criyle/codenet-compile-errors huggingface dataset:
Language: Java

import java.util.*;
import java.lang.*;
import java.io.*;
import java.math.*;
/* Name of the class has to be "Main" only if the class is public. */


/* Name of the class has to be "Main" only if the class is public. */
public class Main
    public static void main (String[] args) throws java.lang.Exception
    {
        Scanner s=new Scanner(System.in);
        int t=s.nextInt();
        String ss=s.nextLine();
        if(t%2==1)
        System.out.println("No");
        else if(!ss.substring(0,t/2).equals(ss.substring(t/2,t))){
        System.out.println("No");
        else
        System.out.println("Yes");
        }
        }

Compiler output:
Main.java:9: error: '{' expected
public class Main
                 ^
1 error
printing javac parameters to: /w/javac.20260128_104404.args
Language: C++

#include<iostream>
#include<bits/stdc++.h>
#include<stdio.h>
#include<string.h>
#include<conio.h>
using namespace std;
int main()
{
    char s[100], a[100], b[100];
    int i,n,m;
    int count=0;
    cin>>n;
    cin>>s;
    m=n/2;
    if(n%2==0)
    {
        for(i=0; i<m; i++)
        {
            a[i]=s[i];
        }
        for(i=0; i<m; i++)
        {
            b[i]=s[m+i];
        }
        for(i=0;i<m;i++)
        {
            if(a[i]!=b[i]) count++;
        }
        if(count==0) printf("Yes\n");
        else printf("No\n");
    }
    else printf("No\n");
}


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

#include<bits/stdc++.h>

using namespace std;
int main()
{
  long long int n;
  cin>>n;
  string s;
  cin>>s;
  if(!(n&1))
  {
    for(int i=0; i<n/2; i++)
    {
      if(s[i]!=s[n/2+i])
      {
        flag=1;
        break;
      }
      if(flag) cout<<"No";
      else cout<<"Yes";
    }
  } else cout<<"No";
  cout<<"\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:9: error: 'flag' was not declared in this scope
   16 |         flag=1;
      |         ^~~~
a.cc:19:10: error: 'flag' was not declared in this scope
   19 |       if(flag) cout<<"No";
      |          ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main() {
  int A;
  string B;
  
  cin >> A >> B;
  
  if(A/2 == 1) cout << "No" <<endl;
  else {
    if(B.substr(0,A/2) == B.substr(A/2,A/2))
       cout << "Yes" << endl;
  } if else {
    cout << "No" << endl;
  }
}

    


Compiler output:
a.cc: In function 'int main()':
a.cc:13:8: error: expected '(' before 'else'
   13 |   } if else {
      |        ^~~~
      |        (
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main() {
  int A;
  string B;
  
  cin >> A >> B;
  
  if(A/2 == 1) cout << "No" <<endl;
  else {
    if(B.substr(0,A/2) == B.substr(A/2,A/2))
       cout << "Yes" << endl;
  }else {
    cout << "No" << endl;
  }
}

    


Compiler output:
a.cc: In function 'int main()':
a.cc:13:4: error: 'else' without a previous 'if'
   13 |   }else {
      |    ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main() {
  int A;
  string B;
  
  cin >> A >> B;
  
  if(A/2 == 1) cout << "No" <<endl;
  else {
    if(B.substr(0,A/2) == B.substr(A/2,A/2))
       cout << "Yes" << endl;
  }else if {
    cout << "No" << endl;
  }
}

    


Compiler output:
a.cc: In function 'int main()':
a.cc:13:4: error: 'else' without a previous 'if'
   13 |   }else if {
      |    ^~~~
a.cc:13:12: error: expected '(' before '{' token
   13 |   }else if {
      |            ^
      |            (
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main() {
  int A;
  string B;
  
  cin >> A >> B;
  
  if(N/2 == 1) cout << "No" <<endl;
  else {
    if(B.substr(0,A/2) == B.substr(A/2,A/2))
       cout << "Yes" << endl;
  }else {
    cout << "No" << endl;
  }
}

    

Compiler output:
a.cc: In function 'int main()':
a.cc:9:6: error: 'N' was not declared in this scope
    9 |   if(N/2 == 1) cout << "No" <<endl;
      |      ^
a.cc:13:4: error: 'else' without a previous 'if'
   13 |   }else {
      |    ^~~~
Language: C

#include <stdio.h>
int main(){
  char a[101];
  int n,i;
  scanf("%d",&n);
  if(n%2 != 0){
    pirntf("No");
    return 0;
  }
  for(i=0;i<n;i++){
    scanf("%c",&a[i]);
  }
  for(i=0;i<n/2;i++){
  	if(a[i] != a[n/2+i]){
      printf("No");
      return 0;
    }
  }
  printf("Yes");
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:5: error: implicit declaration of function 'pirntf'; did you mean 'printf'? [-Wimplicit-function-declaration]
    7 |     pirntf("No");
      |     ^~~~~~
      |     printf
Language: C

#include<stdio.h>
#include<string.h>
main()
{
  int N;
  char S [N];
  char T [50];
  char TT[100];
  scanf("%d",&N);
  scanf("%s",S);
  if(N%2==0){
    strncpy(T,S,N/2);
    T[N/2]='\0';
    TT=T
     strcat(TT,T);
      if(S==TT){
    printf("Yes");}
    else{
      printf("No");
  }
  }
  else{
    printf("No");
  }
}
    
  


Compiler output:
main.c:3:1: error: return type defaults to 'int' [-Wimplicit-int]
    3 | main()
      | ^~~~
main.c: In function 'main':
main.c:14:7: error: assignment to expression with array type
   14 |     TT=T
      |       ^
main.c:14:9: error: expected ';' before 'strcat'
   14 |     TT=T
      |         ^
      |         ;
   15 |      strcat(TT,T);
      |      ~~~~~~
Language: C

