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

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

int main() {
	string s,a,b,rs,ra,rb;
	cin>>s;
	int n=s.length();
	
	a=str.substr(0,(n-1)/2-1);
	b=str.substr((n+3)/2-1);
	
	rs=s;
	reverse(rs.begin(),rs.end());
	ra=a;
	reverse(ra.begin(),ra.end());
	rb=b;
	reverse(rb.begin(),rb.end());
	
	if(s==rs&&a==ra&&b==rb)cout<<"Yes"<<endl;
	else cout<<"No"<<endl;
	
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: 'str' was not declared in this scope; did you mean 'std'?
   11 |         a=str.substr(0,(n-1)/2-1);
      |           ^~~
      |           std
Language: C++

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

int main(){
	string s;
	cin >> s;
	
	bool equal = true;
	rep(i, s.size()) {
		if (s.at(i) != s.at(s.size() - i - 1)) {
		equal = false;
		}
	}
	rep(i, (s.size()-1)/2) {
		if (s.at(i) != s.at((s.size()+1)/2)) {
			equal = false;
		}
	}
	
	if (equal) {
		cout << "Yes" << endl;
	} else {
		cout << "No" <, endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:31: error: expected primary-expression before ',' token
   24 |                 cout << "No" <, endl;
      |                               ^
Language: C++

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

bool  kaibunn (string S) {
  int i;
  for (i = 0; i < S.length(); i++ ) {
  if (S[i] == S[S.length() - i]) {
  continue;
  }
  else {
  return false;
  }
  }
  return true;
}

int main () {
string S;
string substr = str.substr(1,(S.length() - 1) / 2);
cin >> S;
if (kaibunn (S) && kaibunn (substr)) {
cout << "Yes" << endl;}
else {
cout << "No" << endl;}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:20:17: error: 'str' was not declared in this scope; did you mean 'std'?
   20 | string substr = str.substr(1,(S.length() - 1) / 2);
      |                 ^~~
      |                 std
Language: C++

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

bool  kaibunn (string S) {
  int i;
  for (i = 0; i < S.length(); i++ ) {
  if (S[i] == S[S.length() - i]) {
  continue;
  }
  else {
  return false;
  }
  }
  return true;
}

int main () {
string S;
string substr = str.substr(1,(S.length() - 1) / 2);
cin >> S;
if (kaibunn (S) && kaibunn (substr)) {
cout << "Yes" << endl;}
else {
cout << "No" << endl;}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:19:17: error: 'str' was not declared in this scope; did you mean 'std'?
   19 | string substr = str.substr(1,(S.length() - 1) / 2);
      |                 ^~~
      |                 std
Language: C++

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

bool  kaibunn (string S) {
  int i;
  for (i = 0; i < S.length(); i++ ) {
  if (S[i] == S[S.length() - i]) {
  continue;
  }
  else {
  return false;
  }
  }
  return true;
}

int main () {
string S;
str.substr (1,(S.length() - 1) / 2);
cin >> S;
if (kaibunn (S) && kaibunn (substr)) {
cout << "Yes" << endl;}
else {
cout << "No" << endl;}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:19:1: error: 'str' was not declared in this scope; did you mean 'std'?
   19 | str.substr (1,(S.length() - 1) / 2);
      | ^~~
      | std
a.cc:21:29: error: 'substr' was not declared in this scope; did you mean 'strstr'?
   21 | if (kaibunn (S) && kaibunn (substr)) {
      |                             ^~~~~~
      |                             strstr
Language: C++

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

bool  kaibunn (string S) {
  for (i = 0; i < S.length(); i++ ) {
  if (S[i] == S[S.length() - i]) {
  continue;
  }
  else {
  return false;
  }
  }
  return true;
  
int main () {
string S;
str.substr (1,(S.length() - 1) / 2);
cin >> S;
if (kaibunn (S) && kaibunn (substr)) {
cout << "Yes" << endl;}
else {
cout << "No" << endl;}
}



Compiler output:
a.cc: In function 'bool kaibunn(std::string)':
a.cc:5:8: error: 'i' was not declared in this scope
    5 |   for (i = 0; i < S.length(); i++ ) {
      |        ^
a.cc:15:10: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   15 | int main () {
      |          ^~
a.cc:15:10: note: remove parentheses to default-initialize a variable
   15 | int main () {
      |          ^~
      |          --
a.cc:15:10: note: or replace parentheses with braces to value-initialize a variable
a.cc:15:13: error: a function-definition is not allowed here before '{' token
   15 | int main () {
      |             ^
a.cc:23:2: error: expected '}' at end of input
   23 | }
      |  ^
a.cc:4:26: note: to match this '{'
    4 | bool  kaibunn (string S) {
      |                          ^
Language: C++

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

bool  kaibunn (S) {
  for (i = 0; i < S.length(); i++ ) {
  if (S[i] == S[S.length() - i]) {
  continue;
  }
  else {
  return false;
  }
  }
  return true;
  
int main () {
string S;
str.substr (1,(S.length() - 1) / 2);
cin >> S;
if (kaibunn (S) && kaibunn (substr)) {
cout << "Yes" << endl;}
else {
cout << "No" << endl;}
}



Compiler output:
a.cc:4:16: error: 'S' was not declared in this scope
    4 | bool  kaibunn (S) {
      |                ^
Language: C++

