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

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

bool check(string s){
 string curr = s;
 reverse(curr.begin(), curr.end());
 return curr == s;
}

int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr), cout.tie(nullptr);
  string s1 =  "", s2 = "", s;
  cin >> s; int len = s.size();
  if (s.size() == 1) {cout << "No" << endl; return 0;}
  for (int i = 0; i < (len - 1) / 2; i++) s1 += s[i]
  for (int i = (len + 3) / 2 - 1; i < len; i++) s2 += s[i];
  if (check(s1) && check(s2)) cout << "Yes" << endl;
  else cout << "No" << endl; 
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:53: error: expected ';' before 'for'
   16 |   for (int i = 0; i < (len - 1) / 2; i++) s1 += s[i]
      |                                                     ^
      |                                                     ;
   17 |   for (int i = (len + 3) / 2 - 1; i < len; i++) s2 += s[i];
      |   ~~~                                                
a.cc:17:35: error: 'i' was not declared in this scope
   17 |   for (int i = (len + 3) / 2 - 1; i < len; i++) s2 += s[i];
      |                                   ^
Language: C++

#include <algorithm>
#include <climits>
#include <cmath>
#include <iostream>
#include <map>
#include <set>
#include <string>
#include <vector>
#include <deque>
 
// author:Swastik Banerjee
 
using namespace std;
 
typedef long long ll;
#define MOD 1000000007
 
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
 

 
 
  string s; cin>>s;

  string s1,s2;

  for(int i=0;i<s.size()/2;i++){
    s1+=s[i];
  }

  for(int i=s.size()/2 +1;i<s.size();i++){
    s2+=s[i];
  }

  string check1=reverse(s.begin(),s.end());
  string check2=reverse(s1.begin(),s1.end());
  string check3= reverse(s2.begin(),s2.end());

  if(check1==s && check2==s1 && check3==s2)
    cout<<"Yes";
  else
    cout<<"No";



  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:24: error: conversion from 'void' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
   37 |   string check1=reverse(s.begin(),s.end());
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~
a.cc:38:24: error: conversion from 'void' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
   38 |   string check2=reverse(s1.begin(),s1.end());
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
a.cc:39:25: error: conversion from 'void' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
   39 |   string check3= reverse(s2.begin(),s2.end());
      |                  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
Language: C++

#include <iostream>
using namespace std;

int main(){
    char string1[100];
    int i, length;
    int flag = 0;
    
   	cin >> string1;
    
    length = strlen(string1);
    
    for(i=0;i < length ;i++){
        if(string1[i] != string1[length-i-1]){
            flag = 1;
            break;
   }
}
    
    if (flag) {
        cout << string1 << "No" << endl; 
    }    
    else {
        cout << string1 << "Yes" << endl; 
    }
    system("pause");
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:14: error: 'strlen' was not declared in this scope
   11 |     length = strlen(string1);
      |              ^~~~~~
a.cc:2:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | using namespace std;
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(void)
{
  string s;
  cin>>s;
  
 int n = s.length();
  bool qwq = true;
  if(n%2==0)
    qwq = false;
  int i =0;j=n-1;
  while(i<=j)
  {
    if(s[i]!=s[j])
    {
      qwq = false;
      break;
    }
    i++;
    j--;
  }
  
   i =0;j = (n-1)/2-1;
  
  while(i<=j)
  {
    if(s[i]!=s[j])
    {
      qwq = false;
      break;
    }
    i++;
    j--;
  }
  i =(n+1)/2; j =n-1;
   while(i<=j)
  {
    if(s[i]!=s[j])
    {
      qwq = false;
      break;
    }
    i++;
    j--;
  }
  if(qwq)
    cout<<"Yes"<<endl;
  else
    cout<<"No"<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:12: error: 'j' was not declared in this scope
   12 |   int i =0;j=n-1;
      |            ^
Language: C++

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

#define FastRead  ios_base::sync_with_stdio(0);cin.tie(0);
#define endl      "\n"
#define pi        acos(-1.0)

typedef long long ll;
typedef long long unsigned llu;

string s;
bool is_palindrome(ll lower,ll upper)
{
    while(upper>lower)
        if(s[lower++]!=s[upper--])
            return false;

    return true;
}


int main()
{
    FastRead

    ll len,l,u;
    bool flag,ribbon;

    cin>>s;

    len = s.size();

    if(is_palindrome(0,len-1))

    {
        l = 0;
        u = ((len-1)/2)-1;

        flag = is_palindrome(l,u);

        l = ((len+3)/2)-1;
        u = len-1;

        ribbon = is_palindrome(l,u);

        if(ribbon and flag)
            cout<<"Yes";
        else
            cout<<"No";
    }
    else
        cout<<"No";


Compiler output:
a.cc: In function 'int main()':
a.cc:52:20: error: expected '}' at end of input
   52 |         cout<<"No";
      |                    ^
a.cc:23:1: note: to match this '{'
   23 | {
      | ^
Language: C++

#include <algoarithm>
#include <iostream>
#include <cstdlib>
#include <string>

using namespace std;

bool is_palindrome(const string& s) {
  string r = s;
  reverse(r.begin(), r.end());
  return s == r;
}

int main() {
  string s;
  cin >> s;

  bool is_strong_palindrome = true;

  if (!is_palindrome(s)) {
    is_strong_palindrome = false;
  }

  int n = s.size();
  const string& head = s.substr(0, (n-1)/2);

  if (!is_palindrome(head)) {
    is_strong_palindrome = false;
  }

  const string& tail = s.substr((n+1)/2, n - (n+1)/2);

  if (!is_palindrome(tail)) {
    is_strong_palindrome = false;
  }

  cout << (is_strong_palindrome ? "Yes" : "No")  << endl;
  return 0;
}


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

s=input()
ls =len(s)
for i in range(ls//2):
    if s[i]!=s[ls-1-i]:
        print("No")
        exit(0)
s1=s[0:(ls-1)//2]
ls1=len(s1)
for i in range(ls1//2):
    if s1[i]!=s1[ls1-1-i]:
        print("No")
        exit(0)
s2=s[(ls+1)//2:]
ls2=len(s2)
for i in range(ls2//2):
    if s2[i]!=s2[ls2-1-i]:
        print("No")
        exit(0)
print("Yes")