#include<stdio.h>
#include<string.h>
main()
{
  int N;
  char S [N];
  char T [50];
  char *TT[100];
  scanf("%d",&N);
  scanf("%s",S);
  if(N%2==0){
    strncpy(T,S,N/2);
    T[N/2]='\0';
     TT=strcat(T,T);
      if(S==TT){
    printf("Yes");}
    else{
      printf("No");
  }
  }
  else{
    printf("No");
  }
}
    
  


Compiler output:
main.c:3:1: error: return type defaults to 'int' [-Wimplicit-int]
    3 | main()
      | ^~~~
main.c: In function 'main':
main.c:14:8: error: assignment to expression with array type
   14 |      TT=strcat(T,T);
      |        ^
main.c:15:11: warning: comparison of distinct pointer types lacks a cast [-Wcompare-distinct-pointer-types]
   15 |       if(S==TT){
      |           ^~
Language: C

#include<stdio.h>
#include<string.h>
main()
{
  int N;
  char S [N];
  char T [50];
  char TT[100];
  scanf("%d",&N);
  scanf("%s",S);
  if(N%2==0){
    strncpy(T,S,N/2);
    T[N/2]='\0';
     TT=strcat(T,T);
      if(S==TT){
    printf("Yes");}
    else{
      printf("No");
  }
  }
  else{
    printf("No");
  }
}
    
  


Compiler output:
main.c:3:1: error: return type defaults to 'int' [-Wimplicit-int]
    3 | main()
      | ^~~~
main.c: In function 'main':
main.c:14:8: error: assignment to expression with array type
   14 |      TT=strcat(T,T);
      |        ^
Language: C++

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

int main(){
  string a;
  int b;
  cin >> b >> a;
  int  ans =  1;
  if(b%2 == 1){
    cout << "No";
    break;
  } else {
  	for(int i =  0; i < b/2; i++){
      if(a[i] != a[b/2+i]) ans = 0;
    }
  }
  if(ans){
    cout << "Yes" ;
  } else {
    cout << "No" ;
  }
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:5: error: break statement not within loop or switch
   11 |     break;
      |     ^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	string str1,str2,str;
	cin >> n;
	cin >> str;
	if(n%2==0)
	{
		str1= s.substr(0,n/2);
		str2= s.substr(n/2,n);
		if(str1==str2)
			cout <<"Yes\n";
		else
			cout << "No\n";
	}
	else
		cout <<"No\n";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:23: error: 's' was not declared in this scope
   11 |                 str1= s.substr(0,n/2);
      |                       ^
Language: Java

import java.util.*;

public class BEcho {

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

		int N = sc.nextInt();
		String S = sc.next();

		if (S.length() <= 1) {
			System.out.println("No");
		}
		else {
			String left = S.substring(0, N / 2);
			String right = S.substring((N / 2));
			if (left != null && left.equals(right)) {
				System.out.println("Yes");
			}
			else {
				System.out.println("No");
			}
		}
	}
}


Compiler output:
Main.java:3: error: class BEcho is public, should be declared in a file named BEcho.java
public class BEcho {
       ^
1 error
Language: C++

#include<iostream>
#include<string>
#include<cstdio>
using namespace std;
int main(){
  string s;
  int n;
  cin>>n>>s;
  puts(n%2==0&&s.substr(0,n/2)==substr(n/2,n/2)?"Yes":"No");
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:33: error: 'substr' was not declared in this scope
    9 |   puts(n%2==0&&s.substr(0,n/2)==substr(n/2,n/2)?"Yes":"No");
      |                                 ^~~~~~
Language: C++

#include<iostream>
using namespace std;

int main(){
  int N, count = 0;
  char S[], S1[], S2[];

  cin >> N >> S;
  
  if(N%2 == 0){
    for(int i; i<N/2; i++){
      S1[i] = S[i];
      S2[i] = S[i+N/2];
    }
    for(int i; i<N/2; i++){
      if(S1[i] == S2[i]){
        count++;
      }
    }
  }
  if(count = N/2){
    cout << "Yes" << endl;
  }else{
    cout << "No" << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:8: error: storage size of 'S' isn't known
    6 |   char S[], S1[], S2[];
      |        ^
a.cc:6:13: error: storage size of 'S1' isn't known
    6 |   char S[], S1[], S2[];
      |             ^~
a.cc:6:19: error: storage size of 'S2' isn't known
    6 |   char S[], S1[], S2[];
      |                   ^~
Language: C++

#inlcude<bits/stdc++.h>
using namespace std;
int main(){
  
  int n,i=0;
  string s;
  cin >> n;
  cin >> s;
  if(n%2){
	for(i=0;i<n/2;i++){
      if(s.at(i) == s.at(i+n/2)) continue;
      else break;
    }
    if(i!=n/2) cout << "No" << endl;
    else cout << "Yes" << endl;
  }
  else cout << "No" << endl;
}


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:6:3: error: 'string' was not declared in this scope
    6 |   string s;
      |   ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | #inlcude<bits/stdc++.h>
a.cc:7:3: error: 'cin' was not declared in this scope
    7 |   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 | #inlcude<bits/stdc++.h>
a.cc:8:10: error: 's' was not declared in this scope
    8 |   cin >> s;
      |          ^
a.cc:14:16: error: 'cout' was not declared in this scope
   14 |     if(i!=n/2) cout << "No" << endl;
      |                ^~~~
a.cc:14:16: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:14:32: error: 'endl' was not declared in this scope
   14 |     if(i!=n/2) cout << "No" << endl;
      |                                ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #inlcude<bits/stdc++.h>
a.cc:15:10: error: 'cout' was not declared in this scope
   15 |     else cout << "Yes" << endl;
      |          ^~~~
a.cc:15:10: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:15:27: error: 'endl' was not declared in this scope
   15 |     else cout << "Yes" << endl;
      |                           ^~~~
a.cc:15:27: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
a.cc:17:8: error: 'cout' was not declared in this scope
   17 |   else cout << "No" << endl;
      |        ^~~~
a.cc:17:8: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:17:24: error: 'endl' was not declared in this scope
   17 |   else cout << "No" << endl;
      |                        ^~~~
a.cc:17:24: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#include<iostream>
#include<string>

int main(void)
{
  int n = 0;
  std::cin >> n;
  if(0 != n % 2)
  {
    std::cout << "No";
    return;
  }
  
  std::string str;
  std::cin >> str;
  std::cout << ((str.substr(0, n / 2) == str.substr(n / 2)) ? "Yes" : "No");
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:5: error: return-statement with no value, in function returning 'int' [-fpermissive]
   11 |     return;
      |     ^~~~~~
Language: C

