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

#include <bits/stdc++.h>

using namespace std;

int n; string a,b,c,d=0;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    cin >> a >> b >> c;
    for (int i=0;i < n;i++)
    {
        if(a[i]==b[i]&& b[i]==c[i])
        {
            d+=0;
        }
        else
        {
            if(a[i]==b[i] || a[i]==c[i] || c[i]== b[i])
            {
                d+=1;
            }
            else d+=2;
        }
    }
    cout << d;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:14: error: ambiguous overload for 'operator+=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'int')
   18 |             d+=0;
      |             ~^~~
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1377:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
 1377 |       operator+=(const basic_string& __str)
      |       ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:1387:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
 1387 |       operator+=(const _CharT* __s)
      |       ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:1397:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
 1397 |       operator+=(_CharT __c)
      |       ^~~~~~~~
Language: C++

#include <string>
using namespace std;

int main()
{
    string A, B, C;
    int N, counter = 0;
    cin >> N >> A >> B >> C;
    for (int i = 0; i < N; i++)
    {
        if (A[i] == B[i] && A[i] != C[i]) C[i] = A[i]; counter++;
        if (B[i] == C[i] && B[i] != A[i]) A[i] = B[i]; counter++;
        if (C[i] == A[i] && C[i] != B[i]) B[i] = C[i]; counter++;
        if (A[i] != B[i]) A[i] = B[i]; C[i] = B[i]; counter++;
        }
    cout << counter << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: 'cin' was not declared in this scope
    8 |     cin >> N >> A >> B >> C;
      |     ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <string>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:16:5: error: 'cout' was not declared in this scope
   16 |     cout << counter << endl;
      |     ^~~~
a.cc:16:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:16:24: error: 'endl' was not declared in this scope
   16 |     cout << counter << endl;
      |                        ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include <string>
  +++ |+#include <ostream>
    2 | using namespace std;
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
  string s1,s2,s3;
  // int len;
  int n;
  int x = 0;
  cin>>n;
  cin>>a>>b>>c;
  for(int i=0;i<n;i++){
    if(s1[i] != s2[i] && s1[i] != s3[i] && s2[i] != s3[i]) x += 2;
    if(s1[i] == s2[i] && s2[i] == s3[i]) x += 0;
    if(s1[i] == s2[i] || s1[i] == s3[i] || s2[i] == s3[i]) x ++;
  }
  printf("%d\n", x);
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:8: error: 'a' was not declared in this scope
   10 |   cin>>a>>b>>c;
      |        ^
a.cc:10:11: error: 'b' was not declared in this scope
   10 |   cin>>a>>b>>c;
      |           ^
a.cc:10:14: error: 'c' was not declared in this scope
   10 |   cin>>a>>b>>c;
      |              ^
Language: C++

int main(void){
    int N = 0;  // 文字列の長さ
    char* A, B, C;  // 文字列
    int count = 0;  // 操作回数用カウンタ

    std::cin >> N;
    std::cin >> A;
    std::cin >> B;
    std::cin >> C;

    for(int i = 0; i < N; i++){
        if(A[i] != B[i]){
           count++;
           if(B[i] != C[i]){
              if(A[i] != C[i]){
                count++;
              }
           }
        }
       
    }

    std::cout << cout << std::endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'cin' is not a member of 'std'
    6 |     std::cin >> N;
      |          ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | int main(void){
a.cc:7:10: error: 'cin' is not a member of 'std'
    7 |     std::cin >> A;
      |          ^~~
a.cc:7:10: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:8:10: error: 'cin' is not a member of 'std'
    8 |     std::cin >> B;
      |          ^~~
a.cc:8:10: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:9:10: error: 'cin' is not a member of 'std'
    9 |     std::cin >> C;
      |          ^~~
a.cc:9:10: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:12:21: error: invalid types 'char[int]' for array subscript
   12 |         if(A[i] != B[i]){
      |                     ^
a.cc:14:16: error: invalid types 'char[int]' for array subscript
   14 |            if(B[i] != C[i]){
      |                ^
a.cc:14:24: error: invalid types 'char[int]' for array subscript
   14 |            if(B[i] != C[i]){
      |                        ^
a.cc:15:27: error: invalid types 'char[int]' for array subscript
   15 |               if(A[i] != C[i]){
      |                           ^
a.cc:23:10: error: 'cout' is not a member of 'std'
   23 |     std::cout << cout << std::endl;
      |          ^~~~
a.cc:23:10: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:23:18: error: 'cout' was not declared in this scope; did you mean 'count'?
   23 |     std::cout << cout << std::endl;
      |                  ^~~~
      |                  count
a.cc:23:31: error: 'endl' is not a member of 'std'
   23 |     std::cout << cout << std::endl;
      |                               ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | int main(void){
Language: Java

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);

		int n = Integer.parseInt(scanner.nextLine());

		String a = scanner.nextLine();
		String b = scanner.nextLine();
		String c = scanner.nextLine();


		//aとbを先に置換するパターン。
		int abNumChange = countNumChange(a, b, c, n);
		//aとcを先。
		int acNumChange = countNumChange(a, c, b, n);
		//bとcを先。
		int bcNumChange = countNumChange(b, c, a, n);

		int min = abNumChange;

		if (min > acNumChange) {
			min = acNumChange;
		}

		if (min > bcNumChange) {
			min = bcNumChange;
		}

		System.out.println(min);


	}

	static int countNumChange(String firstStr, String secondStr, String thirdStr, int n) {

		int numChange = 0;

		//置換後の文字列。
		String after = "";
		for (int i = 0; i < n; i++) {
			String firstSub = firstStr.substring(i, i+1);
			String secondSub = secondStr.substring(i, i+1);
			if (!firstSub.equals(secondSub)) {
				numChange++;
				if (i % 2 == 0) {
					after += firstSub;
				} else {
					after += secondSub;
				}
			} else {
				after += firstSub;
			}
		}

		for (int i = 0; i < n; i++) {
			String afterSub = after.substring(i, i+1);
			String thirdSub = thirdStr.substring(i, i+1);

			if (!thirdSub.equals(afterSub)) {
				numChange++;
			}
		}


		return numChange;
	}


Compiler output:
Main.java:69: error: reached end of file while parsing
	}
	 ^
1 error
Language: C++

#include <iostream>
#include <cstdio>

using namespace std;
const int MAXN = 100 + 10;

int n;
char a[MAXN], b[MAXN], c[MAXN];

int main(){
    scanf("%d", &n);
    scanf("%s%s%s", a + 1, b + 1, c + 1);
    
    int ans = 0;
    
    for(register int i=1; i<=n; i++){
        if(a[i] != b[i] && b[i] != c[i] && c[i] != a[i]){
            ans += 2;