Compiler output:
a.cc:1:1: error: 's' does not name a type
    1 | s=input()
      | ^
Language: Java


//package practice;

import java.util.*;

import java.io.*;
import java.math.*;

public class wow {
	
	
	public static void main(String args[]) throws Exception {
		Scanner scan = new Scanner(System.in);
		String s = scan.nextLine();
		String[] split = s.split("");
		List<String> cool = Arrays.asList(split);
		List<String> temp = cool.subList(0,  ((s.length() - 1) / 2));
		Collections.reverse(temp);
		temp = cool.subList(((s.length() + 3) / 2) - 1, s.length());
		Collections.reverse(temp);
		String check = "";
		for (String x : cool) {
			check += x;
		}
		if (check.equals(s)) {
			System.out.println("Yes");
		}
		else {
			System.out.println("No");
		}
	
	
		

		
	}
}




Compiler output:
Main.java:9: error: class wow is public, should be declared in a file named wow.java
public class wow {
       ^
1 error
Language: C

S = input()

def kaibunCheck(str):
    s = 0
    e = len(str)-1

    while(s < e):
        if(str[s]!=str[e]):
            return False
        s +=1
        e-=1
    return True


c = kaibunCheck(S) and kaibunCheck(S[0:(len(S)-1)//2])

if(c):
    print("Yes")
else:
    print("No")

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | S = input()
      | ^
main.c:1:1: error: type defaults to 'int' in declaration of 'S' [-Wimplicit-int]
main.c:1:5: error: implicit declaration of function 'input' [-Wimplicit-function-declaration]
    1 | S = input()
      |     ^~~~~
main.c:1:5: error: initializer element is not constant
main.c:3:1: error: expected ',' or ';' before 'def'
    3 | def kaibunCheck(str):
      | ^~~
Language: C++

#include <stdio.h>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <queue>
#include <stack>
#include <cmath>
#include <ctime>
#include <cstdio>
#include <vector>
#include <string>
#include <bitset>
#include <cctype>
#include <cstdlib>
#include <cstring>
#include <utility>
#include <numeric>
#include <complex>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <cassert>
#include <iostream>
#include <iterator>
#include <algorithm>
#include <functional>
using namespace std;
typedef long long ll;
const double EPS = 1e-9;
typedef vector<int> vint;
typedef vector<vector<int>> v2int;
typedef vector<ll> vll;
typedef vector<vector<ll>> v2ll;
typedef list<int> liint;
typedef pair<int, int> pint;
const int INF = int(2e9);
const ll LINF = ll(2e9) * ll(2e9);
#define rep(i, n) REP(i, 0, n)
#define ALL(v) v.begin(), v.end()
#define MSG(a) cout << #a << " " << a << endl;
#define REP(i, x, n) for(int i = x; i < n; i++)
template<class T, class C> void chmax(T& a, C b) { a > b ? : a = b; }
template<class T, class C> void chmin(T& a, C b) { a < b ? : a = b; }

bool is_kaibun(string& S) {
    int N = S.size();
    rep(i, N) {
        if (S[i] != S[N - 1 - i]) {
            return false;
        }
    }
    return true;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    string S;
    cin >> S;

    int N = S.size();
    if (is_kaibun(S) == false) {
        cout << "No" << endl;
        return 0;
    }
    if(is_kaibun(S.substr(0, (N - 1)/2)) == false) {
        cout << "No" << endl;
        return 0;
    }
    if (is_kaibun(S.substr((N + 3)/2 - 1)) == false) {
        cout << "No" << endl;
        return 0;
    }
    cout << "Yes" << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:68:26: error: cannot bind non-const lvalue reference of type 'std::string&' {aka 'std::__cxx11::basic_string<char>&'} to an rvalue of type 'std::__cxx11::basic_string<char>'
   68 |     if(is_kaibun(S.substr(0, (N - 1)/2)) == false) {
      |                  ~~~~~~~~^~~~~~~~~~~~~~
a.cc:47:24: note:   initializing argument 1 of 'bool is_kaibun(std::string&)'
   47 | bool is_kaibun(string& S) {
      |                ~~~~~~~~^
a.cc:72:27: error: cannot bind non-const lvalue reference of type 'std::string&' {aka 'std::__cxx11::basic_string<char>&'} to an rvalue of type 'std::__cxx11::basic_string<char>'
   72 |     if (is_kaibun(S.substr((N + 3)/2 - 1)) == false) {
      |                   ~~~~~~~~^~~~~~~~~~~~~~~
a.cc:47:24: note:   initializing argument 1 of 'bool is_kaibun(std::string&)'
   47 | bool is_kaibun(string& S) {
      |                ~~~~~~~~^
Language: C++

#include <bits/stdc++.h>
#define pb push_back

using namespace std;

    string s;

    bool check(string &s){
        int n = s.size() - 1;
        for(int i=0; i<s.size(); i++){
            if( s[i] != s[n] ){
                return false;
            }
            n--;
        }
        return true;
    }
    
int main(){

    cin >> s;

    int a = s.size() / 2;
    
    if( check(s) && check( s.substr(0, a) ) && check(s.substr(a+1, a)) ){
        cout << "Yes";
    }
    else{
        cout << "No";
    }

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:36: error: cannot bind non-const lvalue reference of type 'std::string&' {aka 'std::__cxx11::basic_string<char>&'} to an rvalue of type 'std::__cxx11::basic_string<char>'
   25 |     if( check(s) && check( s.substr(0, a) ) && check(s.substr(a+1, a)) ){
      |                            ~~~~~~~~^~~~~~
a.cc:8:24: note:   initializing argument 1 of 'bool check(std::string&)'
    8 |     bool check(string &s){
      |                ~~~~~~~~^
a.cc:25:62: error: cannot bind non-const lvalue reference of type 'std::string&' {aka 'std::__cxx11::basic_string<char>&'} to an rvalue of type 'std::__cxx11::basic_string<char>'
   25 |     if( check(s) && check( s.substr(0, a) ) && check(s.substr(a+1, a)) ){
      |                                                      ~~~~~~~~^~~~~~~~
a.cc:8:24: note:   initializing argument 1 of 'bool check(std::string&)'
    8 |     bool check(string &s){
      |                ~~~~~~~~^
Language: C++