#include <stdio.h>
int main (){
	int x = 0;
	
	//入力層
	int N ;
	scanf("%d",&N);
	char S[];
	scanf("%s",&S);
 
    //判定層
    if(N%2 == 0){
	    for(int i = 0; i < N/2 ;i++){
	   	    if(S[i] == S[N/2 + i])
			    x++;
	    }
    }
    else
        x--;
        
    //結果層
    printf("一致した文字数 = %d\n",x);
	if(x == N/2)
		printf("Yes");
	else
		printf("No");
 
 
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:14: error: array size missing in 'S'
    8 |         char S[];
      |              ^
Language: C++

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

int main (){
  string s,s1,s2;
  int n;
  cin>>n;
  s1=s.substring(0,n/2-1);
  s2=s.substring(n/2,n-1);
  if(s1==s2)
    cout<<"Yes";
  else
    cout<<"No";
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'substring'; did you mean 'substr'?
    8 |   s1=s.substring(0,n/2-1);
      |        ^~~~~~~~~
      |        substr
a.cc:9:8: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'substring'; did you mean 'substr'?
    9 |   s2=s.substring(n/2,n-1);
      |        ^~~~~~~~~
      |        substr
Language: C++

int main() {
 
  int n;
  string s;
  cin >> n;
  cin >> s;
  string ret = "Yes";
  if((n % 2) != 0)
  {
    ret = "No";#include <iostream>
using namespace std;

int main() {
 
  int n;
  string s;
  cin >> n;
  cin >> s;
  string ret = "Yes";
  if((n % 2) != 0)
  {
    ret = "No";
  }

  }
  else
  {
    if( s.substr( 0, (s.size() / 2)) == s.substr((s.size() / 2), (s.size()/2)))
      
       {
         ret = "Yes"; 
       }
    else
    {
      ret = "No";
    }
  }
  cout << ret << endl;
}

Compiler output:
a.cc:10:16: error: stray '#' in program
   10 |     ret = "No";#include <iostream>
      |                ^
a.cc: In function 'int main()':
a.cc:4:3: error: 'string' was not declared in this scope
    4 |   string s;
      |   ^~~~~~
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> n;
      |   ^~~
a.cc:6:10: error: 's' was not declared in this scope
    6 |   cin >> s;
      |          ^
a.cc:7:9: error: expected ';' before 'ret'
    7 |   string ret = "Yes";
      |         ^~~~
      |         ;
a.cc:10:5: error: 'ret' was not declared in this scope
   10 |     ret = "No";#include <iostream>
      |     ^~~
a.cc:10:17: error: 'include' was not declared in this scope
   10 |     ret = "No";#include <iostream>
      |                 ^~~~~~~
a.cc:10:26: error: 'iostream' was not declared in this scope
   10 |     ret = "No";#include <iostream>
      |                          ^~~~~~~~
a.cc:11:1: error: expected primary-expression before 'using'
   11 | using namespace std;
      | ^~~~~
a.cc:13:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   13 | int main() {
      |         ^~
a.cc:13:9: note: remove parentheses to default-initialize a variable
   13 | int main() {
      |         ^~
      |         --
a.cc:13:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:13:12: error: a function-definition is not allowed here before '{' token
   13 | int main() {
      |            ^
a.cc:26:3: error: expected '}' before 'else'
   26 |   else
      |   ^~~~
a.cc:9:3: note: to match this '{'
    9 |   {
      |   ^
a.cc:31:10: error: 'ret' was not declared in this scope
   31 |          ret = "Yes";
      |          ^~~
a.cc:35:7: error: 'ret' was not declared in this scope
   35 |       ret = "No";
      |       ^~~
a.cc:38:3: error: 'cout' was not declared in this scope
   38 |   cout << ret << endl;
      |   ^~~~
a.cc:38:11: error: 'ret' was not declared in this scope
   38 |   cout << ret << endl;
      |           ^~~
a.cc:38:18: error: 'endl' was not declared in this scope
   38 |   cout << ret << endl;
      |                  ^~~~
Language: C++

#include <iostream>
using namespace std;

int main(){
	int n;
	string s;
	cin>>n;
	cin>>s;
	if(r%2!=0)
		cout<<"No";
	else{
		for(int i=0;i<n/2;i++){
			if(r[i]==r[n/2+i])
				continue;
			else{
				cout<<"No";
				break;
			}
		}
		cout<<"Yes";
	}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:12: error: 'r' was not declared in this scope
    9 |         if(r%2!=0)
      |            ^
Language: Java

public class Main {
	public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);
      int N = sc.nextInt();
      String S = sc.next();
      
      if (N % 2 == 1) {
        System.out.println("No");
        return;
      }
      
      // 分解したものが一致するか比較
      if (S.substring(0, N/2).equals(S.substring(N/2, N)) {
        System.out.println("Yes");
      } else {
        System.out.println("No");
      }
    }
}

Compiler output:
Main.java:13: error: ')' expected
      if (S.substring(0, N/2).equals(S.substring(N/2, N)) {
                                                         ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int a;
  string s;
  cin>>a>>s;
  if(a==1){
    cout<<"No"<<"\n";
      return(0)
	}
  for(int i=0;i<a/2;i++){
    if(s[i]!=s[i+a/2]){
      cout<<"No"<<"\n";
      return(0);
    }
  }
  cout<<"Yes"<<"\n";
  return(0);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:16: error: expected ';' before '}' token
    9 |       return(0)
      |                ^
      |                ;
   10 |         }
      |         ~
Language: C++

