(k/2) << endl;
      |                                    ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for(i=a;i<=n;i++)
#define ll long long
int main(){
  ll i,j;
  ll N,K;
  ll countMod[200001];
  ll sum = 0;
    
  cin >> N >> K ;
  rep(i,0,K-1)
   countMod[i] = 0;
  
  rep(i,1,N){
    if(2*i%K == 0)
      countMod[i%K] += 1;
  }
  rep(i,0,K-1)
    sum += pow(countMod[i],3);
 
　cout << sum << endl;  
}

Compiler output:
a.cc:22:1: error: extended character 　 is not valid in an identifier
   22 | 　cout << sum << endl;
      | ^
a.cc: In function 'int main()':
a.cc:22:1: error: '\U00003000cout' was not declared in this scope
   22 | 　cout << sum << endl;
      | ^~~~~~
Language: Java

#include<iostream>
using namespace std;

int main()
{
	int k;	cin >> k;
	if(k % 2 == 0)
		cout << (k / 2) * (k / 2) << endl;
	else
		cout << (k / 2) * (k / 2 + 1) << endl;
}

Compiler output:
Main.java:1: error: illegal character: '#'
#include<iostream>
^
Main.java:1: error: class, interface, enum, or record expected
#include<iostream>
        ^
Main.java:6: error: not a statement
	int k;	cin >> k;
	      	    ^
Main.java:8: error: not a statement
		cout << (k / 2) * (k / 2) << endl;
		                          ^
Main.java:10: error: not a statement
		cout << (k / 2) * (k / 2 + 1) << endl;
		                              ^
Main.java:4: error: unnamed classes are a preview feature and are disabled by default.
int main()
^
  (use --enable-preview to enable unnamed classes)
6 errors
Language: C++

#include<bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

int main() {

    ios::sync_with_stdio(false);
	
	int n, r;
	
	if(n%2 == 0){
		r = pow(n/2, 2);
		cout << r << endl;
	}
	else{
		r=((n-1)/2)*(n-(n-1)/2));
		cout << r << endl;
	}
	
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:40: error: expected ';' before ')' token
   18 |                 r=((n-1)/2)*(n-(n-1)/2));
      |                                        ^
      |                                        ;
Language: C

#include <stdio.h>
int main(){
	int x,par,impar;
	scanf("%d", &x);
	if(x%2){
		impar = x/2+1;
		par = x/2;
	}
	else {
		par = x/2;
		impar = pares;
	}
	printf("%d\n", impar*par);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:25: error: 'pares' undeclared (first use in this function); did you mean 'par'?
   11 |                 impar = pares;
      |                         ^~~~~
      |                         par
main.c:11:25: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int k;
  cin>>k;
  if(k&2==0) cout<<k*k/4<<endl;
  else<<k*k/4+k/2<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: expected primary-expression before '<<' token
    8 |   else<<k*k/4+k/2<<endl;
      |       ^~
Language: C++

def Pair(k):

    return int((k / 2)**2) if k % 2 == 0 else int((k // 2) * (k // 2 + 1))

def main():
    k = int(input())
    print(Pair(k))

if __name__ == '__main__':
    main()

Compiler output:
a.cc:9:16: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
    9 | if __name__ == '__main__':
      |                ^~~~~~~~~~
a.cc:1:1: error: 'def' does not name a type
    1 | def Pair(k):
      | ^~~
Language: C

#include <stdio.h>
int main()
{
  int a;
  scanf("%d",&a);
  if (a%2 != 0)
  	printf("%d",(a/2)*(a/2+1));
  else
    printf("%d",(a/2)*(a/2))
}

Compiler output:
main.c: In function 'main':
main.c:9:29: error: expected ';' before '}' token
    9 |     printf("%d",(a/2)*(a/2))
      |                             ^
      |                             ;
   10 | }
      | ~
Language: C++

#include<stdio.h>
int main() { 
  int k; 
  scanf(”%d” , &k);
  printf(”%d\n” , (k / 2)∗((k + 1) / 2)); 
}


Compiler output:
a.cc:4:9: error: extended character ” is not valid in an identifier
    4 |   scanf(”%d” , &k);
      |         ^
a.cc:4:11: error: extended character ” is not valid in an identifier
    4 |   scanf(”%d” , &k);
      |           ^
a.cc:5:10: error: extended character ” is not valid in an identifier
    5 |   printf(”%d\n” , (k / 2)∗((k + 1) / 2));
      |          ^
a.cc:5:13: error: stray '\' in program
    5 |   printf(”%d\n” , (k / 2)∗((k + 1) / 2));
      |             ^
a.cc:5:14: error: extended character ” is not valid in an identifier
    5 |   printf(”%d\n” , (k / 2)∗((k + 1) / 2));
      |              ^
a.cc:5:26: error: extended character ∗ is not valid in an identifier
    5 |   printf(”%d\n” , (k / 2)∗((k + 1) / 2));
      |                          ^
a.cc: In function 'int main()':
a.cc:4:9: error: '\U0000201d' was not declared in this scope
    4 |   scanf(”%d” , &k);
      |         ^
a.cc:4:11: error: 'd\U0000201d' was not declared in this scope
    4 |   scanf(”%d” , &k);
      |           ^~
a.cc:5:12: error: 'd' was not declared in this scope
    5 |   printf(”%d\n” , (k / 2)∗((k + 1) / 2));
      |            ^
a.cc:5:26: error: expected ')' before '\U00002217'
    5 |   printf(”%d\n” , (k / 2)∗((k + 1) / 2));
      |         ~                ^
      |                          )
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b;
  cin >> a ;
  if(a%2==)cout << (a/2) * (a/2) << endl;
  else cout << (a/2) * (a/2+1) <<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:11: error: expected primary-expression before ')' token
    7 |   if(a%2==)cout << (a/2) * (a/2) << endl;
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define intput(i) cout << i << endl
#define ll long long
#define stringput(s) cout << (string)(s) << endl