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

int main()
{
  	string s;
  	cin >> s;
  	string s1 = s;
  	reverse(s.begin(),s.end());
  	if(s1 != s)
    {
    	cout << "No" << endl;
      	return 0;
    }
  	int n = s.size();
  	int t = (n-1)/2-1;
   	string it="";
  	for(int i=0;i<=t;i++)
    {
    	it += s[i]
    }  
   	string it1 = it;
  reverse(it.begin(),it.end());
  	if(it1 != it)
    {
      cout << "No" << endl;
    }
  else
  {
    cout<<"Yes"<<endl;
  }
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:19: error: expected ';' before '}' token
   22 |         it += s[i]
      |                   ^
      |                   ;
   23 |     }
      |     ~
Language: C++

#include<cstdio>
#include<cmath>
#include<cstring>
#include<algorithm>
using namespace std;
char fa[1008];
int main(){
  int n,m;
  scanf("%s",fa+1);
  n=strlen(fa+1);
  int l=1,r=n/2;
  int fk=1;
//  printf("%d\n",n);
  while(fk&&l<r){
  	if(fa[l]==fa[r]){
  		l++,r--;
	  }
	  else{
	  	fk=0;
	  }
  }
  if(!fk){
  	printf("No\n");
  	return 0;
  }
  l=（n+3）/2,r=n;
  while(fk&&l<r){
  	if(fa[l]==fa[r]){
  		l++,r--;
	  }
	  else{
	  	fk=0;
	  }
  }
  if(!fk){
  	printf("No\n");
  }
  else{
  	printf("Yes\n");
  }
}



Compiler output:
a.cc: In function 'int main()':
a.cc:26:5: error: '\U0000ff08n' was not declared in this scope
   26 |   l=（n+3）/2,r=n;
      |     ^~~
a.cc:26:9: error: unable to find numeric literal operator 'operator""\U0000ff09'
   26 |   l=（n+3）/2,r=n;
      |         ^~~
Language: C++

#include <iostream>
#include <cstdlib>
#include <string>

using namespace std;

bool is_palindrome(const string& s) {
  string r = s;
  reverse(r.begin(), r.end());
  return s == r;
}

int main() {
  string s;
  cin >> s;

  bool is_strong_palindrome = true;

  if (!is_palindrome(s)) {
    is_strong_palindrome = false;
  }

  int n = s.size();
  const string& head = s.substr(0, (n-1)/2);

  if (!is_palindrome(head)) {
    is_strong_palindrome = false;
  }

  const string& tail = s.substr((n+1)/2, n - (n+1)/2);

  if (!is_palindrome(tail)) {
    is_strong_palindrome = false;
  }

  cout << (is_strong_palindrome ? "Yes" : "No")  << endl;
  return 0;
}


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

//* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
//* vamsicool007    You are never wrong to do the right thing    vamsicool007 *
//* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
#include<bits/stdc++.h>
using namespace std;
#define flash ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define F first
#define S second
#define pb push_back
#define mp make_pair
#define mt make_tuple
#define endl "\n"
#define int long long
typedef long long ll;
typedef long double ld;
const int mod = 1000000007;
const int N=200005;
vector<int>vis(N);
vector<vector<int>>adj(N);
void dfs(int v){vis[v]=1;for(auto i:adj[v]){if(!vis[i]){dfs(i);}}return;}
bool isPrime(ll n){if(n<2)return false;for(ll i=2;i*i<=n;++i){if(n%i==0){return false;}}return true;}
ll factorial(ll n){return (n==1 || n==0) ? 1:n*factorial(n-1);}
ll power(ll x,ll y){ll res=1;x=x;while(y>0){if(y&1)res=(res*x)%mod;y=y>>1;x=(x*x)%mod;}return res%mod;}
ll gcd(ll a,ll b){if (a==0)return b;return gcd(b%a,a);}
ll lcm(ll a,ll b){return (a/gcd(a,b)*b);}
ll max(ll a,ll b){ll ans=a>b?a:b;return ans;}
ll min(ll a,ll b){ll ans=a<b?a:b;return ans;}
int root(int a[],int i){while(a[i]!=i){a[i]=a[a[i]];i=a[i];}return i;}
void unionn(int a[],int i,int j){int root_i=root(a,i);int root_j=root(a,j);a[root_i]=root_j;return;}
void fun()
{
    #ifndef ONLINE_JUDGE
    freopen("infile.txt", "r", stdin);
    freopen("oufile.txt", "w", stdout);
    #endif
}
int nCr(int n, int r) 
{ 
    return fact(n) / (fact(r) * fact(n - r)); 
} 
  
// Returns factorial of n 
int fact(int n) 
{ 
    int res = 1; 
    for (int i = 2; i <= n; i++) 
        res = res * i; 
    return res; 
}
signed main()
{
    flash;
    //fun();
    int t=1;
    //cin>>t;
    while(t--)
    {
        string s;
        cin>>s;
        int n=s.size();
        int f=0;
        for(int i=0;i<n/2;i++)
        {
        	if(s[i]!=s[n-i-1])
        		{f=1;break;}
        }
        if(!f)
        {
        	int m=(n-1)/2;
        	int f1=0;
        	for(int i=0;i<(n-1)/4;i++)
        	{
        		if(s[i]!=s[m-1-i])
        			{f1=1;break;}
        	}
        	int j=(n+3)/2;
        	int k=(2*n+3)/4;
        	int f2=0;
        	for(int i=j;i<k;i++)
        	{
        		if(s[i]!=s[k-i-1])
        			{f2=1;break;}
        	}
        	if(!f1&&!f2)
        		cout<<"Yes";
        	else
        		cout<<"No";
        }
        else
        	cout<<"No";
    }
    return 0;
}