#include <iostream>
#include <string>

using namespace std;

int main()
{
  int N;
  string s;
  cin >> s;
  if(s.length() % 2 != 0)
  {
    cout << "No" << endl;
  }
  else
  {
    if(s.substr(0, s.length()/2) == s.subtr(s.length()/2, s.length()/2))
    {
      cout << "Yes" << endl;
    }
    else
    {
      cout << "No" << endl;
    }
                                         
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:39: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'subtr'; did you mean 'substr'?
   17 |     if(s.substr(0, s.length()/2) == s.subtr(s.length()/2, s.length()/2))
      |                                       ^~~~~
      |                                       substr
a.cc:26:2: error: expected '}' at end of input
   26 | }
      |  ^
a.cc:7:1: note: to match this '{'
    7 | {
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
main(){
int N;
string S
  string T;
  cin>>N;
  cin>>S;
  if(N%2 ==1){
  cout<<"No"<<endl;
  return 0;}
for(int i =0;i<N/2;i++){
if(S.at(i)!=S.at(i+N/2)){
cout<<"No"<<endl;
  return 0;
}
}
  cout<<"Yes"<<endl;

Compiler output:
a.cc:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    3 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:6:3: error: expected initializer before 'string'
    6 |   string T;
      |   ^~~~~~
a.cc:8:8: error: 'S' was not declared in this scope
    8 |   cin>>S;
      |        ^
a.cc:18:21: error: expected '}' at end of input
   18 |   cout<<"Yes"<<endl;
      |                     ^
a.cc:3:7: note: to match this '{'
    3 | main(){
      |       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
string S;
int N;
 
void input() {
	cin >> N;
  	cin >> S;
}
 
void solve() {
	input();
	string tmp = "No";
	int K = N / 2;

Compiler output:
a.cc: In function 'void solve()':
a.cc:15:23: error: expected '}' at end of input
   15 |         int K = N / 2;
      |                       ^
a.cc:12:14: note: to match this '{'
   12 | void solve() {
      |              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
string S;
int N;
 
void input() {
    cin >> N;
    cin >> S;
}
 
void solve() {
    input();
    string tmp = "No";
    int K = N / 2;

Compiler output:
a.cc: In function 'void solve()':
a.cc:15:19: error: expected '}' at end of input
   15 |     int K = N / 2;
      |                   ^
a.cc:12:14: note: to match this '{'
   12 | void solve() {
      |              ^
Language: C++

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

int n;
string s,a;
int main(){
  cin>>n>>s;
  if(n%2==1){
    cout<<"No"<<endl;
  else{
     a=s.substr(0,n/2);
     a+=a;
     if(a==s){
       cout<<"Yes"<<endl;
     }
     else{
       cout<<"No"<<endl;
     }
  }
       

Compiler output:
a.cc: In function 'int main()':
a.cc:10:3: error: expected '}' before 'else'
   10 |   else{
      |   ^~~~
a.cc:8:13: note: to match this '{'
    8 |   if(n%2==1){
      |             ^
a.cc:19:4: error: expected '}' at end of input
   19 |   }
      |    ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include<string.h>
#include<stdio.h>
                #include<math.h>
                 
                int main(){
                  int n,i;
                  char s[n+1];
                  scanf("%d %s",&n,s);
                  
                  if(n%2 != 0){
                     printf("No");
                     break;
                  }
                  for(i=0;i<n/2;i++){
                      if(s[i] != s[n/2+i]){
                        printf("No");
                        return 0;
                      }
                  printf("Yes");
                  }
                  return 0;
                }

Compiler output:
a.cc: In function 'int main()':
a.cc:12:22: error: break statement not within loop or switch
   12 |                      break;
      |                      ^~~~~
Language: C++

#include<iostream>
using namespace std;
int main()
  {
  bool true;
  int n,i,j,k,m;
  cin>>n;
  int s;
  cin>>s;
   k=s.length()/2;
  for(i=0;i<k;i++)
    {
      for(j=k;j<=s.length();j++)
        {
           if(s[i]==s[j])
             continue;
           else 
             {
             false;
             break;
             }
        }
    
    }
  if(true)cout<<"Yes";
  else cout<<"No";
  return 0;
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: expected unqualified-id before 'true'
    5 |   bool true;
      |        ^~~~
a.cc:10:8: error: request for member 'length' in 's', which is of non-class type 'int'
   10 |    k=s.length()/2;
      |        ^~~~~~
a.cc:13:20: error: request for member 'length' in 's', which is of non-class type 'int'
   13 |       for(j=k;j<=s.length();j++)
      |                    ^~~~~~
a.cc:15:16: error: invalid types 'int[int]' for array subscript
   15 |            if(s[i]==s[j])
      |                ^
a.cc:15:22: error: invalid types 'int[int]' for array subscript
   15 |            if(s[i]==s[j])
      |                      ^
Language: C++

#include<iostream>
using namespace std;
int main()
  {
  bool true;
  int n,i,j,k,m;
  cin>>n;
  int s;
  cin>>s;
   k=s.length()/2;
  for(i=0;i<k;i++)
    {
      for(j=k;j<=s.length();j++)
        {
           if(s[i]==s[j])
             continue;
           else 
             {
             false;
             break;
             }
        }
    
    }
  if(ture)cout<<"Yes";
  else cout<<"No";
  return 0;
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: expected unqualified-id before 'true'
    5 |   bool true;
      |        ^~~~
a.cc:10:8: error: request for member 'length' in 's', which is of non-class type 'int'
   10 |    k=s.length()/2;
      |        ^~~~~~
a.cc:13:20: error: request for member 'length' in 's', which is of non-class type 'int'
   13 |       for(j=k;j<=s.length();j++)
      |                    ^~~~~~
a.cc:15:16: error: invalid types 'int[int]' for array subscript
   15 |            if(s[i]==s[j])
      |                ^
a.cc:15:22: error: invalid types 'int[int]' for array subscript
   15 |            if(s[i]==s[j])
      |                      ^
a.cc:25:6: error: 'ture' was not declared in this scope
   25 |   if(ture)cout<<"Yes";
      |      ^~~~
Language: C