Compiler output:
a.cc: In function 'int main()':
a.cc:16:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   16 |     for(register int i=1; i<=n; i++){
      |                      ^
a.cc:18:22: error: expected '}' at end of input
   18 |             ans += 2;
      |                      ^
a.cc:17:57: note: to match this '{'
   17 |         if(a[i] != b[i] && b[i] != c[i] && c[i] != a[i]){
      |                                                         ^
a.cc:18:22: error: expected '}' at end of input
   18 |             ans += 2;
      |                      ^
a.cc:16:37: note: to match this '{'
   16 |     for(register int i=1; i<=n; i++){
      |                                     ^
a.cc:18:22: error: expected '}' at end of input
   18 |             ans += 2;
      |                      ^
a.cc:10:11: note: to match this '{'
   10 | int main(){
      |           ^
Language: C++

#include <cstdio>

char c1[200],c2[200],c3[200];
int i,n,s;

int main()
{
	scanf("%d\n",&n);
	gets(c1+1);
	gets(c2+1);
	gets(c3+1);
	for (i=1;i<=n;i++)
		if ((c1[i]==c2[i]) && (c1[i]==c3[i]))
			s=s+3;
		else
			if ((c1[i]==c2[i]) || (c1[i]==c3[i]) || (c2[i]==c3[i]))
				s=s+2;
			else
				s=s+1;
	printf("%d",3*n-s);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    9 |         gets(c1+1);
      |         ^~~~
      |         getw
Language: C++

#include <cstdio>
#include <cstring>

char c1[200],c2[200],c3[200];
int i,n,s;

int main()
{
	scanf("%d\n",&n);
	gets(c1+1);
	gets(c2+1);
	gets(c3+1);
	for (i=1;i<=n;i++)
		if ((c1[i]==c2[i]) && (c1[i]==c3[i]))
			s=s+3;
		else
			if ((c1[i]==c2[i]) || (c1[i]==c3[i]) || (c2[i]==c3[i]))
				s=s+2;
			else
				s=s+1;
	printf("%d",3*n-s);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
   10 |         gets(c1+1);
      |         ^~~~
      |         getw
Language: Java


import java.util.*;
import java.lang.*;
import java.io.*;
 
class Main {
  public static void main(String args[]) {
    Scanner scanner = new Scanner(System.in);
 
    String input1 = scanner.nextLine();
    String A = scanner.nextLine();
    String B = scanner.nextLine();
    String C = scanner.nextLine();
 

int N = Integer.parseInt(input1);

int count = 0;

String AN = "";
String BN = "";
String CN = "";

for(int i=0; i<N;i++){
AN = A.substring(i,i+1);
BN = B.substring(i,i+1);
CN = C.substring(i,i+1);

if(!AN.equal(BN)){
if(!BN.equal(CN)){
count++;
count++;
}else{
count++;
}
}else{
if(!AN.equal(CN)){
count++;
}else if(!BN.equal(CN)){
count++;
}
}
}

    System.out.print(count);
    scanner.close();
  }
}

Compiler output:
Main.java:29: error: cannot find symbol
if(!AN.equal(BN)){
      ^
  symbol:   method equal(String)
  location: variable AN of type String
Main.java:30: error: cannot find symbol
if(!BN.equal(CN)){
      ^
  symbol:   method equal(String)
  location: variable BN of type String
Main.java:37: error: cannot find symbol
if(!AN.equal(CN)){
      ^
  symbol:   method equal(String)
  location: variable AN of type String
Main.java:39: error: cannot find symbol
}else if(!BN.equal(CN)){
            ^
  symbol:   method equal(String)
  location: variable BN of type String
4 errors
Language: Java

import java.util.*;
import java.lang.*;
import java.io.*;
 
class Main {
  public static void main(String args[]) {
    Scanner scanner = new Scanner(System.in);
 
    String input1 = scanner.nextLine();
    String A = scanner.nextLine();
    String B = scanner.nextLine();
    String C = scanner.nextLine();
 
int N = Integer.parseInt(input1);

int count = 0;


String AN = "";
String BN = "";
String CN = "";

for(int i=0; i<N;i++){
AN = A.substring(i,i+1);
BN = B.substring(i,i+1);
CN = C.substring(i,i+1);

count++;
count++;

if(!AN.equal(BN)){
if(!BN.equal(CN)){
count++;
count++;
}else{
count++;
}
}else{
if(!AN.equal(CN)){
count++;
}else if(!BN.equal(CN)){
count++;
}
}
}
    System.out.print(count);
    scanner.close();
  }
}

Compiler output:
Main.java:31: error: cannot find symbol
if(!AN.equal(BN)){
      ^
  symbol:   method equal(String)
  location: variable AN of type String
Main.java:32: error: cannot find symbol
if(!BN.equal(CN)){
      ^
  symbol:   method equal(String)
  location: variable BN of type String
Main.java:39: error: cannot find symbol
if(!AN.equal(CN)){
      ^
  symbol:   method equal(String)
  location: variable AN of type String
Main.java:41: error: cannot find symbol
}else if(!BN.equal(CN)){
            ^
  symbol:   method equal(String)
  location: variable BN of type String
4 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
  string a,b,c;
  cin>>a>>b>>c;
  int len = a.length();
  int ans = 0;
  for(int i=0;i<n;i++){
    if(a[i] != b[i] && a[i] != c[i] && b[i] != c[i])ans += 2;
    if(a[i] == b[i] && b[i] == c[i])continue;
    if(a[i] == b[i] || a[i] == c[i] || b[i] == c[i]) ans ++;
  }
  cout<<ans<<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:17: error: 'n' was not declared in this scope
    9 |   for(int i=0;i<n;i++){
      |                 ^
Language: C++

#include<iostream>
2.#include <bits/stdc++.h>
3.#include<stdio.h>
4.#include <stdlib.h>
5.#include<string>
6.#include<queue>
7.#include<algorithm>
8.using namespace std;
9. 
10.int main(){
11.	int N;
12.	string A,B,C;
13.	int ANS=0;
14.	cin>>N>>A>>B>>C;
15.	for(int i=0;i<N;i++){
16.		int count=0;
17.		if(A.at(i)==B.at(i)){
18.			count++;
19.		}
20.		if(C.at(i)==B.at(i)){
21.			count++;
22.		}		
23.		if(A.at(i)==C.at(i)){
24.			count++;
25.		}
26.		if(count==1){
27.			ANS++;
28.		}else if(count==0){
29.			ANS+=2;
30.		}
31.	}
32.	cout<<ANS<<endl;
33.}