Compiler output:
a.cc: In function 'long long int nCr(long long int, long long int)':
a.cc:39:12: error: 'fact' was not declared in this scope
   39 |     return fact(n) / (fact(r) * fact(n - r));
      |            ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;
#define rep(i,m,n) for(int i=(int)(m);i<(int)(n);++i)
#define rREP(i,m,n) for(int (i)=(n)-1; (i)>=(m);--(i))
#define all(x) (x).begin(),(x).end()
#define out(y,x,h,w) (y)<0||(x)<0||(y)>=(h)||(x)>=(w)
constexpr int INF = 1000000001;
constexpr ll mod = 1000000007;
constexpr double PI = 3.1415926535897932;

template<class T>inline bool chmin(T& a, T b) {
	if (a > b) {
		a = b;
		return true;
	}
	return false;
}
template<class T>inline bool chmax(T& a, T b) {
	if (a < b) {
		a = b;
		return true;
	}
	return false;
}
inline void init() {
	cin.tie(nullptr); cout.tie(nullptr);
	ios::sync_with_stdio(false);
	cout << fixed << setprecision(15);
}

int main() {
	init();

	string s; cin >> s;
	bool is = true;
	string t = s;
	reverse(all(t));
	if (s != t)is = false;
	t = t.substr(0, (s.size() - 1) / 2);
	reverse(all(a));
	if (a != t)is = false;
	string a = t;
	t = s;
	t = t.substr((s.size() + 3) / 2 - 1, s.size());
	a = t;
	reverse(all(a));
	if (a != t)is = false;
	cout << (is ? "Yes" : "No") << "\n";


	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:42:21: error: 'a' was not declared in this scope
   42 |         reverse(all(a));
      |                     ^
a.cc:7:17: note: in definition of macro 'all'
    7 | #define all(x) (x).begin(),(x).end()
      |                 ^
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>;
  
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);

  string s; cin >> s;

  for(int i = 0; i < s.size()/2; ++i) {
    if(s[i] != s[s.size() - 1 - i]) {
      cout << "No" << endl;
      return 0;
    }
  }
  int n = (s.size()/2+1) / 2 + 1;
  for(int i = 0; i < n; ++i) {
    if(s[i] != s[n-i-1]) {
      cout << "No" << endl;
      return 0;
    }
  }

  for(int i = (n + 3)/2-1; i < n; ++i) {
    if(s[i] != s[n-i-1]) {
      cout << "No" << endl;
      return 0;
    }
  }j
  cout << "Yes" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:35:4: error: 'j' was not declared in this scope
   35 |   }j
      |    ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(void)
{
  string s;
  cin>>s;
  
  n = s.length();
  bool qwq = true;
  if(n%2==0)
    qwq = false;
  int i =0;int j = (n-1)/2-1;
  
  while(i<=j)
  {
    if(s[i]!=s[j])
    {
      qwq = false;
      break;
    }
    i++;
    j--;
  }
  i =(n+1)/2; j =n-1;
   while(i<=j)
  {
    if(s[i]!=s[j])
    {
      qwq = false;
      break;
    }
    i++;
    j--;
  }
  if(qwq)
    cout<<"Yes"<<endl;
  else
    cout<<"No"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'n' was not declared in this scope
    8 |   n = s.length();
      |   ^
Language: C++

#include <bits/stdc++.h>
#define pb push_back

using namespace std;

    string s;

int main(){

    cin >> s;

    int a = s.size() / 2;
    
    if( check(s) && check( s.substr(0, a) ) && check(s.substr(a+1, a)) ){
        cout << "Yes";
    }
    else{
        cout << "No";
    }

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:9: error: 'check' was not declared in this scope
   14 |     if( check(s) && check( s.substr(0, a) ) && check(s.substr(a+1, a)) ){
      |         ^~~~~
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main(){
  string S;

  cin >> S;
  int h = 0;

  for(int i = 0; i < S.size(); i++){
    for(int j = S.size() - 1; j >= 0; j++){
      if(S[i] != S[j]){ cout << "No"; return 0; }
    }
  }
  for(int i = 0; i < S.size() / 2; i++){
    for(int j = S.size() / 2 - 1; j >= 0; j++){
      if(S[i] != S[j]){ cout << "No"; return 0; }
    }
  }

    for(int j =  S.size() / 2 + 1; j < S.size(); j++){
      for(int j = S.size() - 1; j > S.size() / 2; j++){
      if(S[i] != S[j]){ cout << "No"; return 0; }
    }
    }

    cout << "Yes";

    return 0;
  


  
}



Compiler output:
a.cc: In function 'int main()':
a.cc:24:12: error: 'i' was not declared in this scope
   24 |       if(S[i] != S[j]){ cout << "No"; return 0; }
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int pal(string s)
{
  int n=s.length();
  for(int i=0;i<n/2;i++)
     if(s.at(i)!=s.at(n-1-i)
        return 0;
      return 1;  
}  
int main()
{
  string s;
  cin>>s;
  int n=s.length();
  if(n%2==1 && pal(s)==1 && pal(s.substr(0,n/2))==1)
     cout<<"Yes"<<endl;
  else cout<<"No"<<endl;   
  return 0;
}  


Compiler output:
a.cc: In function 'int pal(std::string)':
a.cc:7:29: error: expected ';' before 'return'
    7 |      if(s.at(i)!=s.at(n-1-i)
      |                             ^
      |                             ;
    8 |         return 0;
      |         ~~~~~~               
a.cc:9:7: error: expected primary-expression before 'return'
    9 |       return 1;
      |       ^~~~~~
a.cc:8:18: error: expected ')' before 'return'
    8 |         return 0;
      |                  ^
      |                  )
    9 |       return 1;
      |       ~~~~~~      
a.cc:7:8: note: to match this '('
    7 |      if(s.at(i)!=s.at(n-1-i)
      |        ^
a.cc:10:1: warning: no return statement in function returning non-void [-Wreturn-type]
   10 | }
      | ^
Language: C++

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

bool check(string s){
    string s_=s;
    reverse(s_.begin(),s_.end());
    if(s_==s){
        return true;
    }else{
        return false;
    }
}

int main(){
    string S;
    cin>>S;
    int N=S.length();
    bool flag=false;
    if(check(S)){
        if(check(S.substr(0,((N-1)/2)))){
            if(check(S.substr((N+3)/2-1))){
                flag=true;
            }
        }

    }
    if(flag)cout<<"Yes"<<endl;
    else cout<<"No"<<endl;