#include <iostream>
using namespace std;

bool isPalindrome(string s){
  for(int i=0;i<s.length()/2;i++){
    if(s[i]==s[s.length()-1-i]) continue;
    else return false;
  }
  return true;
}

int main(){
  string s;
  cin >> s;
  if(isPalidrome(s)&&isPalidrome(s.substr(0,s.length()/2))){
    cout << "Yes" << endl;
  }else{
    cout << "No" << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:6: error: 'isPalidrome' was not declared in this scope; did you mean 'isPalindrome'?
   15 |   if(isPalidrome(s)&&isPalidrome(s.substr(0,s.length()/2))){
      |      ^~~~~~~~~~~
      |      isPalindrome
Language: Java

import java.io.*;
public class Main{ public static void main(String...args) throws IOException{
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String subString = br.readLine(); int len = subString.length();
    String r1 = new StringBuilder(subString).reverse().toString(); String s1 = S.substring(0,(len-1)/2);
    String r2 = new StringBuffer(s1).reverse().toString(); String s2 = S.substring(((len+3)/2)-1, len);
    String r3 = new StringBuffer(s2).reverse().toString();
    if(subString.equals(r1) && s1.equals(r2) && s2.equals(r3)) System.out.println("Yes");
  	else System.out.println("No");}
}

Compiler output:
Main.java:5: error: cannot find symbol
    String r1 = new StringBuilder(subString).reverse().toString(); String s1 = S.substring(0,(len-1)/2);
                                                                               ^
  symbol:   variable S
  location: class Main
Main.java:6: error: cannot find symbol
    String r2 = new StringBuffer(s1).reverse().toString(); String s2 = S.substring(((len+3)/2)-1, len);
                                                                       ^
  symbol:   variable S
  location: class Main
2 errors
Language: C

int main(){
  char str[100];
  char *start_str = str;
  int len=0;
  scanf("%s",str);
  while(*start_str=='\0'){
    len++;
    start_str++;
  }
  int i;
  //S is palindrome
  for(i=0;i<len/2:i++){
    if(str[i]!=str[99-i]){
      printf("No");
      return 0;
    }
  }
  int front = (len-1)/2;
  for(i=0;i<front;i++){
    if(str[i]!=str[front-i]){
      printf("No");
      return 0;
    }
  }
  int rear = (len+3)/2;
  for(i=rear;i<len;i++){
    if(str[i]!=str[len-(i-rear)]){
      printf("No");
      return 0;
    }
  }
  printf("Yes");
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    5 |   scanf("%s",str);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main(){
main.c:5:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    5 |   scanf("%s",str);
      |   ^~~~~
main.c:5:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:12:18: error: expected ';' before ':' token
   12 |   for(i=0;i<len/2:i++){
      |                  ^
      |                  ;
main.c:14:7: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   14 |       printf("No");
      |       ^~~~~~
main.c:14:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:14:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:14:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:21:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   21 |       printf("No");
      |       ^~~~~~
main.c:21:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:28:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   28 |       printf("No");
      |       ^~~~~~
main.c:28:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:32:3: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   32 |   printf("Yes");
      |   ^~~~~~
main.c:32:3: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

int main(){
  char str[100];
  char *start_str = str;
  int len=0;
  scanf("%s",str);
  while(*start_str=="\0"){
    len++;
    start_str++;
  }
  int i;
  //S is palindrome
  for(i=0;i<len/2:i++){
    if(str[i]!=str[99-i]){
      printf("No");
      return 0;
    }
  }
  int front = (len-1)/2;
  for(i=0;i<front;i++){
    if(str[i]!=str[front-i]){
      printf("No");
      return 0;
    }
  }
  int rear = (len+3)/2;
  for(i=rear;i<len;i++){
    if(str[i]!=str[len-(i-rear)]){
      printf("No");
      return 0;
    }
  }
  printf("Yes");
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    5 |   scanf("%s",str);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main(){
main.c:5:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    5 |   scanf("%s",str);
      |   ^~~~~
main.c:5:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:6:19: warning: comparison between pointer and integer
    6 |   while(*start_str=="\0"){
      |                   ^~
main.c:12:18: error: expected ';' before ':' token
   12 |   for(i=0;i<len/2:i++){
      |                  ^
      |                  ;
main.c:14:7: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   14 |       printf("No");
      |       ^~~~~~
main.c:14:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:14:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:14:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:21:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   21 |       printf("No");
      |       ^~~~~~
main.c:21:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:28:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   28 |       printf("No");
      |       ^~~~~~
main.c:28:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:32:3: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   32 |   printf("Yes");
      |   ^~~~~~
main.c:32:3: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
  string str;
  int len=str.size();
  if(str.substr(str.begin(),str.begin()+len/2-1)==str.substr(str.begin()+len/2+1,str.begin()+len-1)){
    cout<<"Yes"<<endl;
  }else{
    cout<<"No"<<endl;
  }
  return(0);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:26: error: cannot convert 'std::__cxx11::basic_string<char>::iterator' to 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
    7 |   if(str.substr(str.begin(),str.begin()+len/2-1)==str.substr(str.begin()+len/2+1,str.begin()+len-1)){
      |                 ~~~~~~~~~^~
      |                          |
      |                          std::__cxx11::basic_string<char>::iterator
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:3208:24: note:   initializing argument 1 of 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::substr(size_type, size_type) const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
 3208 |       substr(size_type __pos = 0, size_type __n = npos) const
      |              ~~~~~~~~~~^~~~~~~~~
a.cc:7:79: error: cannot convert '__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >' to 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
    7 |   if(str.substr(str.begin(),str.begin()+len/2-1)==str.substr(str.begin()+len/2+1,str.begin()+len-1)){
      |                                                              ~~~~~~~~~~~~~~~~~^~
      |                                                                               |
      |                                                                               __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >
/usr/include/c++/14/bits/basic_string.h:3208:24: note:   initializing argument 1 of 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::substr(size_type, size_type) const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
 3208 |       substr(size_type __pos = 0, size_type __n = npos) const
      |              ~~~~~~~~~~^~~~~~~~~
Language: C++