int main(){
  int k;
  cin >> k;
  int ans =((k+1)/2)*(k/2)
    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:5: error: expected ',' or ';' before 'cout'
   12 |     cout << ans << endl;
      |     ^~~~
Language: Java

import java.util.Scanner;
import java.util.Arrays;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int num = sc.nextInt();
    if(n % 2 == 0){
      System.out.println(n * n / 4);
    }else{
      System.out.println((n + 1) * (n - 1) / 4);
    }
    
  }
}

Compiler output:
Main.java:7: error: cannot find symbol
    if(n % 2 == 0){
       ^
  symbol:   variable n
  location: class Main
Main.java:8: error: cannot find symbol
      System.out.println(n * n / 4);
                         ^
  symbol:   variable n
  location: class Main
Main.java:8: error: cannot find symbol
      System.out.println(n * n / 4);
                             ^
  symbol:   variable n
  location: class Main
Main.java:10: error: cannot find symbol
      System.out.println((n + 1) * (n - 1) / 4);
                          ^
  symbol:   variable n
  location: class Main
Main.java:10: error: cannot find symbol
      System.out.println((n + 1) * (n - 1) / 4);
                                    ^
  symbol:   variable n
  location: class Main
5 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
 	int K;
  	cin >> K;
  
  	if (K % 2 == 0) {
      cout << (K / 2)**2 << endl;
    } else {
      cout << ((K + 1) / 2) * ((K + 1) / 2 - 1) << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:23: error: invalid type argument of unary '*' (have 'int')
    9 |       cout << (K / 2)**2 << endl;
      |                       ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
 	int K;
  	cin >> K;
  
  	if (K % 2 == 0) {
      cout << (K / 2)** << endl;
    } else {
      cout << ((K + 1) / 2) * ((K + 1) / 2 - 1) << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:25: error: expected primary-expression before '<<' token
    9 |       cout << (K / 2)** << endl;
      |                         ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
int k;
  cin >> k;
    cout << (k/2)*(k+1)/2
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:26: error: expected ';' before '}' token
    7 |     cout << (k/2)*(k+1)/2
      |                          ^
      |                          ;
    8 | }
      | ~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
int k;
  cin >> k
    cout << k*(k+1)/4;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:11: error: expected ';' before 'cout'
    6 |   cin >> k
      |           ^
      |           ;
    7 |     cout << k*(k+1)/4;
      |     ~~~~
Language: Java

mport java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int k = sc.nextInt();
		sc.close();

		int k2 = k / 2;
		System.out.println(k2 * (k - k2));
	}
}


Compiler output:
Main.java:1: error: class, interface, enum, or record expected
mport java.util.Scanner;
^
1 error
Language: C

#include<stdio.h>
#include<stdlib.h>
#include<stdlimit.h>

int main(){
	int k, ret;
	scanf("%d\n", &k);
	if(k%2){
		ret = ((k+1) / 2) * (k / 2);
	} else {
		ret = (k / 2) * (k / 2);
	}
	printf("%d\n", ret);
	return 0;
}


Compiler output:
main.c:3:9: fatal error: stdlimit.h: No such file or directory
    3 | #include<stdlimit.h>
      |         ^~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;

public class　Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int k = sc.nextInt();
		if(k%2==0) {
			System.out.println((k/2)*(k/2));
		}else {
			System.out.println((k/2+1)*(k/2));
		}
		sc.close();
	}
}

Compiler output:
Main.java:3: error: illegal character: '\u3000'
public class?Main {
            ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
	double x;cin>>x;
  	cout << (ll)floor(x/2)*ceil(x/2);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:18: error: 'll' was not declared in this scope
    6 |         cout << (ll)floor(x/2)*ceil(x/2);
      |                  ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int a,ans;
  cin>>a>>b;
  if(a%2)cout<<(a*a/4)<<"\n";
  else cout<<(a*a-1)/4<<"\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:11: error: 'b' was not declared in this scope
    6 |   cin>>a>>b;
      |           ^
Language: C++