}

Compiler output:
a.cc: In function 'bool check(std::string)':
a.cc:7:5: error: 'reverse' was not declared in this scope
    7 |     reverse(s_.begin(),s_.end());
      |     ^~~~~~~
Language: C++

#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define inf 1000000007
#define fr first
#define sc second
#define eps 1e-9
#define clr(a) memset(a, 0, sizeof(a))
#define sz(x) x.size()
#define sni(x) scanf("%d",&x)
#define snl(x) scanf("%lld", &x)
#define snc(x) scanf("%c", &c);
#define rep(n) for(int i = 0 ; i < n ;i ++)
#define repc(i, n) for(int i = 0 ; i < n ; i ++)
#define FOR(i, x, y) for(int i = x ; i < y ; i ++)
#define DEC(i, x, y) for(int i = x ; i >= y ; i --)
#define all(v) v.begin(), v.end()
#define min3(a, b, c) min(a, min(b,c))
#define max3(a, b, c) max(a, max(b, c))
#define alla(a, n) a, a+n
using namespace std;
#define ll long long
 vector<pair<ll,ll>>v;
 ll n,k,p;
 ll go(ll i,ll p)
 {
     if(p==0)
     {
         return 0;
     }
     if(p<0)
     {
         return INT_MIN;
     }
     ll res=INT_MIN;
     res=max(go(i+1,p-v[i].second)+v[i].first,go(i+1,p));
     return res;
 }
 bool check(string s)
 {
     string s1=s;
     reverse(s1.begin(),s1.end());
     if(s1==s)
     return true;
     else
     return false;
 }
int main() {
    string s;
    cin>>s;
    ll n=s.length();
   // string s1="";string s2="";
    FOR(i,0,((n-1)/2))
    s1+=s[i];
     FOR(i,((n+3)/2)-1,n)
    s2+=s[i];
    cout<<s<<" "<<s1<<" "<<s2;
    if(check(s) and check(s1) and check(s2) )
    cout<<"Yes";
    else
    cout<<"No";
    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:54:5: error: 's1' was not declared in this scope; did you mean 's'?
   54 |     s1+=s[i];
      |     ^~
      |     s
a.cc:56:5: error: 's2' was not declared in this scope; did you mean 's'?
   56 |     s2+=s[i];
      |     ^~
      |     s
a.cc:57:19: error: 's1' was not declared in this scope; did you mean 's'?
   57 |     cout<<s<<" "<<s1<<" "<<s2;
      |                   ^~
      |                   s
a.cc:57:28: error: 's2' was not declared in this scope; did you mean 's'?
   57 |     cout<<s<<" "<<s1<<" "<<s2;
      |                            ^~
      |                            s
Language: C++

// best coder in the world do not mess with me!!
#include <bits/stdc++.h>
#define REP(ii,nn) for(int ii=0; ii<nn ;ii++)
#define FOR(ii, aa, bb) for (int ii = (aa); ii < (bb); ii++)
#define FORD(ii, aa, bb) for(int ii = (aa); ii > (bb); ii--)
#define pb(aa) push_back(aa)
#define fastaff ios_base::sync_with_stdio(false);cin.tie(NULL);
#define mp(aa,bb) make_pair(aa,bb)
#define v(a,b) vector<int> a(b)
typedef long long int ll;
using namespace std;
bool solve()
{
	string str1;cin>>str1;int x = str1.size();int l = (x-1)/2;string str2 = str1;reverse(str2.begin(),str2.end());
	if(str2!=str1)return false;
	string s1 = str1.substr(0,l);string str3 = str2.substr(0,l);string str4 = s1;reverse(str4.begin(),str4.end());
	if(str4!=s1)return false;
	str4 = str3;reverse(str4.begin(),str4.end());
	if(s4!=str3)
	return false;
	return true;
}
int main()
{
	int t = 1;
	while(t--)
	{
		if(solve())
			cout<<"Yes\n";
		else
			cout<<"No\n";
	}
}

Compiler output:
a.cc: In function 'bool solve()':
a.cc:19:12: error: 's4' was not declared in this scope; did you mean 's1'?
   19 |         if(s4!=str3)
      |            ^~
      |            s1
Language: C++

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

int check(string *t){

  int n=t.length();
  rep(i,(n-1)/2){
    
    if(t[i]!=t[(n-1)/2-(i+1)]){
      return 0;
    }
  }
  return 1;
}

int main(){

 string s;
  
  cin>>s;
  
  int N=s.length();
  
  if(check(s)==0){cout<<"No"<<endl;return 0;}
  string s1=s.substr(0,(N-1)/2);
  if(check(s1)==0){cout<<"No"<<endl;return 0;}
  string s2=s.substr((N+3)/2,(N-1)/2);
  if(check(s2)==0){cout<<"No"<<endl;return 0;}
  
  cout<<"Yes"<<endl;
}

Compiler output:
a.cc: In function 'int check(std::string*)':
a.cc:9:11: error: request for member 'length' in 't', which is of pointer type 'std::string*' {aka 'std::__cxx11::basic_string<char>*'} (maybe you meant to use '->' ?)
    9 |   int n=t.length();
      |           ^~~~~~
a.cc: In function 'int main()':
a.cc:27:12: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::string*' {aka 'std::__cxx11::basic_string<char>*'}
   27 |   if(check(s)==0){cout<<"No"<<endl;return 0;}
      |            ^
      |            |
      |            std::string {aka std::__cxx11::basic_string<char>}
a.cc:7:19: note:   initializing argument 1 of 'int check(std::string*)'
    7 | int check(string *t){
      |           ~~~~~~~~^
a.cc:29:12: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::string*' {aka 'std::__cxx11::basic_string<char>*'}
   29 |   if(check(s1)==0){cout<<"No"<<endl;return 0;}
      |            ^~
      |            |
      |            std::string {aka std::__cxx11::basic_string<char>}
a.cc:7:19: note:   initializing argument 1 of 'int check(std::string*)'
    7 | int check(string *t){
      |           ~~~~~~~~^
a.cc:31:12: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::string*' {aka 'std::__cxx11::basic_string<char>*'}
   31 |   if(check(s2)==0){cout<<"No"<<endl;return 0;}
      |            ^~
      |            |
      |            std::string {aka std::__cxx11::basic_string<char>}
a.cc:7:19: note:   initializing argument 1 of 'int check(std::string*)'
    7 | int check(string *t){
      |           ~~~~~~~~^
Language: C++

import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        boolean ans = check(s);
        System.out.println(ans ? "Yes" : "No");
        sc.close();