#include <iostream>
using namespace std;
 
int main(){
  string s,ss,r,rr;
  cin>>s;
  int n=s.size();
  r=s;
  reverse(r.begin(),r.end());
  if(r==s){
    for(int i=0;i<(n-1)/2;i++){
      ss[i]=s[i];
    }
    rr=ss;
    if(reverse(rr.begin(),rr.end())==ss){
      for(int i=0;i<(n-1)/2;i++){
        ss[i]=s[i+(n+3)/2];
      }
      rr=ss;
      if(reverse(rr.begin(),rr.end())==ss){
        cout<<"Yes"<<endl;
        return 0;
      }
    }
  }
  cout<<"No"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'reverse' was not declared in this scope
    9 |   reverse(r.begin(),r.end());
      |   ^~~~~~~
Language: C++

#include <iostream>
using namespace std;
 
int main(){
  string s,ss,r;
  cin>>s;
  int n=s.size();
  r=reverse(s.begin(),s.end());
  if(r==s){
    for(int i=0;i<(n-1)/2;i++){
      ss[i]=s[i];
    }
    if(reverse(ss.begin(),ss.end())==ss){
      for(int i=0;i<(n-1)/2;i++){
        ss[i]=s[i+(n+3)/2];
      }
      if(reverse(ss.begin(),ss.end())==ss){
        cout<<"Yes"<<endl;
        return 0;
      }
    }
  }
  cout<<"No"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: 'reverse' was not declared in this scope
    8 |   r=reverse(s.begin(),s.end());
      |     ^~~~~~~
Language: C++

char &std::__cxx11::string::at(std::size_t __n)
+1 overload

@brief Provides access to the data contained in the %string.
@param __n The index of the character to access.
@return Read/write reference to the character.
@throw std::out_of_range If @a n is an invalid index.

This function provides for safer data access. The parameter is
first checked that it is in the range of the string. The function
throws out_of_range if the check fails.



Compiler output:
a.cc:4:1: error: stray '@' in program
    4 | @brief Provides access to the data contained in the %string.
      | ^
a.cc:5:1: error: stray '@' in program
    5 | @param __n The index of the character to access.
      | ^
a.cc:6:1: error: stray '@' in program
    6 | @return Read/write reference to the character.
      | ^
a.cc:7:1: error: stray '@' in program
    7 | @throw std::out_of_range If @a n is an invalid index.
      | ^
a.cc:7:29: error: stray '@' in program
    7 | @throw std::out_of_range If @a n is an invalid index.
      |                             ^
a.cc:1:12: error: 'std::__cxx11' has not been declared
    1 | char &std::__cxx11::string::at(std::size_t __n)
      |            ^~~~~~~
a.cc:1:37: error: 'size_t' is not a member of 'std'
    1 | char &std::__cxx11::string::at(std::size_t __n)
      |                                     ^~~~~~
Language: Java

import java.util.*;
import java.io.*;


public class Main {
  private static String checkP(String s, int start, int end) {
    int sum = start + end, limit = (sum % 2 == 0) ? (sum / 2) : ((sum / 2) - 1);
    for(int i = start, j = end; i <= limit; i++, --j) {
      if(s.charAt(i) != s.charAt(j)) return false;
    }
    return true;
  }
  public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    String s = in.next();
    int N = s.length();
    boolean flag = checkP(s, 0, ((N - 1)/2) - 1) && checkP(s, ((N + 3)/2) - 1, N - 1);
    System.out.println(flag ? "Yes" : "No");
  }
}

Compiler output:
Main.java:9: error: incompatible types: boolean cannot be converted to String
      if(s.charAt(i) != s.charAt(j)) return false;
                                            ^
Main.java:11: error: incompatible types: boolean cannot be converted to String
    return true;
           ^
Main.java:17: error: bad operand types for binary operator '&&'
    boolean flag = checkP(s, 0, ((N - 1)/2) - 1) && checkP(s, ((N + 3)/2) - 1, N - 1);
                                                 ^
  first type:  String
  second type: String
3 errors
Language: C++

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

int main() {
    
   string s;
   cin >> s;
   string swaped = s;
   reverse(swaped.begin(),swaped.end());
   int flag = 0;
   if (swaped == s) flag++;
  {
       string cut = s.substr(1,(s.length()-1)/2);
       string scut = cut;
       reverse(cot.begin(),cut.end());
       if ( s == scut) flag++;
  }
  {
      string cut = s.substr((s.length()+3)/2,s.length());
      string scut = cut;
      reverse(cot.begin(),cut.end());
      if ( s == scut) flag++;
  }
 
  string ans;
  if (flag == 3) ans = "Yes";
  else ans = "No";

   cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:16: error: 'cot' was not declared in this scope; did you mean 'cut'?
   16 |        reverse(cot.begin(),cut.end());
      |                ^~~
      |                cut
a.cc:22:15: error: 'cot' was not declared in this scope; did you mean 'cut'?
   22 |       reverse(cot.begin(),cut.end());
      |               ^~~
      |               cut
Language: C++