Compiler output:
a.cc:2:3: error: stray '#' in program
    2 | 2.#include <bits/stdc++.h>
      |   ^
a.cc:3:3: error: stray '#' in program
    3 | 3.#include<stdio.h>
      |   ^
a.cc:4:3: error: stray '#' in program
    4 | 4.#include <stdlib.h>
      |   ^
a.cc:5:3: error: stray '#' in program
    5 | 5.#include<string>
      |   ^
a.cc:6:3: error: stray '#' in program
    6 | 6.#include<queue>
      |   ^
a.cc:7:3: error: stray '#' in program
    7 | 7.#include<algorithm>
      |   ^
a.cc:2:1: error: expected unqualified-id before numeric constant
    2 | 2.#include <bits/stdc++.h>
      | ^~
a.cc:9:1: error: expected unqualified-id before numeric constant
    9 | 9.
      | ^~
Language: C++

#include<bits/stdc++.h>
#include <chrono> 
#define int long long
#define ll long long
#define vb  vector <bool>
#define pb push_back
#define mpr make_pair
#define Senky_Bansal ios_base::sync_with_stdio(false);
#define IIIT_ALLAHABAD    cin.tie(NULL);cout.tie(NULL);
using namespace std;
signed main()
{
    Senky_Bansal
    IIIT_ALLAHABAD
    ll n;
    cin>>n;
    string a,b,c;
    cin>>a
    ll ans=0;
    for(int i=0;i<n;i++)
    {
       // cout<<a[i]<<" "<<b[i]<<" "<<c[i]<<endl;
        if(a[i]!=b[i] && a[i]!=c[i] && b[i]!=c[i])
        ans+=2;
        else if(a[i]==b[i] && a[i]!=c[i])
        ans+=1;
        else if(a[i]==c[i] && b[i]!=c[i])
        ans+=1;
        else if(b[i]==c[i] && b[i]!=a[i])
        ans+=1;
    }
    cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:11: error: expected ';' before 'long'
   18 |     cin>>a
      |           ^
      |           ;
a.cc:24:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   24 |         ans+=2;
      |         ^~~
      |         abs
a.cc:26:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   26 |         ans+=1;
      |         ^~~
      |         abs
a.cc:28:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   28 |         ans+=1;
      |         ^~~
      |         abs
a.cc:30:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   30 |         ans+=1;
      |         ^~~
      |         abs
a.cc:32:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   32 |     cout<<ans<<endl;
      |           ^~~
      |           abs
Language: C++

int main()
{
	//std::cout << "Hello World!\n"; 

	int N;
	string a, b, c;
	cin >> N >> a >> b >> c;

	int count = 0;
	for (int ic = 0; ic < N; ic++) {
		// aとｂが一緒
		if (a.c_str()[ic] == b.c_str()[ic] && a.c_str()[ic] == c.c_str()[ic]) {

		}
		else if (a.c_str()[ic] == b.c_str()[ic] && a.c_str()[ic] != c.c_str()[ic]) {
			count += 1;
		}
		else if (b.c_str()[ic] == c.c_str()[ic] && a.c_str()[ic] != b.c_str()[ic]) {
			count += 1;
		}
		else if (a.c_str()[ic] == c.c_str()[ic] && b.c_str()[ic] != c.c_str()[ic]) {
			count += 1;
		}
		else{
			count += 2;
		}

	}
	cout << count;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'string' was not declared in this scope
    6 |         string a, b, c;
      |         ^~~~~~
a.cc:7:9: error: 'cin' was not declared in this scope
    7 |         cin >> N >> a >> b >> c;
      |         ^~~
a.cc:7:21: error: 'a' was not declared in this scope
    7 |         cin >> N >> a >> b >> c;
      |                     ^
a.cc:7:26: error: 'b' was not declared in this scope
    7 |         cin >> N >> a >> b >> c;
      |                          ^
a.cc:7:31: error: 'c' was not declared in this scope
    7 |         cin >> N >> a >> b >> c;
      |                               ^
a.cc:29:9: error: 'cout' was not declared in this scope; did you mean 'count'?
   29 |         cout << count;
      |         ^~~~
      |         count
Language: Java

package test;

public class Main {

	public static void main(String[] args) {

		int N = Long.valueOf(args[0]);
		String A = args[1];
		String B = args[2];
		String C = args[3];

		exec(N, A, B, C);

	}

	private static void exec(int _N, String _A, String _B, String _C) {

		int cnt = 0;
		for (int i = 0; i < _N; i++) {
			String tmpA = _A.substring(i, i+1);
			String tmpB = _B.substring(i, i+1);
			String tmpC = _C.substring(i, i+1);
			if (tmpA.equals(tmpB)) {
				if (!tmpA.equals(tmpC)) {
					// C入れ替える
					cnt++;
				}
			} else {
				if (tmpA.equals(tmpC)) {
					// Bを入れ替える
					cnt++;
				} else {
					if (tmpB.equals(tmpC)) {
						// Aを入れ替える
						cnt++;
					} else {
						// BとCを入れ替える
						cnt++;
						cnt++;
					}
				}
			}
		}

		System.out.println(cnt);
	}

}


Compiler output:
Main.java:7: error: incompatible types: Long cannot be converted to int
		int N = Long.valueOf(args[0]);
		                    ^
1 error
Language: Java

class Main{
    public static void main(String args[]){
         int total=0;
         for(int i=0;i<args[0].length();i++){
             if(args[0].charAt(i)==args[1].charAt(i)==args[2].charAt(i))
                   continue;
             else if(args[0].charAt(i)==args[1].charAt(i) || 
                       args[0].charAt(i)==args[2].charAt(i) ||
                       args[1].charAt(i)==args[2].charAt(i))
                  total++;
            else
                 total+=2;
            System.out.println(total);
}


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

#include<stdio.h>
int main(void){
    int N,i,count=0;
    char A[101],B[101],C[101],;
    scanf("%d",&N);
    scanf("%s",A);
    scanf("%s",B);
    scanf("%s",C);
    for(i=0;i<N;i++){
        if(A[i]!=B[i] && B[i]!=C[i] && C[i]!=A[i]){
            count+=2;
        }else if(A[i]==B[i] && B[i]==C[i]){
            continue;
        }else{
            count++;
        }
    }
    printf("%d\n",count);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:31: error: expected identifier or '(' before ';' token
    4 |     char A[101],B[101],C[101],;
      |                               ^
Language: C++