#include<stdio.h>
#include<string.h>
int main(void)
{
  int n;
  int len,flg=0;
  char s[100000];
  
  scanf("%d %s",&n,s);
  len=strlen(s);
  for(int i=0;i<len/2;i++){
    if(a[i]!=a[len+i]){
      flg=1;
      break;
    }
  }
  if(flg==1){
    printf("No\n");
  }
  else{
    printf("Yes\n");
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:8: error: 'a' undeclared (first use in this function)
   12 |     if(a[i]!=a[len+i]){
      |        ^
main.c:12:8: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

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

int main(void){
  char str[128],str1[64],str2[64];
  int n;
  
  scanf_s("%d\n%s",n,str);
  strcpy(str1,str,n/2);
  for(int i=1;i<n;i++){
  	str2[i]=str[i+n/2];
  }
  if(str1==str2){
    printf("YES");
  }else{
    printf("NO");
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    8 |   scanf_s("%d\n%s",n,str);
      |   ^~~~~~~
      |   scanf
a.cc:9:9: error: too many arguments to function 'char* strcpy(char*, const char*)'
    9 |   strcpy(str1,str,n/2);
      |   ~~~~~~^~~~~~~~~~~~~~
In file included from a.cc:2:
/usr/include/string.h:141:14: note: declared here
  141 | extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
      |              ^~~~~~
Language: C++


#include <bits/stdc++.h>
//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("unroll-loops")
#define pb push_back
#define IOS                                                                    \
  ios_base::sync_with_stdio(false);                                            \
  cin.tie(0);                                                                  \
  cout.tie(0);cout<<fixed<<setprecision(16);
#define ll long long int
#define ld long double
#define el '\n'
#define El '\n'
#define PI (ld)3.141592653589793238462643383279502884197169399375105820974944
#define inf (ll)1000000000
#define mod (ll)1000000007
#define mod1 (ll)998244353
#define fo(i, n) for (long long i = 0; i < n; i++)
#define pll pair<ll, ll>
#define ml map<ll,ll>
#define vpl vector<pll>
#define vvl vector<vector<ll> >
#define vvpl vector< vector<pll> >
#define ff first
#define ss second
#define pqueue priority_queue< ll >
#define pdqueue priority_queue< ll,vl ,greater< ll > >
#define mem(a,b) memset(a,b,sizeof(a));
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define sz(a) (ll)a.size()
#define f(i,a,b) for(ll i=a;i<b;i++)
#define fd(i,a,b) for(ll i=a;i>=b;i--)
#define all(a) a.begin(),a.end()
#define vl vector<ll>
//#define x ff
//#define y ss
#define pt(a) for(auto it:a)cout<<it<<" ";cout<<endl;
unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();
using namespace std;

// vector
template<class T> istream& operator >> (istream &is , vector<T> &v) { for(T &a : v) is >> a; return is; }
template<class T> ostream& operator << (ostream &os , const vector<T> &v) { for(const T &t : v) os << t<<" "; return os << endl; }
// pair
template<class T, class U> ostream& operator << (ostream &os , const pair<T, U> &v) { return os << v.first << " " << v.second ; }

double gcd(double a, double b) { return a < 0.01 ? b : gcd(fmod(b, a), a); }

long long bpow(long long a, long long b, long long m) {
  a %= m;
  long long res = 1;
  while (b > 0) {
    if (b & 1)

      res = res * a % m;
      a = a * a % m;
      b >>= 1;
  }
  return res;
}


ll kv;
ll t,n,x,y,h,k,z,p,q,w,r;
string s,s1,s2;
//vvl v;
//vl vis,d;


int main() {
    IOS;cin>>n;
    cin>>s;
    n=sz(s);
    s1=s.substr(0,n/2);
    s2=s.substr(n/2,(n+1)/2);
    cout<<s1<<" "<<s2<<el;
    //if(s1==s2)cout<<"Yes"<<el;
    else cout<<"No";
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:80:5: error: 'else' without a previous 'if'
   80 |     else cout<<"No";
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
    string s;
    int n;
    ans="NO";
    cin>>n>>s;
    string t=s.substr(0,n/2);
    if(s==t+t) ans="YES";
        cout<<"YES"<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
    7 |     ans="NO";
      |     ^~~
      |     abs
Language: C++

					#include<bits/stdc++.h>

					#define sqr(x) (x)*(x)
					using namespace std;
					typedef long long ll;
					string s;
					int main()
					{
                    	cin >> s;
                      	if(s.size() & 1) return cout << "NO";
                      	else
                        for(int i = 0; i < s.size()/2; i++)
                          	if(s[i] != s[s.size()/2+i]) 
                              	return cout << "NO", 0;
                      	cout << "YES";
					}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:54: error: cannot convert 'std::basic_ostream<char>' to 'int' in return
   10 |                         if(s.size() & 1) return cout << "NO";
      |                                                 ~~~~~^~~~~~~
      |                                                      |
      |                                                      std::basic_ostream<char>
Language: C

#include <stdio.h>

void judge(int n,char w[]) {
  int i;
  if(n%2 = 1)
    puts("No");
  else
    for(i = 0;i < n/2;i++) {
      if(w[i] != w[i + n/2])
        puts("No");
      if(i == (n/2-1))
        puts("Yes");
    }
}

int main(void) {
  int n;
  scanf("%d",&n);
  char w[n];
  scanf("%s",w);
  judge(n,w);
}

Compiler output:
main.c: In function 'judge':
main.c:5:10: error: lvalue required as left operand of assignment
    5 |   if(n%2 = 1)
      |          ^
Language: C

#include <stdio.h>

void judge(int n,char w[]) {
  int i;
  int n = 0;
  if(n%2 ==1) 
    puts("No");
  else {
  for(i = 0;i < n/2;i++)
  {
    if(w[i] != w[i + n/2])
      puts("No");
    if(i == (n/2 - 1))
      puts("Yes");
  }
  }
}

int main(void) {
  int n;
  scanf("%d",&n);
  char w[n];
  scanf("%s",w[n]);
  judge(n,w);
}
  