#include<bits.stdc++.h>
using namespace std;

int main(){
  int n;
  cin >> n;
  
  cout << (n/2)*(n-n/2) << endl;
  return 0;
}

Compiler output:
a.cc:1:9: fatal error: bits.stdc++.h: No such file or directory
    1 | #include<bits.stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

int main() {
    int k;
    cin >> k;
    if(k%2==1){
        cout << (k/2+1)*(k/2) << endl;
    }
    else{
        cout << k*k/4 << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin >> k;
      |     ^~~
a.cc:5:9: error: 'cout' was not declared in this scope
    5 |         cout << (k/2+1)*(k/2) << endl;
      |         ^~~~
a.cc:5:34: error: 'endl' was not declared in this scope
    5 |         cout << (k/2+1)*(k/2) << endl;
      |                                  ^~~~
a.cc:8:9: error: 'cout' was not declared in this scope
    8 |         cout << k*k/4 << endl;
      |         ^~~~
a.cc:8:26: error: 'endl' was not declared in this scope
    8 |         cout << k*k/4 << endl;
      |                          ^~~~
Language: Java

import java.util.Scanner

public class Main{
  pubic static void main(String[] args){
  Scanner sc = new Scanner(System.in);
  int k = sc.nextInt();
  int odd = 0;
  int even =0;
  
  for(int i=1;i<=k;i++){
    if(i%2==0){
      even++;
    }else{
      odd++;  
    }
  }
  System.out.print(even*odd)
  }
}

Compiler output:
Main.java:1: error: ';' expected
import java.util.Scanner
                        ^
Main.java:4: error: <identifier> expected
  pubic static void main(String[] args){
       ^
Main.java:17: error: ';' expected
  System.out.print(even*odd)
                            ^
3 errors
Language: C++

#include <bits/stdc++.h>
#include <math.h>
#include <cmath>
 
using namespace std;
using std::cout;
using ll =long long;
bool is_int_lround(double x){
  return std::lround(x)==x;
}
int ketasuu(int x){
  int n=0;
  while(x>0){
    x /=10 ;
    n ++;
  }
  return n;
}
ll gcd11(ll x, ll y){
  long long a= max(x,y), b=min(x,y), c=a%b;
  while( c!=0){
    a =b;
    b =c;
    c = a%b;
  }
  return b;
}

int ab(int x, int y){
  if(x>=y){
    return x-y;
  }
  else if(y>x){
    return y-x;
  }
}
int main(){
  int K;
  cin>>K;
  cout<< K%2 *(N-K%2)<<endl;
 

}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:16: error: 'N' was not declared in this scope
   40 |   cout<< K%2 *(N-K%2)<<endl;
      |                ^
a.cc: In function 'int ab(int, int)':
a.cc:36:1: warning: control reaches end of non-void function [-Wreturn-type]
   36 | }
      | ^
Language: C++

#include <bits/stdc++.h>
#define INF 1000000000
using namespace std;

int main() {

int H;
  cin>>H;
cout<<(W/2)*(W-(W/2))<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:8: error: 'W' was not declared in this scope
    9 | cout<<(W/2)*(W-(W/2))<<endl;
      |        ^
Language: C++

k=int(input())
A,B=0,0
for i in range(1,k+1):
    if i%2==0:
        A+=1
    else:
        B+=1
print(A*B)

Compiler output:
a.cc:1:1: error: 'k' does not name a type
    1 | k=int(input())
      | ^
Language: C++

K=int(input())
A,B=0,0
for i in range(1,K+1):
    if i%2==0:
        A+=1
    else:
        B+=1
print(A*B)

Compiler output:
a.cc:1:1: error: 'K' does not name a type
    1 | K=int(input())
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
 　int K;
  cin >> K;
  if(K%2==0){
    cout << (K/2)*(K/2) << endl;
  }else{
    cout << (K/2)*(K/2+1) << endl;
  }
}


Compiler output:
a.cc:5:2: error: extended character 　 is not valid in an identifier
    5 |  　int K;
      |  ^
a.cc: In function 'int main()':
a.cc:5:2: error: '\U00003000int' was not declared in this scope
    5 |  　int K;
      |  ^~~~~
a.cc:6:10: error: 'K' was not declared in this scope
    6 |   cin >> K;
      |          ^
Language: C++

#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;
    cout (n + 1) / 2 * n / 2 << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: no match for call to '(std::ostream {aka std::basic_ostream<char>}) (int)'
    7 |     cout (n + 1) / 2 * n / 2 << endl;
      |     ~~~~~^~~~~~~
Language: C

#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <limits.h>
#include <math.h>
int acs(const void *a, const void *b){return *(int*)a - *(int*)b;} /* 1,2,3,4.. */
int des(const void *a, const void *b){return *(int*)b - *(int*)a;} /* 8,7,6,5.. */
int cmp_char(const void *a, const void *b){return *(char*)a - *(char*)b;} /* a,b,c,d.. */
int cmp_str(const void *a, const void *b){return strcmp(*(const char **)a, *(const char **)b);} /* aaa,aab.. */
#define min(a,b) (a < b ? a: b)
#define max(a,b) (a > b ? a: b)
#define rep(i, l, r) for (int i = l; i < r; i++)
#define MAX 100001
#define MOD 1000000007

typedef long long int lli;

int main(void) {
  int K;
  scanf("%d", &K);
  int even = K / 2;
  int odd = k - even;
  int ans = even * odd;
  printf("%d\n", ans);
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:24:13: error: 'k' undeclared (first use in this function)
   24 |   int odd = k - even;
      |             ^
main.c:24:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