#include<stdio.h>
int main(void) {
	int n ,,sum=0,x;
	char a[100], b[100], c[100];
	char k;

	scanf("%d %s %s %s",&n,a,b,c);
	for (i = 0;i<n;i++) {
		k = a[i];
		x = 0;
		if (k!=b[i])x++;
		if (k != c[i])x++;
		sum += x;
	}
	printf("%d\n",sum);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:16: error: expected unqualified-id before ',' token
    3 |         int n ,,sum=0,x;
      |                ^
a.cc:8:14: error: 'i' was not declared in this scope
    8 |         for (i = 0;i<n;i++) {
      |              ^
Language: C++

#include <iostream>
#include <vector>
using namespace std;

void defining_lists(vector<char> &lists, int N){
    for (int i = 0; i < N; i++){
        char element;
        cin >> element;
        lists.push_back(element);
    }
}

int main(){
    int N;
    vector <char> A, B, C;
    vector <char> &rA = A;
    vector <char> &rB = B;
    vector <char> &rC = C;
    cin >> N;
    defining_lists(rA, N);
    defining_lists(rB, N);
    defining_lists(rC, N);
    int count = 0;
    for (int i = 0; i < N; i++){
        vector<char> vec;
        vec.push_back(A[i]);
        vec.push_back(B[i]);
        vec.push_back(C[i]);
        sort(vec.begin(), vec.end());
        vec.erase( unique(vec.begin(), vec.end()), vec.end() );
        int size = vec.size();
        if (size == 3){
            count += 2;
        }else if (size == 2){
            count += 1;
        }
    }
    cout << count << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   29 |         sort(vec.begin(), vec.end());
      |         ^~~~
      |         short
a.cc:30:20: error: 'unique' was not declared in this scope
   30 |         vec.erase( unique(vec.begin(), vec.end()), vec.end() );
      |                    ^~~~~~
Language: C

#include<stdio.h>
int main(void){
    int N,i,count=0;
    char A[101],B[101],C[101],;
    scanf("%d",&N);
    scanf("%s",&A);
    scanf("%s",&B);
    scanf("%s",&C);
    for(i=0;i<N;i++){
        if(A[i]!=B[i] && B[i]!=C[i] && C[i]!=A[i]){
            count+=2;
        }else if(A[i]==B[i] && B[i]==C[i]){
            continue;
        }else{
            count++;
        }
    }
    printf("%d\n",count);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:31: error: expected identifier or '(' before ';' token
    4 |     char A[101],B[101],C[101],;
      |                               ^
Language: C

#include<stdio.h>
int main(void){
    int N,i,j,count=0;
    char A[101],B[101],C[101],;
    scanf("%d",&N);
    scanf("%s",&A);
    scanf("%s",&B);
    scanf("%s",&C);
    for(i=0;i<N;i++){
        if(A[i]!=B[i] && B[i]!=C[i] && C[i]!=A[i]){
            count+=2;
        }else if(A[i]==B[i] && B[i]==C[i]){
            continue;
        }else{
            count++;
        }
    }
    printf("%d\n",count);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:31: error: expected identifier or '(' before ';' token
    4 |     char A[101],B[101],C[101],;
      |                               ^
Language: C

#include<stdio.h>
int main(void){
    int N,i,j,count=0;
    char A[],B[],C[],;
    scanf("%d",&N);
    scanf("%s",&A);
    scanf("%s",&B);
    scanf("%s",&C);
    for(i=0;i<N;i++){
        if(A[i]!=B[i] && B[i]!=C[i] && C[i]!=A[i]){
            count+=2;
        }else if(A[i]==B[i] && B[i]==C[i]){
            continue;
        }else{
            count++;
        }
    }
    printf("%d\n",count);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:10: error: array size missing in 'A'
    4 |     char A[],B[],C[],;
      |          ^
main.c:4:14: error: array size missing in 'B'
    4 |     char A[],B[],C[],;
      |              ^
main.c:4:18: error: array size missing in 'C'
    4 |     char A[],B[],C[],;
      |                  ^
main.c:4:22: error: expected identifier or '(' before ';' token
    4 |     char A[],B[],C[],;
      |                      ^
Language: C++

#include<iostream>
#include <bits/stdc++.h>
#include<stdio.h>
#include <stdlib.h>
#include<String>
#include<queue>
#include<algorithm>
using namespace std;

int main(){
	int N;
	string A,B,C;
	int ANS=0;
	cin>>N>>A>>B>>C;
	for(int i=0;i<N;i++){
		int count=0;
		if(A.at(i)==B.at(i)){
			count++;
		}
		if(C.at(i)==B.at(i)){
			count++;
		}		
		if(A.at(i)==C.at(i)){
			count++;
		}
		if(count==1){
			ANS++;
		}else if(count==0){
			ANS+=2;
		}
	}
	cout<<ANS<<endl;
}

Compiler output:
a.cc:5:9: fatal error: String: No such file or directory
    5 | #include<String>
      |         ^~~~~~~~
compilation terminated.
Language: C++

#include <stdio.h>
#include <cmath>
#include <stdlib.h>
#include <algorithm>

int main()
{
    int n;
    int a[1000000000],b[1000000000];
    scanf("%d", &n);
    
    scanf("%s", a);
    scanf("%s", b);
    scanf("%s", c);
    
    int count = 0;
    for(int i = 0;i < n;i++)
    {
        if(a[i] == b[i] && a[i] == c[i])
            continue;
        if(a[i] == b[i] || a[i] == c[i] || c[i] == b[i])
        {
            count++;
            continue;
        }
        
        count += 2;
    }

    printf("%d", count);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: 'c' was not declared in this scope
   14 |     scanf("%s", c);
      |                 ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	char a[3][1005];
	int n;
	cin>>n;
	for(int i=0;i<3;i++)
		for(int j=0;j<n;j++){
			cin>>a[i][j];
		}
	int cnt=0;
	for(int j=0;j<n;j++){
		if(a[0][j]==a[1][j]&&a[0][j]==a[2][j]&&a[1][j]==a[2][j])
			cnt+=0;
		else if(a[0][j]!=a[1][j]&&a[0][j]!=a[2][j]&&a[1][j]!=a[2][j])
			cnt+=2;
		else 
			cnt+=17
zenkoku
touitsu
program;
	}
	cout<<cnt<<endl;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:18:32: error: expected ';' before 'zenkoku'
   18 |                         cnt+=17
      |                                ^
      |                                ;
   19 | zenkoku
      | ~~~~~~~
Language: C++