Compiler output:
main.c: In function 'judge':
main.c:5:7: error: 'n' redeclared as different kind of symbol
    5 |   int n = 0;
      |       ^
main.c:3:16: note: previous definition of 'n' with type 'int'
    3 | void judge(int n,char w[]) {
      |            ~~~~^
Language: C++

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

int main(void) {
    int n;
    string s;

    cin >> n;
    cin >> s;

    for (int i = 0; i < n; i++) {
        if(s[i] != s[i + n / 2] {
            cout << "No";
            return 0;
        }
    }
    cout << "Yes";
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:32: error: expected ')' before '{' token
   12 |         if(s[i] != s[i + n / 2] {
      |           ~                    ^~
      |                                )
a.cc:16:5: error: expected primary-expression before '}' token
   16 |     }
      |     ^
Language: C++

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

int main(void) {
    int n;
    string s;

    cin >> n;
    cin >> s;

    for (int i = 0; i < n; i++) {
        if(s(i) != s(i + n / 2) {
            cout << "No";
            return 0;
        }
    }
    cout << "Yes";
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:13: error: no match for call to '(std::string {aka std::__cxx11::basic_string<char>}) (int&)'
   12 |         if(s(i) != s(i + n / 2) {
      |            ~^~~
a.cc:12:21: error: no match for call to '(std::string {aka std::__cxx11::basic_string<char>}) (int)'
   12 |         if(s(i) != s(i + n / 2) {
      |                    ~^~~~~~~~~~~
a.cc:12:32: error: expected ')' before '{' token
   12 |         if(s(i) != s(i + n / 2) {
      |           ~                    ^~
      |                                )
a.cc:16:5: error: expected primary-expression before '}' token
   16 |     }
      |     ^
Language: C++

#include<bits/stdc++.h>
using namespace std ;
vector<int>vc;
vector<int>cv;
int l;
int main ( ) {
int n ;
cin >> n ;
string s ;
cin>>s;
if ( n % 2 != 0 ){
    cout<<"No";
}
else if ( n % 2 == 0){
    for(int i = 0 ; i < n/2 ; i ++ ){
        vc.push_back(s[i]);
    }
    for(int j = n/2 ; j < n ; j ++ ){
        cv.push_back(s[j]);
    }
    for(int i=0;i< n/2 ; i ++ ){
        for(int j = n/2 ; j < n ; j ++ ){
        }
        if(vc[i]==cv[j]){
            l++;
        }
    }
    if ( l = n/2 ){
        cout<<"Yes";
    }
    else {
        cout<<"No";
    }
}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:22: error: 'j' was not declared in this scope
   24 |         if(vc[i]==cv[j]){
      |                      ^
Language: C++

N=int(input())
S=input()

flag=0

if N%2==0:
    for i in range(int(N/2)):
        if S[i]!=S[i+3]:
            flag+=1

    if flag==0:
        print('Yes')
    else:
        print('No')
else:
    print('No')

Compiler output:
a.cc:12:15: warning: multi-character character constant [-Wmultichar]
   12 |         print('Yes')
      |               ^~~~~
a.cc:14:15: warning: multi-character character constant [-Wmultichar]
   14 |         print('No')
      |               ^~~~
a.cc:16:11: warning: multi-character character constant [-Wmultichar]
   16 |     print('No')
      |           ^~~~
a.cc:1:1: error: 'N' does not name a type
    1 | N=int(input())
      | ^
Language: C++

#include <iostream>
using namespace std;
int main(){
  int n;
  cin >> n;
  char *s = new char[n];
  cin >> s;
  if(n%2==1)cout << "No" << endl;
  else{
    bool flag;
    for(int i=0;i<(n/2);i++){
      if(s[i] != s[i+(n/2)]){
        flag = true;
        break;
      }
    }
  }
  if(flag)cout << "No" << endl;
  else cout << "Yes" << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:6: error: 'flag' was not declared in this scope
   18 |   if(flag)cout << "No" << endl;
      |      ^~~~
Language: Java

import java.util.Scanner;

public class Main {
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    String s = sc.next();
    
    String s1 = s.substring(0, (int)(n/2));
    String s2 = s.substring((int)(n/2), n);
    System.out.println(s1.equals(s2) ? "Yes" : "No")
  }
}

Compiler output:
Main.java:11: error: ';' expected
    System.out.println(s1.equals(s2) ? "Yes" : "No")
                                                    ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
int i=1;
int a;
string b;
int main(){
  cin>>a>>b;
  if(a%2==1)i=0;
  for(j=0;j<a/2;j++){
    if(b[j]!=b[j+a/2])i=0;
  }
  if(i==1)cout<<"Yes"<<endl;
  else cout<<"No"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: 'j' was not declared in this scope; did you mean 'jn'?
    9 |   for(j=0;j<a/2;j++){
      |       ^
      |       jn
Language: C++

#include<bits/stdc++.h>
using namespace std;
int i=1,a;
string b;
int main(){
  cin>>a>>b;
  if(a%2==1)i=0;
  for(j=0;j<a/2;j++)if(b[j]!=b[j+a/2])i=0;
  if(i)cout<<"Yes"<<endl;
  else cout<<"No"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'j' was not declared in this scope; did you mean 'jn'?
    8 |   for(j=0;j<a/2;j++)if(b[j]!=b[j+a/2])i=0;
      |       ^
      |       jn
Language: C++