\#include<bits/stdc++.h>
using namespace std;

int main() {
	cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
	int k; cin>>k;
	cout << k/2*(k-k/2) << endl;
	return 0;
}


Compiler output:
a.cc:1:1: error: stray '\' in program
    1 | \#include<bits/stdc++.h>
      | ^
a.cc:1:2: error: stray '#' in program
    1 | \#include<bits/stdc++.h>
      |  ^
a.cc:1:3: error: 'include' does not name a type
    1 | \#include<bits/stdc++.h>
      |   ^~~~~~~
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
      |         ^~~
a.cc:5:21: error: 'cout' was not declared in this scope
    5 |         cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
      |                     ^~~~
a.cc:5:34: error: 'ios_base' has not been declared
    5 |         cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
      |                                  ^~~~~~~~
a.cc:7:32: error: 'endl' was not declared in this scope
    7 |         cout << k/2*(k-k/2) << endl;
      |                                ^~~~
Language: Java

import java.util.*;
public class Main {
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    
    int k = sc.nextInt();
    int kMinus = k - 1;
    
    if (k % 2 == 0) {
      System.out.println((k / 2) * (k / 2));
    } else {
      System.out.println((kMinus / 2) * (kMinus / 2 + 1));
  }
}

Compiler output:
Main.java:14: error: reached end of file while parsing
}
 ^
1 error
Language: Java

import java.util.*;
public class Main {
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    
    int k = sc.nextInt();
    
    if (k % 2 == 0) {
      System.out.println((k / 2) * (k / 2));
    } else {
      int kMinus = k - 1;
      System.out.println((kMinus / 2) * (kMinus / 2 + 1));
  }
}

Compiler output:
Main.java:14: error: reached end of file while parsing
}
 ^
1 error
Language: C++

https://t.pia.jp/pia/ticketInformation.do?eventCd=1945666&rlsCd=001&lotRlsCd=

Compiler output:
a.cc:1:1: error: 'https' does not name a type
    1 | https://t.pia.jp/pia/ticketInformation.do?eventCd=1945666&rlsCd=001&lotRlsCd=
      | ^~~~~
Language: C++

#include <iostream>
#include <algorithm>
#include <vector> //動的配列
#include <string>
#include <list> //双方向リスト
#include <map> //連想配列
#include <set> //集合
#include <stack>
#include <queue>
#include <deque>
#include <cmath>
#include <bitset>
#include <numeric>
#include <tuple>




typedef long long ll;


using namespace std;

typedef pair<int, int> P;
#define FOR(i,a,b) for(int i=(int)(a) ; i < (int) (b) ; ++i )
#define rep(i,n) FOR(i,0,n)
#define sz(x) int(x.size())


template <class T>ostream &operator<<(ostream &o,const vector<T>&v)
{o<<"{";for(int i=0;i<(int)v.size();i++)o<<(i>0?", ":"")<<v[i];o<<"}";return o;}

// n次元配列の初期化。第２引数の型のサイズごとに初期化していく。
template<typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val){
    std::fill( (T*)array, (T*)(array+N), val );
}

//小さい順から取り出すヒープ
//priority_queue<ll, vector<ll>, greater<ll> > pque1;

int gcd(int x,int y){
    if (y==0) return x;
    else return gcd(y,x%y);
}

int main(){
    int n;
  	cin>>n;
  	ans=(n/2)*((n+1)/2);
    
    cout<<ans;
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:50:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   50 |         ans=(n/2)*((n+1)/2);
      |         ^~~
      |         abs
Language: C++

#include<iostream>
using namespace std ;
int main () {
int z,x,k,m,y;
cin>>k;
z=k/2;
m=z*z;
x=(k+1)/2;
y=x*(x-1);
if(k%2==0){
      cout<<m;
  }
else { 
      cout<<y;
}
return 0;
)

Compiler output:
a.cc: In function 'int main()':
a.cc:17:1: error: expected primary-expression before ')' token
   17 | )
      | ^
a.cc:17:2: error: expected '}' at end of input
   17 | )
      |  ^
a.cc:3:13: note: to match this '{'
    3 | int main () {
      |             ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
int k;
cin >> k;
if(k%2 == 0) cout << (k/2)^2 << endl;
if(k%2 == 1) cout << (k/2)*((k/2)+1) << endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:30: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    7 | if(k%2 == 0) cout << (k/2)^2 << endl;
      |                            ~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int A;
  cin >> A;
  int B = A/2
  if(A%2==0){
	cout << B*B << endl;
  }
  else {
    cout << B*(B+1) << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: expected ',' or ';' before 'if'
    7 |   if(A%2==0){
      |   ^~
a.cc:10:3: error: 'else' without a previous 'if'
   10 |   else {
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int A;
  cin >> A;
  int B = A/2
  if(A%2==0){
	cout << B*B << endl;
  }
  else {
    cout << B*(B+1)
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: expected ',' or ';' before 'if'
    7 |   if(A%2==0){
      |   ^~
a.cc:10:3: error: 'else' without a previous 'if'
   10 |   else {
      |   ^~~~
a.cc:11:20: error: expected ';' before '}' token
   11 |     cout << B*(B+1)
      |                    ^
      |                    ;
   12 |   }
      |   ~
Language: C++

use std::io::*;
use std::str::*;
#[allow(unused_imports)]
use std::collections::*;

fn main() {
    let k : usize = read();
    let odd = k / 2 + k % 2;
    let even = k / 2;
    println!("{}", odd * even);
}

fn read<T: FromStr>() -> T {
    let cin = stdin();
    let cin = cin.lock();
    let s: String = cin 
        .bytes() // Bytes
        .map(|c| c.expect("failed reading char") as char)
        .skip_while(|c| c.is_whitespace()) // c が whitespace である限り skip
        .take_while(|c| !c.is_whitespace()) // c が whitespace でない限り要素を返す
        .collect();
    s.parse().ok().expect("failed parsing")
}