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

int N,A,B,C,ans = 0;

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	cin >> N >> A >> B >> C;

	
	REP(i,N){
		if(A[i] == B[i] == C[i]) continue;
		if(A[i] != B[i] && B[i] != C[i] && C[i] != A[i]){
			ans += 2;
		}else{
			ans++;
		}
			
			
	}
	
	cout << ans << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:21: error: invalid types 'int[int]' for array subscript
   15 |                 if(A[i] == B[i] == C[i]) continue;
      |                     ^
a.cc:15:29: error: invalid types 'int[int]' for array subscript
   15 |                 if(A[i] == B[i] == C[i]) continue;
      |                             ^
a.cc:15:37: error: invalid types 'int[int]' for array subscript
   15 |                 if(A[i] == B[i] == C[i]) continue;
      |                                     ^
a.cc:16:21: error: invalid types 'int[int]' for array subscript
   16 |                 if(A[i] != B[i] && B[i] != C[i] && C[i] != A[i]){
      |                     ^
a.cc:16:29: error: invalid types 'int[int]' for array subscript
   16 |                 if(A[i] != B[i] && B[i] != C[i] && C[i] != A[i]){
      |                             ^
a.cc:16:37: error: invalid types 'int[int]' for array subscript
   16 |                 if(A[i] != B[i] && B[i] != C[i] && C[i] != A[i]){
      |                                     ^
a.cc:16:45: error: invalid types 'int[int]' for array subscript
   16 |                 if(A[i] != B[i] && B[i] != C[i] && C[i] != A[i]){
      |                                             ^
a.cc:16:53: error: invalid types 'int[int]' for array subscript
   16 |                 if(A[i] != B[i] && B[i] != C[i] && C[i] != A[i]){
      |                                                     ^
a.cc:16:61: error: invalid types 'int[int]' for array subscript
   16 |                 if(A[i] != B[i] && B[i] != C[i] && C[i] != A[i]){
      |                                                             ^
Language: C++

#include <iostream>
#include <string>
#include <functional>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <vector>
#include <map>
#include <set>
#include <string>

using namespace std;

int n;
string s[10];

int main() {
    cin >> n;
    for (int i = 0; i < 3; i++) cin >> s[i];
    int ans = 0;
    for (int i = 0; i < n; i++) {
        static int c[26];
        memset(c, 0, sizeof c);
        for (int j = 0; j < 3; j++) c[s[j][i] - 'a']++;
        int mx = 0;
        for (int j = 0; j < 26; j++) mx = max(mx, c[j]);
        if (mx == 1) ans += 2;
        else if (mx == 2) ans += 1;
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:9: error: 'memset' was not declared in this scope
   23 |         memset(c, 0, sizeof c);
      |         ^~~~~~
a.cc:10:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    9 | #include <set>
  +++ |+#include <cstring>
   10 | #include <string>
Language: C++

//
//  atcoder.cpp
//  
//
//  Created by 中川阿津志 on 2018/12/05.
//
#include <bits/stdc++.h>
#define REP(i, N) for(int i=0; i<N; i++)
using namespace std;

//#include "atcoder.hpp"

long long gcd(long long a, long long b) {
    if (a>b) swap(a,b);
    
    auto r = b % a;
    
    return (r ? gcd(r, a) : a);
}
int main() {
    long long   P, r = 0;
    vector<int> w(1, 1);
    int N;
    string A,B,C;
    cin >> N >> A >> B >> C;


    int r = 0;
    for (int i = 0; i < N; i++) {
        if (A[i]==B[i] && B[i]==C[i])
            continue;
        else if(A[i]==B[i] || B[i]==C[i] || A[i]==C[i])
            r+=1;
        else r+=2;
    }
    cout << r << endl;

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:9: error: conflicting declaration 'int r'
   28 |     int r = 0;
      |         ^
a.cc:21:20: note: previous declaration as 'long long int r'
   21 |     long long   P, r = 0;
      |                    ^
Language: C++

#include <iostream>
#include <atomic>
#include <thread>
#include <mutex>
#include <string>
#include <string.h>
#include <functional>
#include <vector>
#include <list>
#include <queue>
#include <map>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#define rep(i,n) for(int i=0;i<n;i++)
#define eps LDBL_EPSILON
#define moder 1000000007
#define int long long
#define ll long long
#define INF LLONG_MAX/3
#define P std::pair<int,int>
#define prique priority_queue<int,vector<int>,greater<int>>
using namespace std;
int n;
string a, b, c;
signed main() {
	cin >> n >> a >> b >> c;
	int ans = 0;
	rep(i, n) {
		char s[] = { a[i],b[i],c[i] };
		sort(s, s + 3);
		if (s[0] == s[1] || s[1] == s[2]) {
			if (s[0] != s[2])ans += 1;
		}
		else ans += 2;
	}
	cout << ans << endl;
	return 0;


}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:17: error: 'sort' was not declared in this scope; did you mean 'short'?
   32 |                 sort(s, s + 3);
      |                 ^~~~
      |                 short
Language: C++

#include<algorithm>
#include<cmath>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<functional>
#include<iomanip>
#include<iostream>
#include<list>
#include<map>
#include<queue>
#include<random>
#include<set>
#include<stack>
#include<string>
#include<utility>
#include<vector>

#define FOR(i,a,b) for(long long i=(a);i<(b);++i)
#define REP(i,n)   FOR(i,0,n)
#define FORR(i,a,b) for(long long i=(a);i>=(b);--i)
#define REPR(i,n)   FORR(i,n,0)

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll>pll;

int main() {
	
	int n;
    string s,t,u;
    cin>>n>>s>>t>>u;
    int ans=0;
    REP(i,N){
        int cnt=0;
        if(s[i]==t[i]){
            cnt++;
        }
        if(t[i]==u[i]){
            cnt++;
        }
        if(u[i]==s[i]){
            cnt++;
        }
        if(cnt==0){
            ans+=2;
        }
        else if(cnt==1){
            ans++;
        }
    }
	
    cout<<ans<<endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:35:11: error: 'N' was not declared in this scope
   35 |     REP(i,N){
      |           ^
a.cc:19:43: note: in definition of macro 'FOR'
   19 | #define FOR(i,a,b) for(long long i=(a);i<(b);++i)
      |                                           ^
a.cc:35:5: note: in expansion of macro 'REP'
   35 |     REP(i,N){
      |     ^~~
Language: C++