#include<bits/stdc++.h>
using namespace std;
int i=1;
int a;
string b;
int main(){
  cin>>a>>b;
  if(a%2==1)i=0;
  for(j=0,j<a/2,j++)if(b[j]!=b[j+a/2])i=0;
  if(i)cout<<"Yes"<<endl;
  else cout<<"No"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: 'j' was not declared in this scope; did you mean 'jn'?
    9 |   for(j=0,j<a/2,j++)if(b[j]!=b[j+a/2])i=0;
      |       ^
      |       jn
a.cc:10:3: error: expected primary-expression before 'if'
   10 |   if(i)cout<<"Yes"<<endl;
      |   ^~
a.cc:9:43: error: expected ';' before 'if'
    9 |   for(j=0,j<a/2,j++)if(b[j]!=b[j+a/2])i=0;
      |                                           ^
      |                                           ;
   10 |   if(i)cout<<"Yes"<<endl;
      |   ~~                                       
a.cc:10:3: error: expected primary-expression before 'if'
   10 |   if(i)cout<<"Yes"<<endl;
      |   ^~
a.cc:9:43: error: expected ')' before 'if'
    9 |   for(j=0,j<a/2,j++)if(b[j]!=b[j+a/2])i=0;
      |      ~                                    ^
      |                                           )
   10 |   if(i)cout<<"Yes"<<endl;
      |   ~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int i=1,a;
string b;
int main(){
  cin>>a>>b;
  if(a%2==1)i=0;
  for(j=0,j<a/2,j++)if(b[j]!=b[j+a/2])i=0;
  if(i)cout<<"Yes"<<endl;
  else cout<<"No"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'j' was not declared in this scope; did you mean 'jn'?
    8 |   for(j=0,j<a/2,j++)if(b[j]!=b[j+a/2])i=0;
      |       ^
      |       jn
a.cc:9:3: error: expected primary-expression before 'if'
    9 |   if(i)cout<<"Yes"<<endl;
      |   ^~
a.cc:8:43: error: expected ';' before 'if'
    8 |   for(j=0,j<a/2,j++)if(b[j]!=b[j+a/2])i=0;
      |                                           ^
      |                                           ;
    9 |   if(i)cout<<"Yes"<<endl;
      |   ~~                                       
a.cc:9:3: error: expected primary-expression before 'if'
    9 |   if(i)cout<<"Yes"<<endl;
      |   ^~
a.cc:8:43: error: expected ')' before 'if'
    8 |   for(j=0,j<a/2,j++)if(b[j]!=b[j+a/2])i=0;
      |      ~                                    ^
      |                                           )
    9 |   if(i)cout<<"Yes"<<endl;
      |   ~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int a;
  cin>>a;
  string b,d;
  cin>>b;
  bool c=false;
  for(int i=0,i<a/2,i++)d[i]=b[i];
  string e=d+d;
  if(b==d)c=true;
  if(c)cout<<"Yes"<<endl;
  else cout<<"No"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:16: error: expected ';' before '<' token
    9 |   for(int i=0,i<a/2,i++)d[i]=b[i];
      |                ^
      |                ;
a.cc:9:16: error: expected primary-expression before '<' token
a.cc:9:24: error: expected ';' before ')' token
    9 |   for(int i=0,i<a/2,i++)d[i]=b[i];
      |                        ^
      |                        ;
Language: C++

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

int main() {
  int i, n;
  int s=0;
  string s0, s1, s2;
  cin >> n >> s0;
  
  if(n==0||n%2==1){
    cout << "No" << endl;
  }
  else{
    for(i=0;i<n/2;i++){
      s1=s0.at(i);
      s2=s0.at(i+n/2);
      if(s1==s2){
        s++;
      }
    }
    if(s==n/2){
      cout << "Yes" << endl;
    }
    else{
      cour << "No" << endl;
    }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:7: error: 'cour' was not declared in this scope
   25 |       cour << "No" << endl;
      |       ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef set<int> si;
typedef map<string, int> msi;
typedef long long ll;

int main()
{
  int n, s;
  cin >> n >> s;
  if (n & 1)
    puts("No");
  else
  {
    if (s.substr(0, n / 2) == s.substr(n / 2, n / 2))
      puts("Yes");
    else
    {
      puts("No")
    }
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:11: error: request for member 'substr' in 's', which is of non-class type 'int'
   20 |     if (s.substr(0, n / 2) == s.substr(n / 2, n / 2))
      |           ^~~~~~
a.cc:20:33: error: request for member 'substr' in 's', which is of non-class type 'int'
   20 |     if (s.substr(0, n / 2) == s.substr(n / 2, n / 2))
      |                                 ^~~~~~
a.cc:24:17: error: expected ';' before '}' token
   24 |       puts("No")
      |                 ^
      |                 ;
   25 |     }
      |     ~
Language: C++

include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
  	cin>>n;
  	vector<char>s1(n);
  	vector<char>s2(n);
  	for(int i=0;i<n;i++){
    	cin>>s1[i];
    }
  	
  	if(n%2==1){
    cout<<"No"<<endl;
    }
  	else {
    	for(int i=0;i<n/2;i++){
        	s2[i]=s1[i];
          	s2[i+(n/2)]=s1[i];
        }
    
  		int a=0;
  		for(int i=0;i<n;i++){
    		if(s1[i]==s2[i]){
    			a++;
    		}
		}
  		if(a==n){
     		cout<<"Yes"<<endl;
    	}
  		else{
     		cout<<"No"<<endl;
     }
        }
    	}

Compiler output:
a.cc:1:1: 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>>n;
      |         ^~~
a.cc:6:9: error: 'vector' was not declared in this scope
    6 |         vector<char>s1(n);
      |         ^~~~~~
a.cc:6:16: error: expected primary-expression before 'char'
    6 |         vector<char>s1(n);
      |                ^~~~
a.cc:7:16: error: expected primary-expression before 'char'
    7 |         vector<char>s2(n);
      |                ^~~~
a.cc:9:14: error: 's1' was not declared in this scope
    9 |         cin>>s1[i];
      |              ^~
a.cc:13:5: error: 'cout' was not declared in this scope
   13 |     cout<<"No"<<endl;
      |     ^~~~
a.cc:13:17: error: 'endl' was not declared in this scope
   13 |     cout<<"No"<<endl;
      |                 ^~~~
a.cc:17:17: error: 's2' was not declared in this scope
   17 |                 s2[i]=s1[i];
      |                 ^~
a.cc:17:23: error: 's1' was not declared in this scope
   17 |                 s2[i]=s1[i];
      |                       ^~
a.cc:23:20: error: 's1' was not declared in this scope
   23 |                 if(s1[i]==s2[i]){
      |                    ^~
a.cc:23:27: error: 's2' was not declared in this scope
   23 |                 if(s1[i]==s2[i]){
      |                           ^~
a.cc:28:17: error: 'cout' was not declared in this scope
   28 |                 cout<<"Yes"<<endl;
      |                 ^~~~
a.cc:28:30: error: 'endl' was not declared in this scope
   28 |                 cout<<"Yes"<<endl;
      |                              ^~~~
a.cc:31:17: error: 'cout' was not declared in this scope
   31 |                 cout<<"No"<<endl;
      |                 ^~~~
a.cc:31:29: error: 'endl' was not declared in this scope
   31 |                 cout<<"No"<<endl;
      |                             ^~~~
Language: C++