Compiler output:
a.cc:3:2: error: invalid preprocessing directive #[
    3 | #[allow(unused_imports)]
      |  ^
a.cc:1:1: error: 'use' does not name a type
    1 | use std::io::*;
      | ^~~
a.cc:2:1: error: 'use' does not name a type
    2 | use std::str::*;
      | ^~~
a.cc:4:1: error: 'use' does not name a type
    4 | use std::collections::*;
      | ^~~
a.cc:6:1: error: 'fn' does not name a type
    6 | fn main() {
      | ^~
a.cc:13:1: error: 'fn' does not name a type
   13 | fn read<T: FromStr>() -> T {
      | ^~
Language: C++

#include <bits/stdc++.h>


#include <cstdlib>  // abs() for integer 絶対値求めやつ


#include <cmath>    // abs() for float, and fabs()


#include <algorithm>


 


#define rep(i,n) for(int i = 0; i< (n);i++)


#define SORT(a) sort((a).begin(),(a).end());


#define che(a,string) cout<<string<<":"<<(a)<<endl;


#define ch(a,string) cout<<string<<":"<<(a)<<" ";


using namespace std;


typedef pair<int,int> P;








int main(){

	int k; cin >> k ;
	int odd,even;
	odd= (k+1)/2;
	even =k/2;
	cout << odd*even<<endl;
	


Compiler output:
a.cc: In function 'int main()':
a.cc:46:32: error: expected '}' at end of input
   46 |         cout << odd*even<<endl;
      |                                ^
a.cc:40:11: note: to match this '{'
   40 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
int N;
  cin>>N;
  if(N%2==0)
    cout<<A*A/4<<endl;
  else cout<<(A/2*(A/2+1))<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: 'A' was not declared in this scope
    8 |     cout<<A*A/4<<endl;
      |           ^
a.cc:9:15: error: 'A' was not declared in this scope
    9 |   else cout<<(A/2*(A/2+1))<<endl;
      |               ^
Language: C++

#include <iostream>
using namespace std;

int main() {
  int K;
  cin >> K;
  
  if(K%==0) cout << K*K/4 << endl;
  else cout << K/2 * (K/2+1) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: expected primary-expression before '=' token
    8 |   if(K%==0) cout << K*K/4 << endl;
      |         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;

int main() {
    int K;
    cin >> K;
    cout << (k/2) * (K-K/2) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:14: error: 'k' was not declared in this scope
   10 |     cout << (k/2) * (K-K/2) << endl;
      |              ^
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <stack>
#include <queue>

using namespace std;

int main() {
    int K;
    cin >> K;
    K /= 2;
    if (K % 2 == 0) {
        cout << pow(K, 2.0) << endl;
    } else {
        int K2;
        K2 = K + 1;
        cout << K * K2 << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: 'pow' was not declared in this scope
   14 |         cout << pow(K, 2.0) << endl;
      |                 ^~~
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <stack>
#include <queue>

using namespace std;

int main() {
    int K;
    cin >> K;
    if (K % 2 == 0) {
        cout << pow(K / 2, 2.0) << endl;
    } else {
        int K2;
        K /= 2;
        K2 = K + 1;
        cout << K * K2 << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:17: error: 'pow' was not declared in this scope
   13 |         cout << pow(K / 2, 2.0) << endl;
      |                 ^~~
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <stack>
#include <queue>

using namespace std;

int main() {
    int K;
    cin >> K;
    if (K % 2 == 0) {
        cout << pow(K / 2, 2) << endl;
    } else {
        int K2;
        K /= 2;
        K2 = K + 1;
        cout << K * K2 << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:17: error: 'pow' was not declared in this scope
   13 |         cout << pow(K / 2, 2) << endl;
      |                 ^~~
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <stack>
#include <queue>

using namespace std;

int main() {
    int K;
    cin >> K;
    if (K % 2 == 0) {
        cout << pow((K / 2), 2) << endl;
    } else {
        int K2;
        K /= 2;
        K2 = K + 1;
        cout << K * K2 << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:17: error: 'pow' was not declared in this scope
   13 |         cout << pow((K / 2), 2) << endl;
      |                 ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
int k;
  cin>>k;
  if(n%2==0){
    cout<<n/2*n/2<<endl;
  }
  else{
    cout<<n/2*(n/2+1)<<endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:6: error: 'n' was not declared in this scope
    7 |   if(n%2==0){
      |      ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int A;
  cin >> A
  if(A % 2 == 0){
  cout << A*A/4;
  }else{
    D = A / 2;
  cout << D * (D+1);
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:11: error: expected ';' before 'if'
    6 |   cin >> A
      |           ^
      |           ;
    7 |   if(A % 2 == 0){
      |   ~~       
a.cc:9:4: error: 'else' without a previous 'if'
    9 |   }else{
      |    ^~~~
a.cc:10:5: error: 'D' was not declared in this scope
   10 |     D = A / 2;
      |     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int k;
  if(k%2==0){
    cout<<k/2*k/2<<endl;
  }else{
    cout<<k/2*(k/2+1)<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:2: error: expected '}' at end of input
   10 | }
      |  ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: Java

import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        System.out.prrintln(k/2*(k+1)/2);
    }
}