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

int main() {
    
   string s;
   cin >> s;
   string swaped = s;
   reverse(swaped.begin(),swaped.end());
   int flag = 0;
   if (swaped == s) flag++;
  {
       string cut = s.substr(1,(s.length()-1)/2);
       string scut = s;
       reverse(cot.begin(),cut.end());
       if ( s == scut) flag++;
  }
  {
      string cut = s.substr((s.length()+3)/2,s.length());
      string scut = s;
      reverse(cot.begin(),cut.end());
      if ( s == scut) flag++;
  }
  if (s.length()) flag = 3;
  string ans;
  if (flag == 3) ans = "Yes";
  else ans = "No";

   cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:16: error: 'cot' was not declared in this scope; did you mean 'cut'?
   16 |        reverse(cot.begin(),cut.end());
      |                ^~~
      |                cut
a.cc:22:15: error: 'cot' was not declared in this scope; did you mean 'cut'?
   22 |       reverse(cot.begin(),cut.end());
      |               ^~~
      |               cut
Language: C++

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

typedef long long int ll;
#define mamba() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

bool palindrome(string a)
{
  	/*ll b=a.size();
  	ll i=0;
	while(a[i]==a[b-i-1])
    {
    	if(i==(b-i-1))
        	return true;
      i++;
    }
  return false;*/
  string b(a.rbegin(),a.rend());
  if(a==b)
    return 1;
  else
    return 0;
  
}

int main()
{
	string a;cin>>a;ll n=a.size();
  	if(n==1)
    {cout<<"YES";return 0;}
  	string b,c;b=a.substr(0,(n-1)/2);
  			c=a.substr(((n+1)/2);
  	if(palindrome(a)&&palindrome(b)&&palindrome(c))
      	cout<<"YES";
  	else
      	cout<<"NO";
}


Compiler output:
a.cc: In function 'int main()':
a.cc:32:45: error: expected ')' before ';' token
   32 |                         c=a.substr(((n+1)/2);
      |                                   ~         ^
      |                                             )
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
string S;
  cin>>S;
  int N=S.size();
  if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2){
  
  cout<<"Yes"<<endl;
  }
   else{
   cout<<"No"<<endl;
   }

}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:52: error: expected ')' before '{' token
    7 |   if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2){
      |     ~                                              ^
      |                                                    )
a.cc:15:1: error: expected primary-expression before '}' token
   15 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
string S;
  cin>>S;
  int N=S.size();
  if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2)
  
  cout<<"Yes"<<endl;

   else
   cout<<"No"<<endl;
   

}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:52: error: expected ';' before 'cout'
    7 |   if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2)
      |                                                    ^
      |                                                    ;
    8 | 
    9 |   cout<<"Yes"<<endl;
      |   ~~~~                                              
a.cc:7:25: warning: ignoring return value of 'bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]', declared with attribute 'nodiscard' [-Wunused-result]
    7 |   if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2)
      |      ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
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:3755:5: note: declared here
 3755 |     operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
a.cc:11:4: error: expected primary-expression before 'else'
   11 |    else
      |    ^~~~
a.cc:9:21: error: expected ')' before 'else'
    9 |   cout<<"Yes"<<endl;
      |                     ^
      |                     )
   10 | 
   11 |    else
      |    ~~~~              
a.cc:7:5: note: to match this '('
    7 |   if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2)
      |     ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
string S;
  cin>>S;
  if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2){
  
  cout<<"Yes"<<endl;
  }
   else{
   cout<<"No"<<endl;
   }

}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:18: error: 'N' was not declared in this scope
    6 |   if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2){
      |                  ^
a.cc:6:52: error: expected ')' before '{' token
    6 |   if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2){
      |     ~                                              ^
      |                                                    )
a.cc:14:1: error: expected primary-expression before '}' token
   14 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
String S;
  cin>>S;
  if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2){
  
  cout<<"Yes"<<endl;
  }
   else{
   cout<<"No"<<endl;
   }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:1: error: 'String' was not declared in this scope
    4 | String S;
      | ^~~~~~
a.cc:5:8: error: 'S' was not declared in this scope
    5 |   cin>>S;
      |        ^
a.cc:6:18: error: 'N' was not declared in this scope
    6 |   if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2){
      |                  ^
a.cc:6:52: error: expected ')' before '{' token
    6 |   if(S.substr(0,(N-1)/2)==S.substr((N+3)/2,(N-1)/2){
      |     ~                                              ^
      |                                                    )
a.cc:14:1: error: expected primary-expression before '}' token
   14 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
string S;
  
  cin>>S;
  int N=S.size();
 string a;
  string b;
    for(int i=0;i<(N-1)/2;i++ ){
   a+= S.at(i);
     
  for(int j=0;j<(N-1)/2;j++){
  b+=S.at(N-1-j);
 
    
  }
    }
  if(a.at(i)==b.at(N-1-j)&&i==j){
    cout<<"Yes"<<endl;
    }
    else{
    cout<<"No"<<endl;
    }

}



Compiler output:
a.cc: In function 'int main()':
a.cc:19:11: error: 'i' was not declared in this scope
   19 |   if(a.at(i)==b.at(N-1-j)&&i==j){
      |           ^
a.cc:19:24: error: 'j' was not declared in this scope
   19 |   if(a.at(i)==b.at(N-1-j)&&i==j){
      |                        ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
string S;
  
  cin>>S;
  int N=S.size();
  vector<pair<string,int>>p;
  vector<pair<string,int>>q;
    for(int i=0;i<(N-1)/2;i++ ){
    cin>>p(S.at(i),i);
      
  for(int j=0;j<(N-1)/2;j++){
  cin>>q(S.at(N-1-j),j);
  
    if(S.at(i)==S.at(N-1-j)&&i==j){
    cout<<"Yes"<<endl;
    }
    else{
    cout<<"No"<<endl;
    }
  }
    }