    }

    private static boolean check(String s) {
        if(s.length() == 1) return true;
        boolean ret = true;
        ret = isKaibun(s);
        if(ret){
            ret = check(s.substring(0, s.length()/2));
        }
        if(ret){
            ret = check(s.substring(s.length()/2 + s.length()%2, s.length()));
        }
        return ret;
    }

    private static boolean isKaibun(String s) {
        for (int i = 0; i < s.length()/2; i++) {
            if(s.charAt(i) != s.charAt(s.length()-1-i)){
                return false;
            }
        }
        return true;
    }

}


Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.*;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: expected unqualified-id before 'public'
    3 | public class Main {
      | ^~~~~~
Language: Java

import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc =new Scanner(System.in);
    String N=sc.next();
    String n[] =N.split("",0);
    int m=N.length();
    int M=m/2
    for(int i=0;i<M;i++){
      if(!(n[i].equals(n[m-1-i]))){System.out.println("No");System.exit(0);}
      if(!(n[i].equals(n[M+1+i]))){System.out.println("No");System.exit(0);}}
    int X=M/2;
    for(int j=0;j<X;j++){
      if(!(n[j].equals(n[M-1-j]))){System.out.println("No");System.exit(0);}}
    System.out.println("Yes");
  }
}

Compiler output:
Main.java:8: error: ';' expected
    int M=m/2
             ^
1 error
Language: C++

/*
±¾±¦±¦µÄ³ÌÐò±ðÏë¿´£¡£¡

name: [ÏÄ±¦±¦]
run time:[] ms
compilation time: [] s
output memory: [] MiB
where: []
state: []
*/
#include<bits/stdc++.h>
using namespace std;

int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	string s;
	
	cin>>s;
	
	if(is(s) && is(s.substr(0, s.size()/2)) && is(s.supstr(s.size/2, s.size())))
	{
		cout<<"Yes"<<endl;
	}
	else
	{
		cout<<"No"<<endl;
	}
}

bool is(string s)
{
	for(int i=0; i<=s.size()-1; i++)
	{
		if(s[i]!=s[s.size()-i-1])
		{
			return false;
		}
	}
	
	return true;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:12: error: 'is' was not declared in this scope; did you mean 's'?
   23 |         if(is(s) && is(s.substr(0, s.size()/2)) && is(s.supstr(s.size/2, s.size())))
      |            ^~
      |            s
a.cc:23:57: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'supstr'; did you mean 'substr'?
   23 |         if(is(s) && is(s.substr(0, s.size()/2)) && is(s.supstr(s.size/2, s.size())))
      |                                                         ^~~~~~
      |                                                         substr
a.cc:23:66: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   23 |         if(is(s) && is(s.substr(0, s.size()/2)) && is(s.supstr(s.size/2, s.size())))
      |                                                                ~~^~~~
      |                                                                      ()
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int maxn = 1e5+5;
const int mod = 1e9+7;
ll qpow(ll a,ll b){ll res=1;for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
bool judge(string a)
{
    string b = a;
    reverse(b.begin(),b.end());
    return b==a;
}
int main()
{
    string a;
    while(cin>>a){
    int n = a.size();
    if(judge(a)&&judge(a.substr(0,(n-1)/2))&&judge(a.substr((n+3)/2-1,n-(n+3)/2+1)))cout<<"Yes"<<endl;
    else cout<<"No"<<endl;
    }
    return 0;
}
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int maxn = 1e5+5;
const int mod = 1e9+7;
ll qpow(ll a,ll b){ll res=1;for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
bool judge(string a)
{
    string b = a;
    reverse(b.begin(),b.end());
    return b==a;
}
int main()
{
    string a;
    while(cin>>a){
    int n = a.size();
    if(judge(a)&&judge(a.substr(0,(n-1)/2))&&judge(a.substr((n+3)/2-1,n-(n+3)/2+1)))cout<<"Yes"<<endl;
    else cout<<"No"<<endl;
    }
    return 0;
}


Compiler output:
a.cc:26:11: error: redefinition of 'const int maxn'
   26 | const int maxn = 1e5+5;
      |           ^~~~
a.cc:4:11: note: 'const int maxn' previously defined here
    4 | const int maxn = 1e5+5;
      |           ^~~~
a.cc:27:11: error: redefinition of 'const int mod'
   27 | const int mod = 1e9+7;
      |           ^~~
a.cc:5:11: note: 'const int mod' previously defined here
    5 | const int mod = 1e9+7;
      |           ^~~
a.cc:28:4: error: redefinition of 'll qpow(ll, ll)'
   28 | ll qpow(ll a,ll b){ll res=1;for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
      |    ^~~~
a.cc:6:4: note: 'll qpow(ll, ll)' previously defined here
    6 | ll qpow(ll a,ll b){ll res=1;for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
      |    ^~~~
a.cc:29:6: error: redefinition of 'bool judge(std::string)'
   29 | bool judge(string a)
      |      ^~~~~
a.cc:7:6: note: 'bool judge(std::string)' previously defined here
    7 | bool judge(string a)
      |      ^~~~~
a.cc:35:5: error: redefinition of 'int main()'
   35 | int main()
      |     ^~~~
a.cc:13:5: note: 'int main()' previously defined here
   13 | int main()
      |     ^~~~
Language: C++

#n, m = list(map(int,input().split()))

s = input()
f = True

if s[::-1] != s:
    f = False

t = s[:(len(s)-1)//2]
if t != t[::-1]:
    f = False

t = s[(len(s)+3) // 2 - 1:]
if t != t[::-1]:
    f = False

if f:
    print('Yes')
else:
    print('No')
    


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #n
    1 | #n, m = list(map(int,input().split()))
      |  ^
a.cc:18:11: warning: multi-character character constant [-Wmultichar]
   18 |     print('Yes')
      |           ^~~~~
a.cc:20:11: warning: multi-character character constant [-Wmultichar]
   20 |     print('No')
      |           ^~~~
a.cc:3:1: error: 's' does not name a type
    3 | s = input()
      | ^
Language: C++