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

signed main() {
	int n;
	string a, b, c;
	cin >> n >> a >> b >> c;
	int ans = 0;
	rep(i, n) {
		if(a[i] == b[i] && b[i] == c[i]) {}
		else if(a[i] == b[i] || b[i] == c[i] || c[i] == a[i]) {
			ans += 1;
		}
		else {
			ans += 2;
		}
	}
	cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: 'i' was not declared in this scope
   10 |         rep(i, n) {
      |             ^
a.cc:10:9: error: 'rep' was not declared in this scope
   10 |         rep(i, n) {
      |         ^~~
Language: C++

#include<bits/stdc++.h>

using namespace std;

#define debug(n) cerr << #n << ':' << n << endl;
#define dline    cerr << __LINE__ << endl;

using ll = long long;
using ull = unsigned long long;
template<class T, class U> using P = pair<T,U>;
template<class T> using Heap = priority_queue<T>;
template<class T> using heaP = priority_queue<T,vector<T>,greater<T>>;
template<class T,class U> using umap = unordered_map<T,U>;
template<class T> using uset = unordered_set<T>;

template<class T>
bool ChangeMax(T&a,const T&b){
  if(a >= b) return false;
  a = b;    return true;
}

template<class T>
bool ChangeMin(T&a,const T&b){
  if(a <= b) return false;
  a = b;    return true;  
}

template<class T, size_t N, class U>
void Fill(T (&a)[N], const U&v){
    fill((U*)a,(U*)(a+N),v);
}

template<class T,class U>
istream& operator >> (istream&is, P<T,U>&p){
  is >> p.first >> p.second;
  return is;
}

template<class T>
istream& operator >> (istream&is, vector<T>&v){
  for(auto&e:v){
    is >> e;
  }
  return is;
}
int main(){
  int n; cin >> n;
  vector<int> a(n),t(n);
  for(int i = 0; i < n; ++i)cin >> a[i] >> t[i];
  vector<P<int,int>> v(n);
  for(int i = 0; i < n; ++i){
    v[i] = {a[i]+t[i],i};
  }
  sort(v.rbegin(), v.rend());
  ll ans = 0;
  for(int i = 0; i < n; ++i){
    if(i%2==0)ans += a[v[i].second];
    else ans -= t[v[i].second];
  }
  cout << ans << endl;b
}


Compiler output:
a.cc: In function 'int main()':
a.cc:60:23: error: 'b' was not declared in this scope
   60 |   cout << ans << endl;b
      |                       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < n; i++)
#define repl(i, l, r) for (ll i = (l); i < (r); i++)
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define CST(x) cout << fixed << setprecision(x)
using ll = long long;
const ll MOD = 1000000007;
const int inf = 1e9 + 10;
const ll INF = 4e18;
const int dx[9] = {1, 0, -1, 0, 1, -1, -1, 1, 0};
const int dy[9] = {0, 1, 0, -1, 1, 1, -1, -1, 0};
int main() {
	cin.tie(0);
	cout.tie(0);
	ios::sync_with_stdio(false);

	int n;
	cin >> n;
	int a[n], b[n];
	pair<int, int> p[n];
	rep(i, n) {
		cin >> a[i] >> b[i];
		p[i] = {a[i] + b[i], i};
	}
	sort(p, p + n, greater < pair<int, int>());
	ll ans = 0;
	rep(i, n) {
		if (i % 2)
			ans -= b[p[i].second];
		else
			ans += a[p[i].second];
	}
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:49: error: type/value mismatch at argument 1 in template parameter list for 'template<class _Tp> struct std::greater'
   28 |         sort(p, p + n, greater < pair<int, int>());
      |                                                 ^
a.cc:28:49: note:   expected a type, got 'std::pair<int, int>()'
Language: C++

#include "pch.h"
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <queue>
#include <stack>
#include <cstdlib>
#include <map>
#include <iomanip>
#include <set>
#include <stdio.h>
#include <ctype.h>
#include <random>
#include <string.h>
#include <cmath>
#include <unordered_map>
#include <cstdio>
using namespace std;
#define pie 3.141592653589793238462643383279
#define mod 1000000007
#define int long long
#define P pair<int,int>
#define all(vec) vec.begin(),vec.end()

int gcd(int x, int y) {
	if (y == 0)return x;
	return gcd(y, x%y);
}
int lcm(int x, int y) {
	return x / gcd(x, y)*y;
}
int kai(int x, int y) {
	int res = 1;
	for (int i = x - y + 1; i <= x; i++) {
		res *= i; res %= mod;
	}
	return res;
}
int mod_pow(int x, int y, int m) {
	int res = 1;
	while (y > 0) {
		if (y & 1) {
			res = res * x % m;
		}
		x = x * x % m;
		y >>= 1;
	}
	return res;
}

int comb(int x, int y) {
	if (y > x)return 0;
	return kai(x, y) * mod_pow(kai(y, y), mod - 2, mod) % mod;
}

int n;
int ans;
vector<int> vec;

signed main() {
	cin >> n;
	for (int i = 0; i < n; i++) {
		int a, b; cin >> a >> b;
		ans -= b;
		vec.push_back(a + b);
	}
	sort(all(vec));
	reverse(all(vec));
	for (int i = 0; i < n; i += 2)ans += vec[i];
	cout << ans << endl;
}

Compiler output:
a.cc:1:10: fatal error: pch.h: No such file or directory
    1 | #include "pch.h"
      |          ^~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define IOS ios::sync_with_stdio(false); cin.tie(0);
#define FOR(i,s,n) for(int i = (s); i < (n); i++)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for(int i = (n); i >= 0; i--)
#define ALL(n) (n).begin(), (n).end()
#define RALL(n) (n).rbegin(), (n).rend()
#define ATYN(n) cout << ( (n) ? "Yes":"No") << '\n';
#define CFYN(n) cout << ( (n) ? "YES":"NO") << '\n';
#define OUT(n) cout << (n) << '\n';
using ll = long long;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;

int main(void)
{
    IOS
    int n; cin >> n;
    vector<ll> abd(n);
    REP(i,n) {
        ll a, b;
        cin >> a >> b;
        abd[i] = a-b;
    }
    OUT(accumulate(ALL(ab),1LL));