}



Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: no match for call to '(std::vector<std::pair<std::__cxx11::basic_string<char>, int> >) (__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type&, int&)'
   11 |     cin>>p(S.at(i),i);
      |          ~^~~~~~~~~~~
a.cc:14:9: error: no match for call to '(std::vector<std::pair<std::__cxx11::basic_string<char>, int> >) (__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type&, int&)'
   14 |   cin>>q(S.at(N-1-j),j);
      |        ~^~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  string str;
  cin >> str;
  int N = str.size();
  bool fin = false;
  
  for(int i = 0; i < (N-1)/2; i++){
    if(str.at(i) != str.at(N-1) || str.at(i) != str.at((N-3)/2) || str.at((N+1)/2) != str.at((N-1)){
      fin = true;
   }
  }
  if(fin){
    cout << "No" << endl;
  }else{
    cout << "Yes" << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:100: error: expected ')' before '{' token
   10 |     if(str.at(i) != str.at(N-1) || str.at(i) != str.at((N-3)/2) || str.at((N+1)/2) != str.at((N-1)){
      |       ~                                                                                            ^
      |                                                                                                    )
a.cc:13:3: error: expected primary-expression before '}' token
   13 |   }
      |   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  string str;
  cin >> str;
  int N = str.size();
  bool fin = false;
  
  for(int i = 0; i < (N-1)/2; i++){
    if(str.at(i) != str.at(N-1) || str.at(i) != str.at((N-3)/2 || str.at((N+1)/2) != str.at(N-1)){
      fin = true;
   }
  }
  if(fin){
    cout << "No" << endl;
  }else{
    cout << "Yes" << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:98: error: expected ')' before '{' token
   10 |     if(str.at(i) != str.at(N-1) || str.at(i) != str.at((N-3)/2 || str.at((N+1)/2) != str.at(N-1)){
      |       ~                                                                                          ^
      |                                                                                                  )
a.cc:13:3: error: expected primary-expression before '}' token
   13 |   }
      |   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  string str;
  cin >> str;
  int N = str.size();
  bool fin = false;
  
  for(int i = 0; i < (N-1)/2; i++){
    if(str.at(i) != str.at(N-1)
       && str.at(i) != str.at((N-3)/2 
                              && str.at((N+1)/2) != str.at(N-1)){
      fin = true;
   }
  }
  if(fin){
    cout << "Yes" << endl;
  }else
    cout << "No" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:65: error: expected ')' before '{' token
   12 |                               && str.at((N+1)/2) != str.at(N-1)){
      |                                                                 ^
      |                                                                 )
a.cc:10:7: note: to match this '('
   10 |     if(str.at(i) != str.at(N-1)
      |       ^
a.cc:15:3: error: expected primary-expression before '}' token
   15 |   }
      |   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  string str;
  cin >> str;
  int N = str.size()
  bool fin = false;
  
  for(int i = 0; i < (N-1)/2; i++){
    if(str.at(i) != str.at(N-1)){
      fin = true;
   }else if(str.at(i) != str.at((N-3)/2)){
      fin = true;
   }else if(str.at((N+1)/2) != str.at(N-1)){
      fin = true;
    }
  }
  if(fin){
    cout << "No" << endl;
  }else
    cout << "Yes" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: expected ',' or ';' before 'bool'
    7 |   bool fin = false;
      |   ^~~~
a.cc:11:7: error: 'fin' was not declared in this scope; did you mean 'sin'?
   11 |       fin = true;
      |       ^~~
      |       sin
a.cc:13:7: error: 'fin' was not declared in this scope; did you mean 'sin'?
   13 |       fin = true;
      |       ^~~
      |       sin
a.cc:15:7: error: 'fin' was not declared in this scope; did you mean 'sin'?
   15 |       fin = true;
      |       ^~~
      |       sin
a.cc:18:6: error: 'fin' was not declared in this scope; did you mean 'sin'?
   18 |   if(fin){
      |      ^~~
      |      sin
Language: C++

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

is_palindrome(string s){
  bool ret = true;
  int i;
  const int N = s.size();
  for (i = 0; i < N/2; i++) {
    if (s.at(i) != s.at(N-1-i)) {
      ret = false;
      break;
    }
  }
  return ret;
}
int main() {
  string s; cin >> s;
  const int N = s.size();
  string a = s.substr(0, (N-1)/2);
  string b = s.substr((N+1)/2, N);
  bool ret = is_palindrome(a) && is_palindrome(b);
  
  if (ret)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}


Compiler output:
a.cc:7:1: error: ISO C++ forbids declaration of 'is_palindrome' with no type [-fpermissive]
    7 | is_palindrome(string s){
      | ^~~~~~~~~~~~~
Language: C++