Compiler output:
Main.java:7: error: cannot find symbol
        System.out.prrintln(k/2*(k+1)/2);
                  ^
  symbol:   method prrintln(int)
  location: variable out of type PrintStream
1 error
Language: C

k = int(input())
count1 = 0
count2 = 0
for i in range(k):
    if i % 2 == 0:
        count1 += 1
    else:
        count2 += 1
print(count1 * count2)

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | k = int(input())
      | ^
main.c:1:1: error: type defaults to 'int' in declaration of 'k' [-Wimplicit-int]
main.c:1:5: error: expected expression before 'int'
    1 | k = int(input())
      |     ^~~
Language: C

#include <stdoi.h>
int main(){
  int a=0;
  scanf("%d",&a);
  if(0==a%2)a=(a/2)*(a/2);
    else a=(a/2)*((a/2)+1);
  printf("%d",a);
  return 0;
}

Compiler output:
main.c:1:10: fatal error: stdoi.h: No such file or directory
    1 | #include <stdoi.h>
      |          ^~~~~~~~~
compilation terminated.
Language: C

#include <stdoi.h>
int main(){
  int a;
  scanf("%d",&a);
  if(0==a%2)a=(a/2)*(a/2);
    else a=(a/2)*((a/2)+1);
  printf("%d",a);
  return 0;
}

Compiler output:
main.c:1:10: fatal error: stdoi.h: No such file or directory
    1 | #include <stdoi.h>
      |          ^~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {

int K;
  cin >>K;
  if(K%2==0){
    cout << (K/2)**2;
  }
  else if(K%2==1){
    cout <<((K/2)+1)*(K/2);
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:19: error: invalid type argument of unary '*' (have 'int')
    9 |     cout << (K/2)**2;
      |                   ^~
Language: Java

import java.util.*;
public class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      	int k = sc.nextInt();
      int x = (int) k/2;
      int y = x*2
	  if(y == k)System.out.println(k*k/4);
      else System.out.println((k-1)*(k+1)/4);
      sc.close();
    }
}


Compiler output:
Main.java:7: error: ';' expected
      int y = x*2
                 ^
1 error
Language: Java

import java util.*;
public class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      	int k = sc.nextInt();
      int x = (int) k/2;
	  if(x == k)System.out.println(k*k/4);
      else System.out.println((k-1)*(k+1)/4);
      sc.close();
    }
}

Compiler output:
Main.java:1: error: '.' expected
import java util.*;
           ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
  int k;
  cin >> k;
  
  int c = 0;
	for(int x = 1; i <= k;++x){
  		for(int i = 1; i <= k; ++i){
		    if((x+i) % 2 == 1) ++c;
  		}
    }  
  
  cout << c << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:24: error: 'i' was not declared in this scope
    9 |         for(int x = 1; i <= k;++x){
      |                        ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
  int k;
  cin >> k;
  
  int c = 0;
	for(int x = 1; i <= k;++x){
  		for(int i = 1; i <= k; ++i){
		    if((x+i) % 2 == 1) ++c
  		}
    }  
  
  cout << c << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:24: error: 'i' was not declared in this scope
    9 |         for(int x = 1; i <= k;++x){
      |                        ^
a.cc:11:43: error: expected ';' before '}' token
   11 |                     if((x+i) % 2 == 1) ++c
      |                                           ^
      |                                           ;
   12 |                 }
      |                 ~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main()
{
  int k;
  cin >> k;
  int even = 0, ood = 0;
  for (int i = 1; i <= k; i++) (i & 1) ? ++odd : ++even;
  cout << (odd * even) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:44: error: 'odd' was not declared in this scope; did you mean 'ood'?
   10 |   for (int i = 1; i <= k; i++) (i & 1) ? ++odd : ++even;
      |                                            ^~~
      |                                            ood
a.cc:11:12: error: 'odd' was not declared in this scope; did you mean 'ood'?
   11 |   cout << (odd * even) << endl;
      |            ^~~
      |            ood
Language: C++

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) FOR(i,0,n)
#define FOR(i,a,b) for(int i=(a),i##Len_=(b);i<i##Len_;i++)

int main()
{
    int K;
    cin >> K;
    int cnt = 0;
    for(int j = 1; j <= K; j += 2)
    {
        for(int l = 2; l <= K; l+= 2)
        {
            cnt++;
        }
    }

    cout << cnt << endl;
aB

}



Compiler output:
a.cc: In function 'int main()':
a.cc:21:1: error: 'aB' was not declared in this scope
   21 | aB
      | ^~
Language: C++