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:27:24: error: 'ab' was not declared in this scope; did you mean 'abd'?
   27 |     OUT(accumulate(ALL(ab),1LL));
      |                        ^~
a.cc:11:25: note: in definition of macro 'OUT'
   11 | #define OUT(n) cout << (n) << '\n';
      |                         ^
a.cc:27:20: note: in expansion of macro 'ALL'
   27 |     OUT(accumulate(ALL(ab),1LL));
      |                    ^~~
Language: C++

#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
#define double long double
using datas=pair<ll,ll>;
using ddatas=pair<double,double>;
using tdata=pair<ll,datas>;
using vec=vector<ll>;
using mat=vector<vec>;
using pvec=vector<datas>;
using pmat=vector<pvec>;
#define For(i,a,b) for(i=a;i<(ll)b;i++)
#define bFor(i,a,b) for(i=a;i>=(ll)b;i--)
#define rep(i,N) For(i,0,N)
#define rep1(i,N) For(i,1,N)
#define brep(i,N) bFor(i,N-1,0)
#define all(v) (v).begin(),(v).end()
#define allr(v) (v).rbegin(),(v).rend()
#define vsort(v) sort(all(v))
#define vrsort(v) sort(allr(v))
#define endl "\n"
#define pb push_back
#define print(v) cout<<v<<endl
#define printyes cout<<"Yes"<<endl
#define printno cout<<"No"<<endl
#define printYES cout<<"YES"<<endl
#define printNO cout<<"NO"<<endl
#define output(v) do{bool f=0;for(auto outi:v){cout<<(f?" ":"")<<outi;f=1;}cout<<endl;}while(0)
const ll mod=1000000007;
const ll inf=1LL<<60;
const double PI = acos(-1);
const double eps = 1e-9;
template<class T> inline bool chmax(T& a,T b){bool x=a<b;if(x)a=b;return x;} 
template<class T> inline bool chmin(T& a,T b){bool x=a>b;if(x)a=b;return x;} 

void startupcpp(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout<<fixed<<setprecision(15);
}

double distance(ddatas x,ddatas y){
  double a=x.first-y.first,b=x.second-y.second;
  return sqrt(a*a+b*b);
}

ll modinv(ll a) {
  ll b=mod,u=1,v=0,t;
  while(b){
    t=a/b;
    a-=t*b; swap(a,b);
    u-=t*v; swap(u,v);
  }
  return (u+mod)%mod;
}

ll moddevide(ll a,ll b){return (a*modinv(b))%mod;}

vec modncrlistp,modncrlistm;

ll modncr(ll n,ll r){
  ll i,size=modncrlistp.size();
  if(size<=n){
    modncrlistp.resize(n+1);
    modncrlistm.resize(n+1);
    if(!size){
      modncrlistp[0]=modncrlistm[0]=1;
      size++;
    }
    For(i,size,n+1){
      modncrlistp[i]=modncrlistp[i-1]*i%mod;
      modncrlistm[i]=modinv(modncrlistp[i]);
    }
  }
  return modncrlistp[n]*modncrlistm[r]%mod*modncrlistm[n-r]%mod;
}

ll modpow(ll a,ll n){
  ll res=1;
  while(n){
    if(n&1)res=res*a%mod;
    a=a*a%mod;
    n>>=1;
  }
  return res;
}

ll gcd(ll a,ll b){if(!b)return a;return (a%b==0)?b:gcd(b,a%b);}
ll lcm(ll a,ll b){return a/gcd(a,b)*b;}

ll countdigits(ll n){
  ll ans=0;
  while(n){n/=10;ans++;}
  return ans;
}

ll sumdigits(ll n){
  ll ans=0;
  while(n){ans+=n%10;n/=10;}
  return ans;
}
struct p{
  ll a,b,i;
}
int main(){
  // startupcpp();
  // ll test;cin>>test;while(test--){
  ll i,j,N,ansa=0,ansb=0;
  cin>>N;
  vector<p> v(N),ev;
  rep(i,N)cin>>v[i].a>>v[i].b;
  ev=v;
  sort(all(v),[](p l,p r){
    if(abs(l.a-l.b)!=abs(r.a-r.b))return abs(l.a-l.b)>abs(r.a-r.b);
    else return l.a>r.a;
  });
  sort(all(ev),[](p l,p r){
    if(abs(l.a-l.b)!=abs(r.a-r.b))return abs(l.a-l.b)>abs(r.a-r.b);
    else return l.b>r.b;
  });
  vec ch(N,0);
  i=j=0;
  while(1){
    while(i<N&&ch[v[i].i])++i;
    if(i==N)break;
    ansa+=v[i].a;
    ch[v[i].i]=1;
    while(j<N&&ch[v[j].i])++j;
    if(j==N)break;
    ansb+=v[j].b;
    ch[v[j].i]=1;
  }
  print(ansa-ansb);
}

Compiler output:
a.cc:105:2: error: expected ';' after struct definition
  105 | }
      |  ^
      |  ;
Language: C++

#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
#define double long double
using datas=pair<ll,ll>;
using ddatas=pair<double,double>;
using tdata=pair<ll,datas>;
using vec=vector<ll>;
using mat=vector<vec>;
using pvec=vector<datas>;
using pmat=vector<pvec>;
#define For(i,a,b) for(i=a;i<(ll)b;i++)
#define bFor(i,a,b) for(i=a;i>=(ll)b;i--)
#define rep(i,N) For(i,0,N)
#define rep1(i,N) For(i,1,N)
#define brep(i,N) bFor(i,N-1,0)
#define all(v) (v).begin(),(v).end()
#define allr(v) (v).rbegin(),(v).rend()
#define vsort(v) sort(all(v))
#define vrsort(v) sort(allr(v))
#define endl "\n"
#define pb push_back
#define print(v) cout<<v<<endl
#define printyes cout<<"Yes"<<endl
#define printno cout<<"No"<<endl
#define printYES cout<<"YES"<<endl
#define printNO cout<<"NO"<<endl
#define output(v) do{bool f=0;for(auto outi:v){cout<<(f?" ":"")<<outi;f=1;}cout<<endl;}while(0)
const ll mod=1000000007;
const ll inf=1LL<<60;
const double PI = acos(-1);
const double eps = 1e-9;
template<class T> inline bool chmax(T& a,T b){bool x=a<b;if(x)a=b;return x;} 
template<class T> inline bool chmin(T& a,T b){bool x=a>b;if(x)a=b;return x;} 

void startupcpp(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout<<fixed<<setprecision(15);
}

double distance(ddatas x,ddatas y){
  double a=x.first-y.first,b=x.second-y.second;
  return sqrt(a*a+b*b);
}