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


bool hantei(string s){
  string t(s.rbegin(),s.rend())
    return s == t;
}

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


Compiler output:
a.cc: In function 'bool hantei(std::string)':
a.cc:7:5: error: expected ',' or ';' before 'return'
    7 |     return s == t;
      |     ^~~~~~
a.cc:8:1: warning: no return statement in function returning non-void [-Wreturn-type]
    8 | }
      | ^
a.cc: In function 'int main()':
a.cc:14:58: error: could not convert '((n + 1) / 2)' from 'int' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   14 |   if(hantei(s)&&hantei(s.substr(0,(n-1)/2))&&hantei((n+1)/2))
      |                                                     ~~~~~^~
      |                                                          |
      |                                                          int
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
bool pal(string s){
    string t(s.rbegin(),s.rend());
    return s == t;
}

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

Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: expected ',' or ';' before 'if'
   13 |   if(pal(s)&&pal(s.substr(0,(n-1)/2))&&pal(s.substr((n+1)/2))){
      |   ^~
a.cc:15:4: error: 'else' without a previous 'if'
   15 |   }else{
      |    ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int palindrome(string s1)
{int k=0,flag=1;
 int l=s1.size()-1;
 while(k<l)
 {if(s1[k]!=s1[l])
 {flag=0;
  break;}
  k++;
  l--;}
 return flag;}
int main()
{string s;
 cin>>s;
 if(palindrome(s))
 {string s1=s.substr(0,(n-1)/2);
  int u=((n+3)/2);
  string s2=s.substr(u-1,s.size()-u);
  if(palindrome(s1)&&palindrome(s2))
     cout<<"Yes";
  else
    cout<<"No";}
 else
   cout<<"No";}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:25: error: 'n' was not declared in this scope
   17 |  {string s1=s.substr(0,(n-1)/2);
      |                         ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i <(n); i++)
#define all(x) x.begin(), x.end()
using namespace std;
using ll = long long;
using p = pair<int,int>;

int main(){
  string s;
  cin >> s;
  int N = s.size();
  int a,b,c,d;
  a = 0;
  b = ((N-1)/2)-1;
  c = ((N+3)/2)-1;
  d = N-1;
  bool ans = 1
  while(a != b  || a+1 != b){
    if(s[a] == s[b]){
      a++;
      b--;
      continue;
    }
    else ans = 0;
  }
   while(c != d  || c+1 != d){
    if(s[c] == s[d]){
      c++;
      d--;
      continue;
    }
    else ans = 0;
  }
  if(ans)cout << "Yes" << endl;
  else cout << "No" << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:3: error: expected ',' or ';' before 'while'
   18 |   while(a != b  || a+1 != b){
      |   ^~~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i <(n); i++)
#define all(x) x.begin(), x.end()
using namespace std;
using ll = long long;
using p = pair<int,int>;

int main(){
  string s;
  cin >> s;
  int N = s.size();
  int a,b,c,d;
  a = 0;
  b = ((N-1)/2)-1;
  c = ((N+3)/2)-1;
  d = N-1;
  bool ans = 1
  while(a != b  || a+1 != b){
    if(s[a] == s[b]){
      a++;
      b--;
      continue;
    }
    else ans = 0;
  }
   while(c != d  || c+1 != d){
    if(s[c] == s[d]){
      c++;
      d--;
      continue;
    }
    else ans = 0;
  }
  if(ans)cout << "Yes" << endl;
  else cout << "No" << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:3: error: expected ',' or ';' before 'while'
   18 |   while(a != b  || a+1 != b){
      |   ^~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main()
{
    string s; cin >> s;
    bool isPalindrome = true;
    
    int n = s.size();
    for (int i = 1; i <= n; i++) {
            isPalindrome = false;
        }
        int mid1 = ((n-1)/2)-i;
        if (i-1 <= mid1) {
            if (s[i-1] != s[mid1]) {
                isPalindrome = false;
            }
        }
        int mid2 = (n+3)/2+i-2;
        if (mid2 <= n-i) {
            if (s[mid2] != s[n-i]) {
                isPalindrome = false;
            }
        }
    }
    
    cout << (isPalindrome ? "Yes" : "No") << endl;

}



Compiler output:
a.cc: In function 'int main()':
a.cc:14:30: error: 'i' was not declared in this scope
   14 |         int mid1 = ((n-1)/2)-i;
      |                              ^
a.cc: At global scope:
a.cc:28:5: error: 'cout' does not name a type
   28 |     cout << (isPalindrome ? "Yes" : "No") << endl;
      |     ^~~~
a.cc:30:1: error: expected declaration before '}' token
   30 | }
      | ^
Language: C++

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
    char s[100],s1[100],s2[100],s3[100],s4[100],s5[100];
    cin>>s;
    int l = strlen(s);
    int len = (l-1)/2;
    for(int i=0;i<len;i++)
        s1[i] = s[i];
    int k = (l+3)/2;
    int cnt = 0;
    for(int i =k-1;i<l;i++)
    {
        s2[cnt] = s[i];
        cnt ++;
    }
    for(int i =0;i<len;i++)
    {
        s3[i] = s1[i];
    }
    for(int i=0;i<cnt;i++)
        s4[i] = s2[i];
    for(int i = 0;i<l;i++)
        s5[i] = s[i];
    strrev(s4);
    strrev(s5);
    strrev(s3);
    if(strcmp(s3,s1)==0 && strcmp(s4,s2)==0 && strcmp(s,s5)==0 )
        cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:5: error: 'strrev' was not declared in this scope; did you mean 'strsep'?
   27 |     strrev(s4);
      |     ^~~~~~
      |     strsep
Language: C++