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) FOR(i,0,n)
#define FOR(i,a,b) for(int i=(a),i##Len_=(b);i<i##Len_;i++)

int main()
{
    int K;
    cin >> 　K;
    int cnt = 0;
    for(int j = 1; j <= K; j += 2)
    {
        for(int l = 2; l <= K; l+= 2)
        {
            cnt++;
        }
    }

    cout << cnt << endl;
aB

}



Compiler output:
a.cc:10:12: error: extended character 　 is not valid in an identifier
   10 |     cin >> 　K;
      |            ^
a.cc: In function 'int main()':
a.cc:10:12: error: '\U00003000K' was not declared in this scope
   10 |     cin >> 　K;
      |            ^~~
a.cc:21:1: error: 'aB' was not declared in this scope
   21 | aB
      | ^~
Language: C++

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) FOR(i,0,n)
#define FOR(i,a,b) for(int i=(a),i##Len_=(b);i<i##Len_;i++)

int main()
{
    int K;
    cin >> 　K;
    int cnt = 0;
    for(int j = 1 j <= K; j += 2)
    {
        for(int l = 2 l <= K; l+= 2)
        {
            cnt++;
        }
    }

    cout << cnt << endl;


}



Compiler output:
a.cc:10:12: error: extended character 　 is not valid in an identifier
   10 |     cin >> 　K;
      |            ^
a.cc: In function 'int main()':
a.cc:10:12: error: '\U00003000K' was not declared in this scope
   10 |     cin >> 　K;
      |            ^~~
a.cc:12:18: error: expected ';' before 'j'
   12 |     for(int j = 1 j <= K; j += 2)
      |                  ^~
      |                  ;
a.cc:14:22: error: expected ';' before 'l'
   14 |         for(int l = 2 l <= K; l+= 2)
      |                      ^~
      |                      ;
Language: C++

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) FOR(i,0,n)
#define FOR(i,a,b) for(int i=(a),i##Len_=(b);i<i##Len_;i++)

int main()
{
    int K;
    cin >> 　K;
    int cnt = 0;
    for(int j = 1 j <= K; j += 2)
    {
        for(int l = 2 l <= K l+= 2)
        {
            cnt++;
        }
    }

    cout << cnt << endl;


}



Compiler output:
a.cc:10:12: error: extended character 　 is not valid in an identifier
   10 |     cin >> 　K;
      |            ^
a.cc: In function 'int main()':
a.cc:10:12: error: '\U00003000K' was not declared in this scope
   10 |     cin >> 　K;
      |            ^~~
a.cc:12:18: error: expected ';' before 'j'
   12 |     for(int j = 1 j <= K; j += 2)
      |                  ^~
      |                  ;
a.cc:14:22: error: expected ';' before 'l'
   14 |         for(int l = 2 l <= K l+= 2)
      |                      ^~
      |                      ;
a.cc:14:29: error: expected ';' before 'l'
   14 |         for(int l = 2 l <= K l+= 2)
      |                             ^~
      |                             ;
Language: C++

#include <bits/stdc++.h>
using  namespace  std;
using ll=long long;
int main(){
  int n;
  cin>>n;
  if(n%2==0)cout(n/2)*(n/2)<<endl;
  else cout<<(n/2)*(n/2+1)<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: error: no match for call to '(std::ostream {aka std::basic_ostream<char>}) (int)'
    7 |   if(n%2==0)cout(n/2)*(n/2)<<endl;
      |             ~~~~^~~~~
Language: C++

#include <bits/stdc++.h>
using  namespace  std;
using ll=long long;
int main(){
  int n;
  if(n%2==0)cout(n/2)*(n/2)<<endl;
  else cout<<(n/2)*(n/2+1)<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:17: error: no match for call to '(std::ostream {aka std::basic_ostream<char>}) (int)'
    6 |   if(n%2==0)cout(n/2)*(n/2)<<endl;
      |             ~~~~^~~~~
Language: C++

#inlcude<bits/stdc++.h>
using namespace std;

int main(void)
{
  int k;
  scanf("%d",&k);
  printf("%d\n",(k/2)*((k+1)/2));
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inlcude; did you mean #include?
    1 | #inlcude<bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:7:3: error: 'scanf' was not declared in this scope
    7 |   scanf("%d",&k);
      |   ^~~~~
a.cc:8:3: error: 'printf' was not declared in this scope
    8 |   printf("%d\n",(k/2)*((k+1)/2));
      |   ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | #inlcude<bits/stdc++.h>
Language: C++

#inlcude<stdio.h>
using namespace std;

int main(void)
{
  int k;
  scanf("%d",&k);
  printf("%d\n",(k/2)*((k+1)/2));
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inlcude; did you mean #include?
    1 | #inlcude<stdio.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:7:3: error: 'scanf' was not declared in this scope
    7 |   scanf("%d",&k);
      |   ^~~~~
a.cc:8:3: error: 'printf' was not declared in this scope
    8 |   printf("%d\n",(k/2)*((k+1)/2));
      |   ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | #inlcude<stdio.h>
Language: C++