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

int main(){
  int n;
  string S;
  cin >> n >> S;
  string U;
  
  for(int i = 0;i < n / 2; i++){
    U += S[i];
  }
  
  if(U+U == S){
    cout << "Yes" << endl;
  }else{
    cout << "No" << endl;
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:19:4: error: expected '}' at end of input
   19 |   }
      |    ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

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

int N;
string S;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	cin >> N >> S;
	if (N % 2 == 0) {
		for (int i = 0; i < (N / 2); i++) {
			if (S[i] != S[i + (N / 2)]) {
				cout << "NO" << "\n";
				return 0;
			}
		}
		cout << "YES" << "\n";
	}
	else 
		cout << "NO" << "\n";
  return 0;
}

Compiler output:
a.cc:1:1: error: 'nclude' does not name a type
    1 | nclude <bits/stdc++.h>
      | ^~~~~~
a.cc:5:1: error: 'string' does not name a type
    5 | string S;
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:8:9: error: 'ios_base' has not been declared
    8 |         ios_base::sync_with_stdio(0);
      |         ^~~~~~~~
a.cc:9:9: error: 'cin' was not declared in this scope
    9 |         cin.tie(0);
      |         ^~~
a.cc:11:21: error: 'S' was not declared in this scope
   11 |         cin >> N >> S;
      |                     ^
a.cc:15:33: error: 'cout' was not declared in this scope
   15 |                                 cout << "NO" << "\n";
      |                                 ^~~~
a.cc:19:17: error: 'cout' was not declared in this scope
   19 |                 cout << "YES" << "\n";
      |                 ^~~~
a.cc:22:17: error: 'cout' was not declared in this scope
   22 |                 cout << "NO" << "\n";
      |                 ^~~~
Language: C++

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

int N;
string S;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	cin >> N >> S;
	if (N % 2 == 0) {
		for (int i = 0; i < (N / 2); i++) {
			if (S[i] != S[i + (N / 2)]) {
				cout << "NO" << "\n";
				return 0;
			}
		}
		cout << "YES" << "\n";
	}
	else 
		cout << "NO" << "\n";
}

Compiler output:
a.cc:1:1: error: 'nclude' does not name a type
    1 | nclude <bits/stdc++.h>
      | ^~~~~~
a.cc:5:1: error: 'string' does not name a type
    5 | string S;
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:8:9: error: 'ios_base' has not been declared
    8 |         ios_base::sync_with_stdio(0);
      |         ^~~~~~~~
a.cc:9:9: error: 'cin' was not declared in this scope
    9 |         cin.tie(0);
      |         ^~~
a.cc:11:21: error: 'S' was not declared in this scope
   11 |         cin >> N >> S;
      |                     ^
a.cc:15:33: error: 'cout' was not declared in this scope
   15 |                                 cout << "NO" << "\n";
      |                                 ^~~~
a.cc:19:17: error: 'cout' was not declared in this scope
   19 |                 cout << "YES" << "\n";
      |                 ^~~~
a.cc:22:17: error: 'cout' was not declared in this scope
   22 |                 cout << "NO" << "\n";
      |                 ^~~~
Language: C

#include <stdio.h>

main()
{
    char str[101];
    int len;
    int JudgeNum;

    scanf("%d", &len);
    scanf("%s", &str);

    if(len % 2 == 0)
    {
        printf("No");
    }

    JudgeNum = len / 2;

    for(i = 0; i < JudgeNum; i++)
    {
        if(str[i + JudgeNum] == str[i])
        {
            printf("No");
        }
    }

    printf("Yes");
}

Compiler output:
main.c:3:1: error: return type defaults to 'int' [-Wimplicit-int]
    3 | main()
      | ^~~~
main.c: In function 'main':
main.c:19:9: error: 'i' undeclared (first use in this function)
   19 |     for(i = 0; i < JudgeNum; i++)
      |         ^
main.c:19:9: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

main()
{
    char str[100];
    int len;
    int JudgeNum;

    scanf("%d", &len);
    scanf("%s", &str);

    if(len % 2 == 0)
    {
        printf("No");
    }

    JudgeNum = len / 2;

    for(i = 0; i < JudgeNum; i++)
    {
        if(str[i + JudgeNum] == str[i])
        {
            printf("No");
        }
    }

    printf("Yes");
}

Compiler output:
main.c:3:1: error: return type defaults to 'int' [-Wimplicit-int]
    3 | main()
      | ^~~~
main.c: In function 'main':
main.c:19:9: error: 'i' undeclared (first use in this function)
   19 |     for(i = 0; i < JudgeNum; i++)
      |         ^
main.c:19:9: 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 N;
  cin >> N;
  string S, T, C;
  
  if( N % 2 != 0)
    cout<< "No" << endl;
  
  for(int i = 0; i < N/2; i++){
    T[i] = S[i+N/2];
  }
  C = T + T;
  for(int i = 0; i < N; i++){
    if(S[i] != C[i]){
      cout<< "No" << endl;
    }
  }
　cout << "Yes" <<endl;
}


Compiler output:
a.cc:21:1: error: extended character 　 is not valid in an identifier
   21 | 　cout << "Yes" <<endl;
      | ^
a.cc: In function 'int main()':
a.cc:21:1: error: '\U00003000cout' was not declared in this scope
   21 | 　cout << "Yes" <<endl;
      | ^~~~~~