#include<bits/stdc++.h>
#include<cstring>
using namespace std;
int main()
{
    char s[100],s1[100],s2[100],s3[100],s4[100],s5[100];
    cin>>s;
    int l = strlen(s);
    int len = (l-1)/2;
    for(int i=0;i<len;i++)
        s1[i] = s[i];
    int k = (l+3)/2;
    int cnt = 0;
    for(int i =k-1;i<l;i++)
    {
        s2[cnt] = s[i];
        cnt ++;
    }
    for(int i =0;i<len;i++)
    {
        s3[i] = s1[i];
    }
    for(int i=0;i<cnt;i++)
        s4[i] = s2[i];
    for(int i = 0;i<l;i++)
        s5[i] = s[i];
    strrev(s4);
    strrev(s5);
    strrev(s3);
    if(strcmp(s3,s1)==0 && strcmp(s4,s2)==0 && strcmp(s,s5)==0 )
        cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:5: error: 'strrev' was not declared in this scope; did you mean 'strsep'?
   27 |     strrev(s4);
      |     ^~~~~~
      |     strsep
Language: C++

#include<bits/stdc++.h>
#include<string.h>
using namespace std;
int main()
{
    char s[100],s1[100],s2[100],s3[100],s4[100],s5[100];
    cin>>s;
    int l = strlen(s);
    int len = (l-1)/2;
    for(int i=0;i<len;i++)
        s1[i] = s[i];
    int k = (l+3)/2;
    int cnt = 0;
    for(int i =k-1;i<l;i++)
    {
        s2[cnt] = s[i];
        cnt ++;
    }
    for(int i =0;i<len;i++)
    {
        s3[i] = s1[i];
    }
    for(int i=0;i<cnt;i++)
        s4[i] = s2[i];
    for(int i = 0;i<l;i++)
        s5[i] = s[i];
    strrev(s4);
    strrev(s5);
    strrev(s3);
    if(strcmp(s3,s1)==0 && strcmp(s4,s2)==0 && strcmp(s,s5)==0 )
        cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:5: error: 'strrev' was not declared in this scope; did you mean 'strsep'?
   27 |     strrev(s4);
      |     ^~~~~~
      |     strsep
Language: C++

#include<iostream>
#include<string.h>
using namespace std;
int main()
{
    char s[100],s1[100],s2[100],s3[100],s4[100],s5[100];
    cin>>s;
    int l = strlen(s);
    int len = (l-1)/2;
    for(int i=0;i<len;i++)
        s1[i] = s[i];
    int k = (l+3)/2;
    int cnt = 0;
    for(int i =k-1;i<l;i++)
    {
        s2[cnt] = s[i];
        cnt ++;
    }
    for(int i =0;i<len;i++)
    {
        s3[i] = s1[i];
    }
    for(int i=0;i<cnt;i++)
        s4[i] = s2[i];
    for(int i = 0;i<l;i++)
        s5[i] = s[i];
    
    strrev(s4);
    strrev(s5);
    strrev(s3);
    
    if(strcmp(s3,s1)==0 && strcmp(s4,s2)==0 && strcmp(s,s5)==0 )
        cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:5: error: 'strrev' was not declared in this scope; did you mean 'strsep'?
   28 |     strrev(s4);
      |     ^~~~~~
      |     strsep
Language: C++

#include<bits/stdc++.h>
#include<string.h>
using namespace std;
int main()
{
    char s[100],s1[100],s2[100],s3[100],s4[100],s5[100];
    cin>>s;
    int l = strlen(s);
    int len = (l-1)/2;
    for(int i=0;i<len;i++)
        s1[i] = s[i];
    int k = (l+3)/2;
    int cnt = 0;
    for(int i =k-1;i<l;i++)
    {
        s2[cnt] = s[i];
        cnt ++;
    }
    for(int i =0;i<len;i++)
    {
        s3[i] = s1[i];
    }
    for(int i=0;i<cnt;i++)
        s4[i] = s2[i];
    for(int i = 0;i<l;i++)
        s5[i] = s[i];
    
    strrev(s4);
    strrev(s5);
    strrev(s3);
    
    if(strcmp(s3,s1)==0 && strcmp(s4,s2)==0 && strcmp(s,s5)==0 )
        cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:5: error: 'strrev' was not declared in this scope; did you mean 'strsep'?
   28 |     strrev(s4);
      |     ^~~~~~
      |     strsep
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
    char s[100],s1[100],s2[100],s3[100],s4[100],s5[100];
    cin>>s;
    int l = strlen(s);
    int len = (l-1)/2;
    for(int i=0;i<len;i++)
        s1[i] = s[i];
    int k = (l+3)/2;
    int cnt = 0;
    for(int i =k-1;i<l;i++)
    {
        s2[cnt] = s[i];
        cnt ++;
    }
    for(int i =0;i<len;i++)
    {
        s3[i] = s1[i];
    }
    for(int i=0;i<cnt;i++)
        s4[i] = s2[i];
    for(int i = 0;i<l;i++)
        s5[i] = s[i];
    strrev(s4);
    strrev(s5);
    strrev(s3);
    if(strcmp(s3,s1)==0 && strcmp(s4,s2)==0 && strcmp(s,s5)==0 )
        cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:5: error: 'strrev' was not declared in this scope; did you mean 'strsep'?
   26 |     strrev(s4);
      |     ^~~~~~
      |     strsep
Language: C