#include <bits/stdc++.h>
//#include <boost/multiprecision/cpp_int.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("O3")
#define REP(i,n) for(int i=0;i<n;i++)
#define REPP(i,n) for(int i=1;i<=n;i++)
#define ALL(obj) (obj).begin(), (obj).end()
#define EPS (1e-9)
#define INF (1e17)
#define PI (acos(-1))
//const double PI = acos(-1);
//const double EPS = 1e-15;
//long long INF=(long long)1E17;
#define i_7 (long long)(1e9+7)
//#define i_7 998'244'353
long mod(long a){
    long long c=a%i_7;
    if(c>=0)return c;
    return c+i_7;
}
long long po(long a, long b){
    if(b==0){
        return 1;
    }
    
    long long z = po(a,b/2);
    z = mod(z*z);
    if(b%2!=0){
        z = mod(a*z);
    }
    return z;
}
 
bool prime_(int n){
  if(n==1){
    return false;
  }else if(n==2){
    return true;
  }else{
    for(int i=2;i<=std::sqrt(n);i++){
      if(n%i==0){
        return false;
      }
    }
    return true;
  }
}
 
long long gcd_(long long a, long long b){
  if(a<b){
    std::swap(a,b);
  }
  if(a%b==0){
    return b;
  }else{
    return gcd_(b,a%b);
  }
}
 
long long lcm_(long long x, long long y){
  return (x/gcd_(x,y))*y;
}
 
//using namespace std;
//using namespace boost::multiprecision;
//using namespace __gnu_pbds;

bool palim(string s){
  int n = s.size();
  bool res = true;
  REP(i, (n - 1) / 2 + 1){
    if(s[i] == s[n - 1 - i])continue;
    res = false;
  }
  return res;
}

int main(){
  using namespace std;
  string s;
  cin>>s;
  int n = s.size();
  int m = (n - 1) / 2;
  bool ans = palim(s);
  if(!ans){
    cout<<"No"<<endl;
    return 0;
  }
  string t = s.substr(0, (n - 3) / 2);
  string r = s.substr((n + 1) / 2, (n - 3) / 2);
  ans = palim(t);
  if(!ans){
    cout<<"No"<<endl;
    return 0;
  }
  ans = palim(r);
  if(!ans){
    cout<<"No"<<endl;
    return 0;
  }
  cout<<"Yes"<<endl;
  return 0;
}


Compiler output:
a.cc:69:12: error: 'string' was not declared in this scope
   69 | bool palim(string s){
      |            ^~~~~~
a.cc:69:12: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 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/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc: In function 'int main()':
a.cc:85:19: error: 'palim' cannot be used as a function
   85 |   bool ans = palim(s);
      |              ~~~~~^~~
a.cc:92:14: error: 'palim' cannot be used as a function
   92 |   ans = palim(t);
      |         ~~~~~^~~
a.cc:97:14: error: 'palim' cannot be used as a function
   97 |   ans = palim(r);
      |         ~~~~~^~~
Language: Java

import java.util.*;

public class C {
    static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) {
        String s = sc.next();
        int n = s.length();
        if(!isPalindrome(s)) {
            System.out.println("No");
        } else if(!isPalindrome(s.substring(0, (n - 1) / 2))) {
            System.out.println("No");
        } else if(!isPalindrome(s.substring((n + 3) / 2 - 1, n))) {
            System.out.println("No");
        } else {
            System.out.println("Yes");
        }
    }

    static boolean isPalindrome(String s) {
        for(int i = 0, f = s.length(); i < f; ++i) {
            if(s.charAt(i) != s.charAt(f - 1 - i)) {
                return false;
            }
        }

        return true;
    }
}

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

#include<bits/stdc++.h>
using namespace std;
int main(){
  string s;
  cin>>s;
  bool f=true;
  int n=(s.size()-1)/2;
  for(int i=0;i<s.size();i++){
    if(s[i]!=s[s.size-i-1])
      f=false;
  }
  for(int i=0;i<n;i++){
    if(s[i]!=s[s.size-i-1])
      f=false;
  }
  if(f==false)
    cout<<"No"<<endl;
  else
    cout<<"Yes"<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:18: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
    9 |     if(s[i]!=s[s.size-i-1])
      |                ~~^~~~
      |                      ()
a.cc:13:18: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   13 |     if(s[i]!=s[s.size-i-1])
      |                ~~^~~~
      |                      ()
Language: C++

#include<stdio.h>
#include<string.h>
char x[101];
int main(){
	gets(x);
	int len=strlen(x)-1;
	int count=0;
	for(int i=0;i<=len;i++){
		if(x[i]!=x[len-i])count=1;
	}
	int len1=len/2-1;
	for(int i=0;i<=len1;i++){
		if(x[i]!=x[len1-i])count=1;
	}
	for(int i=len1+2;i<=len;i++){
		if(x[i]!=x[len-(i-len1-2)])count=1;
	}
	if(count==1)printf("No");
	else printf("Yes");
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    5 |         gets(x);
      |         ^~~~
      |         getw
Language: C++

package main

import "fmt"

func isOK(s string) bool {
	ok := true
	for i := 0; i < len(s)/2; i++ {
		if s[i] != s[len(s)-1-i] {
			ok = false
			break
		}
	}
	return ok
}

func main() {
	var s string
	fmt.Scan(&s)
	N := len(s)
	if isOK(s) && isOK(s[:(N-1)/2]) && isOK(s[N/2+1:]) {
		fmt.Println("Yes")
	} else {
		fmt.Println("No")
	}
}


Compiler output:
a.cc:1:1: error: 'package' does not name a type
    1 | package main
      | ^~~~~~~
a.cc:16:1: error: 'func' does not name a type
   16 | func main() {
      | ^~~~
Language: C++

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

int main(){
	int f=0;
	string s;
	cin >> s;
	n=s.size();
	for(int i=0;i<(n-1)/2;i++){
		if(s.at(i)!=s.at(n-1-i)){
			f=1;
		}
	}
	for(int i=0;i<(n-3)/4;i++){
		if(s.at(i)!=s.at((n-3)/2 -1)){
			f=1;
		}
	}
	if(f=1){
		cout << "No";
	}else{
		cout << "Yes";
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'n' was not declared in this scope
    8 |         n=s.size();
      |         ^
Language: C++