#include<stdio.h>

int main ()
{
int k;
scanf(”%d”,&k);
printf(”%d\n ”,(k/2)∗((k+1)/2));
}

Compiler output:
a.cc:6:7: error: extended character ” is not valid in an identifier
    6 | scanf(”%d”,&k);
      |       ^
a.cc:6:9: error: extended character ” is not valid in an identifier
    6 | scanf(”%d”,&k);
      |         ^
a.cc:7:8: error: extended character ” is not valid in an identifier
    7 | printf(”%d\n ”,(k/2)∗((k+1)/2));
      |        ^
a.cc:7:11: error: stray '\' in program
    7 | printf(”%d\n ”,(k/2)∗((k+1)/2));
      |           ^
a.cc:7:14: error: extended character ” is not valid in an identifier
    7 | printf(”%d\n ”,(k/2)∗((k+1)/2));
      |              ^
a.cc:7:21: error: extended character ∗ is not valid in an identifier
    7 | printf(”%d\n ”,(k/2)∗((k+1)/2));
      |                     ^
a.cc: In function 'int main()':
a.cc:6:7: error: '\U0000201d' was not declared in this scope
    6 | scanf(”%d”,&k);
      |       ^
a.cc:6:9: error: 'd\U0000201d' was not declared in this scope
    6 | scanf(”%d”,&k);
      |         ^~
a.cc:7:10: error: 'd' was not declared in this scope
    7 | printf(”%d\n ”,(k/2)∗((k+1)/2));
      |          ^
a.cc:7:21: error: expected ')' before '\U00002217'
    7 | printf(”%d\n ”,(k/2)∗((k+1)/2));
      |       ~             ^
      |                     )
Language: C

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>

#define MAX(p,q) ((p>q)?(p):(q))
#define MIN(p,q) ((p<q)?(p):(q))

#define REP(i,n) for(i=0;i<n;i++)

int main(void)
{
  int k;
  scanf("%d",&k);
  if(k%2==0) printf("%d",k*k/4);
  else printf("%d",(k-1)/2*((k-1)/2+1);
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:16:39: error: expected ')' before ';' token
   16 |   else printf("%d",(k-1)/2*((k-1)/2+1);
      |              ~                        ^
      |                                       )
main.c:17:12: error: expected ';' before '}' token
   17 |   return 0;
      |            ^
      |            ;
   18 | }
      | ~
Language: C

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>

#define MAX(p,q) ((p>q)?(p):(q))
#define MIN(p,q) ((p<q)?(p):(q))

#define REP(i,n) for(i=0;i<n;i++)

int main(void)
{
  int k;
  if(k%2==0) printf("%d",k*k/4);
  else printf("%d",(k-1)/2*((k-1)/2+1);
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:15:39: error: expected ')' before ';' token
   15 |   else printf("%d",(k-1)/2*((k-1)/2+1);
      |              ~                        ^
      |                                       )
main.c:16:12: error: expected ';' before '}' token
   16 |   return 0;
      |            ^
      |            ;
   17 | }
      | ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int K;
  cin>>K;
  
  if(k%2==0){
    cout<<K*K/4<<endl;
  }
  else{
    cout<<(K*K-1)/4<<endl;
  }
}
  


Compiler output:
a.cc: In function 'int main()':
a.cc:7:6: error: 'k' was not declared in this scope
    7 |   if(k%2==0){
      |      ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int K;
  cin>>K;
  
  if(k%2==0){
    cout<<K*K/4<<endl;
  }
  else{
    cout<<(K*K-1)/4<<endl;
  }
  


Compiler output:
a.cc: In function 'int main()':
a.cc:7:6: error: 'k' was not declared in this scope
    7 |   if(k%2==0){
      |      ^
a.cc:12:4: error: expected '}' at end of input
   12 |   }
      |    ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
    int K;
    cin >> K;
	
  	if(K == 2){
      	cout << 1 << endl;
	}else if(K == 3){
        cout << 2 << endl;
    }else if(K == 4){
        cout << 3 << endl;
    }else{
        cout << 3 * K - 9; << endl;
    }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:28: error: expected primary-expression before '<<' token
   15 |         cout << 3 * K - 9; << endl;
      |                            ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
    int K;
    cin >> K;

    if(K == 3){
        cout << 2 << endl;
    }else if(K == 4){
        cout << 3 << endl;
    }else{
        cout << 3 * K - 9; << endl;
    }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:28: error: expected primary-expression before '<<' token
   13 |         cout << 3 * K - 9; << endl;
      |                            ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int a;
  cin >> a;
  if(a % 2 == 1){
    cout << (a / 2) * (a / 2 + 1) << endl;
  }else{
    cout << (a / 2) ^ 2 << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:25: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   10 |     cout << (a / 2) ^ 2 << endl;
      |                       ~~^~~~~~~
Language: C++

#include<algorithm>
#include <iostream>
#include<cstdio>
#include<cmath>
#include<iomanip>
#include<string>
using namespace std;
int main() {

	int k;
	cin >> k;

	int w, i;
	w = 0;
	for (i = 0; i <= k, i++) {
		w += i / 2;
	}


	cout <<w<< endl;


	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:15:32: error: expected ';' before ')' token
   15 |         for (i = 0; i <= k, i++) {
      |                                ^
      |                                ;