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

int main(void)
{
	char s[100];  
	int i;
  
    scanf("%s", s);
    int n = strlen(s);

    int f1 = 1;
  	int f2 = 1;
  
    for (i=0; i<n/4; i++) {
      if (s[i]!=s[n/2-1-i]) {
        f1 = 0;
        break;
      }
      
      if (s[i+n/2+1]!=s[n-1-i]) {
        f2 = 0;
      	breakl
      }
    }
  
    if (f1 && f2)
      printf("Yes\n");
  
    else
      printf("No\n");
  
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:23:9: error: 'breakl' undeclared (first use in this function)
   23 |         breakl
      |         ^~~~~~
main.c:23:9: note: each undeclared identifier is reported only once for each function it appears in
main.c:23:15: error: expected ';' before '}' token
   23 |         breakl
      |               ^
      |               ;
   24 |       }
      |       ~
Language: C

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

int main(void)
{
	char s[100];  
	int i;
  
    scanf("%s", s);
    int n = strlen(s);

    bool f1 = true;
  	bool f2 = true;
  
    for (i=0; i<n/4; i++) {
      if (s[i]!=s[n/2-1-i]) {
        f1 = false;
        break;
      }
      
      if (s[i+n/2+1]!=s[n-1-i]) {
        f2 = false;
      	breakl
      }
    }
  
    if (f1 && f2)
      printf("Yes\n");
  
    else
      printf("No\n");
  
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:12:5: error: unknown type name 'bool'
   12 |     bool f1 = true;
      |     ^~~~
main.c:3:1: note: 'bool' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
    2 | #include <string.h>
  +++ |+#include <stdbool.h>
    3 | 
main.c:12:15: error: 'true' undeclared (first use in this function)
   12 |     bool f1 = true;
      |               ^~~~
main.c:12:15: note: 'true' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:12:15: note: each undeclared identifier is reported only once for each function it appears in
main.c:13:9: error: unknown type name 'bool'
   13 |         bool f2 = true;
      |         ^~~~
main.c:13:9: note: 'bool' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:17:14: error: 'false' undeclared (first use in this function)
   17 |         f1 = false;
      |              ^~~~~
main.c:17:14: note: 'false' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:23:9: error: 'breakl' undeclared (first use in this function)
   23 |         breakl
      |         ^~~~~~
main.c:23:15: error: expected ';' before '}' token
   23 |         breakl
      |               ^
      |               ;
   24 |       }
      |       ~
Language: C

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

int main(void)
{
	char s[100];  

    scanf("%s", s);

    int n = strlen(s);
  	bool f1 = true;
  	bool f2 = true;
  
    for (i=0; i<n/4; i++) {
      if (s[i]!=s[n/2-1-i]) {
        f1 = false;
        break;
      }
      
      if (s[i+n/2+1]!=s[n-1-i]) {
        f2 = false;
      	breakl
      }
    }
  
    if (f1 && f2)
      printf("Yes\n");
  
    else
      printf("No\n");
  
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:11:9: error: unknown type name 'bool'
   11 |         bool f1 = true;
      |         ^~~~
main.c:3:1: note: 'bool' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
    2 | #include <string.h>
  +++ |+#include <stdbool.h>
    3 | 
main.c:11:19: error: 'true' undeclared (first use in this function)
   11 |         bool f1 = true;
      |                   ^~~~
main.c:11:19: note: 'true' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:11:19: note: each undeclared identifier is reported only once for each function it appears in
main.c:12:9: error: unknown type name 'bool'
   12 |         bool f2 = true;
      |         ^~~~
main.c:12:9: note: 'bool' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:14:10: error: 'i' undeclared (first use in this function)
   14 |     for (i=0; i<n/4; i++) {
      |          ^
main.c:16:14: error: 'false' undeclared (first use in this function)
   16 |         f1 = false;
      |              ^~~~~
main.c:16:14: note: 'false' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:22:9: error: 'breakl' undeclared (first use in this function)
   22 |         breakl
      |         ^~~~~~
main.c:22:15: error: expected ';' before '}' token
   22 |         breakl
      |               ^
      |               ;
   23 |       }
      |       ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
bool kaibun(string S,int x){
  bool b = false;
  for(i=0;i<x/2;i++){
    if(S[i] == S[-(i+1)]){
      b = true;
    }
  }
  return b;
}
int main() {
  string s1;
  cin >> s1;
  int n1 = s1.size();
  string s2 = s1.substr(0,(n1-1)/2);
  string s3 = s1.substr((n1+1)/1);
  int n2 = s2.size();
  int n3 = s3.size();
  if(kaibun(s1,n1)&&kaibun(s2,n2)&&kaibun(s3,n3)){
    cout << "Yes";
  }else{
    cout << "No";
  }
}


Compiler output:
a.cc: In function 'bool kaibun(std::string, int)':
a.cc:5:7: error: 'i' was not declared in this scope
    5 |   for(i=0;i<x/2;i++){
      |       ^
Language: Java

import java.io.*;
import java.util.*;

public class B
{
	public static void main(String[] args)
	{
		Scanner in = new Scanner(System.in);
		String s = in.next();
		if(isPalindrome(s.substring(0, (s.length() - 1) / 2)) && isPalindrome(s.substring((s.length() - 1) / 2)))
		{
			System.out.println("Yes");
		}
		else
		{
			System.out.println("No");
		}
	}
	
	public static boolean isPalindrome(String s)
	{
		for(int i = 0; i < s.length(); ++i)
		{
			if(s.charAt(i) != s.charAt(s.length() - 1 - i))
			{
				return false;
			}
		}
		return true;
	}
}


Compiler output:
Main.java:4: error: class B is public, should be declared in a file named B.java
public class B
       ^
1 error