ll modinv(ll a) {
  ll b=mod,u=1,v=0,t;
  while(b){
    t=a/b;
    a-=t*b; swap(a,b);
    u-=t*v; swap(u,v);
  }
  return (u+mod)%mod;
}

ll moddevide(ll a,ll b){return (a*modinv(b))%mod;}

vec modncrlistp,modncrlistm;

ll modncr(ll n,ll r){
  ll i,size=modncrlistp.size();
  if(size<=n){
    modncrlistp.resize(n+1);
    modncrlistm.resize(n+1);
    if(!size){
      modncrlistp[0]=modncrlistm[0]=1;
      size++;
    }
    For(i,size,n+1){
      modncrlistp[i]=modncrlistp[i-1]*i%mod;
      modncrlistm[i]=modinv(modncrlistp[i]);
    }
  }
  return modncrlistp[n]*modncrlistm[r]%mod*modncrlistm[n-r]%mod;
}

ll modpow(ll a,ll n){
  ll res=1;
  while(n){
    if(n&1)res=res*a%mod;
    a=a*a%mod;
    n>>=1;
  }
  return res;
}

ll gcd(ll a,ll b){if(!b)return a;return (a%b==0)?b:gcd(b,a%b);}
ll lcm(ll a,ll b){return a/gcd(a,b)*b;}

ll countdigits(ll n){
  ll ans=0;
  while(n){n/=10;ans++;}
  return ans;
}

ll sumdigits(ll n){
  ll ans=0;
  while(n){ans+=n%10;n/=10;}
  return ans;
}
struct p{
  ll a,b,i;
}
int main(){
  // startupcpp();
  // ll test;cin>>test;while(test--){
  ll i,j,N,ansa=0,ansb=0;
  cin>>N;
  vector<p> v(N),ev;
  rep(i,N)cin>>v[i].a>>v[i].b;
  ev=v;
  sort(all(v),[](p l,p r){
    if(abs(l.a-l.b)!=abs(r.a-r.b))return abs(l.a-l.b)>abs(r.a-r.b);
    else return l.a>r.a;
  });
  sort(all(ev),[](p l,p r){
    if(abs(l.a-l.b)!=abs(r.a-r.b))return abs(l.a-l.b)>abs(r.a-r.b);
    else return l.b>r.b;
  });
  vec ch(N,0);
  i=j=0;
  while(1){
    while(i<N&&ch[v[i].i])++i;
    if(i==N)break;
    ansa+=v[i].a;
    ch[v[i].i]=0;
    while(j<N&&ch[v[j].i])++j;
    if(j==N)break;
    ansb+=v[j].b;
    ch[v[j].i]=0;
  }
  print(ansa-ansb);
}

Compiler output:
a.cc:105:2: error: expected ';' after struct definition
  105 | }
      |  ^
      |  ;
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define all(v) (v).begin(),(v).end()
#define chmin(x,y) x = min(x,y)
#define chmax(x,y) x = max(x,y)
typedef pair<int, int> P;
typedef long long ll;
const int INF = 1001001001;
const ll LINF = 1001002003004005006ll;
const ll MOD = 1e9+7;
ll gcd(ll a, ll b) { return b?gcd(b,a%b):a;}
ll lcm(ll a, ll b) { return a/gcd(a,b)*b;}

int main() {
	int n;
	cin >> n;
    ll ans = 0;
    vector<ll> dif(n);
    rep(i,n) {
        ll a, b;
        cin >> a >> b;
        dif[i] = a+b;
        ans -= b;
    }
    sort(dif.begin(), dif.end());
    dif.reserve();
    rep(i,n) if(i%2==0) ans += dif[i];
	cout << ans << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:16: error: no matching function for call to 'std::vector<long long int>::reserve()'
   27 |     dif.reserve();
      |     ~~~~~~~~~~~^~
In file included from /usr/include/c++/14/vector:72,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53,
                 from a.cc:1:
/usr/include/c++/14/bits/vector.tcc:67:5: note: candidate: 'void std::vector<_Tp, _Alloc>::reserve(size_type) [with _Tp = long long int; _Alloc = std::allocator<long long int>; size_type = long unsigned int]'
   67 |     vector<_Tp, _Alloc>::
      |     ^~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/vector.tcc:67:5: note:   candidate expects 1 argument, 0 provided
Language: C++

#include <iostream>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;

int main()
{
    int n;
    cin >> n;
    ll a[100002], b[100002];
    P p[100002];
    for(int i = 0; i < n; i++){
        cin >> a[i] >> b[i];
        p[i] = P(a[i] + b[i], a[i]);
    }
    sort(p, p + n, greater<P>());
    ll t = 0, s = 0;
    for(int i = 0; i < n; i++){
        if(i % 2) s += p[i].first - p[i].second;
        else t += p[i].second;
    }
    cout << t - s << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   16 |     sort(p, p + n, greater<P>());
      |     ^~~~
      |     short
Language: C++

#pragma GCC optimize("O3")
#include<bits/stdc++.h> 
using namespace std;
using ll=long long;
typedef unsigned  uint;
typedef unsigned long long int ull;
typedef pair<ll,ll> P;
typedef pair<P,long double> Pi;
typedef pair <long double,int> Pd;
#define fi first
#define se second
#define all(v) (v).begin(),(v).end()
const ll inf=(1e18);
//const ll mod=1000000007;
const uint mod=998244353;
//ios_base::sync_with_stdio(false);
//cin.tie(NULL);
ll gcd(ll a,ll b) {return b ? gcd(b,a%b):a;}
ll lcm(ll c,ll d){return c/gcd(c,d)*d;}
template<class T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; }
int main(){
ios::sync_with_stdio(false);
cin.tie(NULL);
int n;
cin>>n;
ll suma,sumb;
vector<ll> d(n);
for(int i=0;i<n;i++){
    ll s,t;
    cin>>s>>t;
    suma+=s;
    sumb+=t;
    d[i]=s-t;
}
sort(all(s));
int l=0;r=n-1;
for(int i=0;i<n;i++){
   if(i%2==0&&d[l]<=0)sumb+=d[l++];
   else if(i%2==1&&d[r]>=0)suma-=d[r--];
}
cout<<suma-sumb<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:36:10: error: 's' was not declared in this scope
   36 | sort(all(s));
      |          ^
a.cc:12:17: note: in definition of macro 'all'
   12 | #define all(v) (v).begin(),(v).end()
      |                 ^
a.cc:37:9: error: 'r' was not declared in this scope
   37 | int l=0;r=n-1;
      |         ^