#include<bits/stdc++.h>
#include<string.h>
using namespace std;
#define MOD 1000000007
#define MAX 105
#define MAX_NUM 300001
char s[MAX];
int main()
{
    gets(s);
    int n,m,i;
    n=strlen(s);
    for(i=1;i<(n-1)/2;i++)
    {
        if(s[i-1]!=s[(n-1)/2-i])
        {
            printf("No");
            return 0;
        }
    }
    for(i=1;i<(n-1)/2;i++)
    {
        if(s[i+(n+1)/2-1]!=s[(n+1)/2+(n-1)/2-i])
        {
            printf("No");
            return 0;
        }
    }
    printf("Yes");
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: 'gets' was not declared in this scope; did you mean 'getw'?
   10 |     gets(s);
      |     ^~~~
      |     getw
Language: Java

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class TaskB {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st;
        PrintWriter pw = new PrintWriter(System.out);
        
        char[] c = br.readLine().toCharArray();
        int n = c.length;

        boolean ans = true;

        ans &= isPal(c);

        char[] temp = new char[n/2];
        for(int i=0 ; i<n/2 ; i++) {
            temp[i] = c[i];
        }

        ans &= isPal(temp);

        for(int i=n/2+1 ; i<n ; i++) {
            temp[i-(n/2+1)] = c[i];
        }

        ans &= isPal(temp);

        if(ans) {
            pw.println("Yes");
        }
        else {
            pw.println("No");
        }

        
        
        
        
        
        pw.flush();
        pw.close();
    }

    static boolean isPal(char[] c) {
        int n = c.length;
        for(int i=0 ; i<n/2 ; i++) {
            if(c[i] != c[n-1-i]) {
                return false;
            }
        }
        return true;
    }
}


Compiler output:
Main.java:6: error: class TaskB is public, should be declared in a file named TaskB.java
public class TaskB {
       ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define vi vector<int>
#define pb push_back
#define pii pair<int,int>
#define fi first
#define se second
#define re cin>>
#define pr cout<<
#define in(x) scanf("%d",&x)
#define inn(x,y) scanf("%d%d",&x,&y)
#define innn(x,y,z) scanf("%d%d%d",&x,&y,&z)
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)

const int N=2e6+5;
const int mod=1e9+7;

string s;
bool check(int i, int j){
    while(i<=j){
        if(s[i]!=s[j]) return 0;
        i++,j--;
    }
    return 1;
}
int main(){
    cin>>s;
    if(check(0,s.size()-1) && check(0,(s.size()/2-1)) cout<<"Yes\n";
    else cout<<"No\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:54: error: expected ';' before 'cout'
   30 |     if(check(0,s.size()-1) && check(0,(s.size()/2-1)) cout<<"Yes\n";
      |                                                      ^~~~~
      |                                                      ;
a.cc:31:5: error: expected primary-expression before 'else'
   31 |     else cout<<"No\n";
      |     ^~~~
a.cc:30:69: error: expected ')' before 'else'
   30 |     if(check(0,s.size()-1) && check(0,(s.size()/2-1)) cout<<"Yes\n";
      |       ~                                                             ^
      |                                                                     )
   31 |     else cout<<"No\n";
      |     ~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
template<class T> bool umin(T &a, T b) { return a > b ? (a = b, true) : false; }
template<class T> bool umax(T &a, T b) { return a < b ? (a = b, true) : false; }
#define ALL(x) (x).begin(), (x).end()
LL POW(LL a,LL p,LL M){ if(!p) return 1LL;LL T = POW(a,p/2,M);T = T*T%M; if(p&1) T=T*(a%M)%M; return T; }
LL SQRT(LL a) { LL b = (LL)sqrtl(((double)a)+0.5); while(b*b<a) ++b; while(b*b>a) --b; return (b*b==a)?b:-1; }
//endl
//<------------------------edits---------------------------------------------->
const LL MOD = 1e9+7;//998244353
// #define LOCAL LDD
// #define int LL

bool palin(string s){
  int n = s.length();
  for(int i=0;i<n/2;i++) if(s[i]!=s[n-i-1]) return 0;
  return 1;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.precision(10);cout << fixed;
#ifdef LOCAL
  freopen("input.txt", "rt", stdin);
#endif
  string s;cin >> s;
  int n = s.length();
  if(palin(s) && palin(s.substr(0,(n-1)/2)) && palin(s.substr((n+1)/2,(n-1)/2))){
    cout << "Yes\n";
  }else cout << "No\n";s
  cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s\n";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:25: error: expected ';' before 'cerr'
   32 |   }else cout << "No\n";s
      |                         ^
      |                         ;
   33 |   cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s\n";
      |   ~~~~
Language: Java

import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String s=sc.next();
        int n=s.length();
        boolean res=check(s,0,n-1)&&check(s,0,(n-1)/2-1)&&check(s,(n+3)/2-1,n-1);
        if(res)System.out.println("Yes");
        else System.out.println("No");
    }
    public static boolean check(String s,int start, int end)
    {
        int i=start,j=end;
        while(i<j)
        {
            if(s.charAt(i)!=s.charAt(j))return false;
            i++;
            j--;
        }
        return true;
    }

Compiler output:
Main.java:22: error: reached end of file while parsing
    }
     ^
1 error
Language: C

// B.

#include <iostream>
#include <sstream>
#include <algorithm>
#include <vector>

using namespace std;

typedef long long LL;

bool is_p(string s) {
	string r = s;
	reverse(r.begin(), r.end());
	return s == r;
}

int main(int argc, char *argv[]) {
	string s;
	cin >> s;
	bool ans = is_p(s);
	int len = s.length();
	if (ans) {
		if (!is_p(s.substr(0, (len - 1) / 2))) {
			ans = false;
		}
		if (!is_p(s.substr(len / 2 + 1))) {
			ans = false;
		}
	}
	cout << ans << endl;
	return 0;
}


Compiler output:
main.c:3:10: fatal error: iostream: No such file or directory
    3 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.