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

public class Main {
	public static void main(String[] args) {
    	Scanner file = new Scanner(System.in);
      	String s = file.next(), t = file.next();
      	System.out.println(s.equals(t.substring(0, t.length() - 1)) ? "Yes" : "No");
      	file.close();
    }
}

Compiler output:
Main.java:3: error: cannot find symbol
    	Scanner file = new Scanner(System.in);
    	^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
    	Scanner file = new Scanner(System.in);
    	                   ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

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

int main(){
  string S,T;
  cin >> S >> T;
  T.pop_back();
  if (T = S ) {
    cout << "Yes" << endl;
  }
  else cout << "No" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: could not convert 'T.std::__cxx11::basic_string<char>::operator=(S)' from 'std::__cxx11::basic_string<char>' to 'bool'
    8 |   if (T = S ) {
      |       ~~^~~
      |         |
      |         std::__cxx11::basic_string<char>
Language: C++

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

int main(){
  string S,T;
  cin >> S >> T;
  pop_back(T);
  if (T = S ) {
    cout << "Yes" << endl;
  }
  else cout << "No" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'pop_back' was not declared in this scope
    7 |   pop_back(T);
      |   ^~~~~~~~
a.cc:8:9: error: could not convert 'T.std::__cxx11::basic_string<char>::operator=(S)' from 'std::__cxx11::basic_string<char>' to 'bool'
    8 |   if (T = S ) {
      |       ~~^~~
      |         |
      |         std::__cxx11::basic_string<char>
Language: C

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

int main(){
  
  string S;
  string T;
  cin >> S >> T ;
  for(int i = 0; i < S.size(); i++){
    if (S.at(i) != T.at(i) ){
      cout << "No" << endl;
        break;
    }
    if ( i = S.size()-1 ) {
      cout << "Yes" << endl;
    }
  }
}


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

#include<stdio.h>
#include<string.h>
int main()
{
    char s[10],t[20];
    scanf("%s",s);
    scanf("%s",t);
    for(int i=0;i<strlen(s);i++)
    {
        if(s[i]!=t[i])
        {
            printf("No");
        }
    }
    if(i==strlen(s))
    {
        printf("Yes");
    }
    return 0'
}


Compiler output:
main.c: In function 'main':
main.c:15:8: error: 'i' undeclared (first use in this function)
   15 |     if(i==strlen(s))
      |        ^
main.c:15:8: note: each undeclared identifier is reported only once for each function it appears in
main.c:19:13: warning: missing terminating ' character
   19 |     return 0'
      |             ^
main.c:19:13: error: missing terminating ' character
main.c:19:13: error: expected ';' before '}' token
   19 |     return 0'
      |             ^
      |             ;
   20 | }
      | ~
Language: C++

int main(){
  string s,t;
  cin >> s >> t;
  for(int i=0;i<s.size();i++){
    if(s[i]!=t[i]){
      cout << "No" << endl;
      return 0;
    }
  }
  cout << "Yes" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:2:3: error: 'string' was not declared in this scope
    2 |   string s,t;
      |   ^~~~~~
a.cc:3:3: error: 'cin' was not declared in this scope
    3 |   cin >> s >> t;
      |   ^~~
a.cc:3:10: error: 's' was not declared in this scope
    3 |   cin >> s >> t;
      |          ^
a.cc:3:15: error: 't' was not declared in this scope
    3 |   cin >> s >> t;
      |               ^
a.cc:6:7: error: 'cout' was not declared in this scope
    6 |       cout << "No" << endl;
      |       ^~~~
a.cc:6:23: error: 'endl' was not declared in this scope
    6 |       cout << "No" << endl;
      |                       ^~~~
a.cc:10:3: error: 'cout' was not declared in this scope
   10 |   cout << "Yes" << endl;
      |   ^~~~
a.cc:10:20: error: 'endl' was not declared in this scope
   10 |   cout << "Yes" << endl;
      |                    ^~~~
Language: Java

ort java.util.*;
public class Solution{
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String c = sc.next();
    int l = c.length;
    String g = c.substring(0,l-1);
    if(s.equals(g)
      System.out.println("Yes");
      else
            System.out.println("No");
       }
       }

Compiler output:
Main.java:1: error: class, interface, enum, or record expected
ort java.util.*;
^
Main.java:9: error: ')' expected
    if(s.equals(g)
                  ^
2 errors
Language: Java

import java.util.*;
public class Solution{
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String c = sc.next();
    int l = c.length();
    String g = c.substring(0,l-1);
    if(s.equals(g)
      System.out.println("Yes");
      else
            System.out.println("No");
       }
       }

Compiler output:
Main.java:9: error: ')' expected
    if(s.equals(g)
                  ^
1 error
Language: C

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

int main() {
  string s, t;

  cin >> s >> t;

  for (int i = 0; i < s.size(); i++) {
    if (s.at(i) != t.at(i)) {
      cout << "No";
      return 0;
    }
  }

  cout << "Yes";

  return 0;
}

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

#include<bits/stdc++.h>
using namespace std;
int main()
{
#ifndef ONLINE_JUDGE
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
#endif

	ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int t=1;
    //cin>>t;
    while(t--)
    {
    	string s,t;
    	cin>>s>>t;

    	for(int i=0;i<s.size();i++)
    	{
    		if(s[i]!=t[i])
    			break;
    	}

    	if(i==s.size())
    		cout<<"Yes\n";
    	else
    		cout<<"No\n";



    	
    }


	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:12: error: 'i' was not declared in this scope
   26 |         if(i==s.size())
      |            ^
Language: Java

public class Main {

    private static boolean canBeAppended(String s1, String s2) {
        if (s1 == null || s2 == null) {
            return false;
        }

        int m = s1.length(), n = s2.length(), i = 0;
        while (i < m && i < n) {
            if (s1.charAt(i) != s2.charAt(i)) {
                return false;
            }
            i++;
        }

        return n != i && n - i <= 2;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s1 = sc.next();
        String s2 = sc.next();

        System.out.println(canBeAppended(s1, s2) ? "Yes" : "No");
        sc.close();
    }
}

Compiler output:
Main.java:20: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:20: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: Java

import java.util.Scanner;

public class Solution {

    private static boolean canBeAppended(String s1, String s2) {
        if (s1 == null || s2 == null) {
            return false;
        }

        int m = s1.length(), n = s2.length(), i = 0;
        while (i < m && i < n) {
            if (s1.charAt(i) != s2.charAt(i)) {
                return false;
            }
        }

        return n != i && n - i <= 2;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s1 = sc.next();
        String s2 = sc.next();

        System.out.println(canBeAppended(s1, s2) ? "Yes" : "No");
        sc.close();
    }
}

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

private static boolean canBeAppended(String s1, String s2) {
        if (s1 == null || s2 == null) {
            return false;
        }
        
        int m = s1.length(), n = s2.length(), i = 0;
        while (i < m && i < n) {
            if (s1.charAt(i) != s2.charAt(i)) {
                return false;
            }
        }

        return n != i && n - i <= 2;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s1 = sc.next();
        String s2 = sc.next();

        System.out.println(canBeAppended(s1, s2) ? "Yes" : "No");
        sc.close();
    }

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
private static boolean canBeAppended(String s1, String s2) {
               ^
  (use --enable-preview to enable unnamed classes)
1 error
Language: C

#include<bits/stdc++.h>
using namespace std;
#include<string.h>
int main()
{
    string s;
    string t;
    cin >> s;
    cin >> t;
    int n= s.length();
    int k = t.length();
    for(int i = 0;i<n;i++)
    {
        if(s[i] != t[i])
        {
            printf("NO\n");
            return 0;
        }
    }
    if(k > n)
    {
        printf("YES\n");
    }else
    {
        printf("NO\n");
    }
    return 0;
}


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

class Test{
  public static void main(String args[]){
    
    String input = args[0];
    String check = atgs[1];
    
	System.out.println(check.matches(input & "[a-z]"));
    
	}
}

Compiler output:
Main.java:5: error: cannot find symbol
    String check = atgs[1];
                   ^
  symbol:   variable atgs
  location: class Test
Main.java:7: error: bad operand types for binary operator '&'
	System.out.println(check.matches(input & "[a-z]"));
	                                       ^
  first type:  String
  second type: String
2 errors
Language: C++

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

long long int main() {
  long long int N;
  long long int K;

  cin >> N >> K;
  //cout << K;
  vector <long long int> A(N),a(N+1,0),b(N,-1);


  for(long long int i=0; i<N; i++){
    cin >> A.at(i);
    //A.at(i)=i+2;
    //A.at(N-1)=1;
  }



  for(long long int i=0; i<N+1; i++){
    if(i==0){
      a.at(i)=1;
    }
    else{
      a.at(i)=A.at(a.at(i-1)-1);
    }
    //cout << a.at(i) << " " ;
  }
  //cout << endl;

  /*
  for(long long int i=0;i<N;i++){
    cout << b.at(i) << " ";
  }
  cout << endl;
  */

  long long int num=0,count=0,cycle=N;
  while(b.at(a.at(num)-1)==-1&&num<N+1){
    b.at(a.at(num)-1)=num;
    num++;
  }

  /*
  for(long long int i=0;i<N;i++){
    cout << b.at(i) << " ";
  }
  cout << endl;
  */

  count = b.at(a.at(num)-1);
  cycle = num-b.at(a.at(num)-1);

  //cout << count << " " << cycle <<"asdfk"<<endl;
  K -= count;
  K %= cycle;


  cout << a.at(count+K)<<endl;

  //cout << goal << endl;

}


Compiler output:
a.cc:4:11: error: '::main' must return 'int'
    4 | long long int main() {
      |           ^~~
Language: C++

#include <stdio.h>
int main(){
  int a,b,c,k,M;
  scanf("%d%d%d%d",&a,&b,&c,&k);
  M=max(max(k,a),2*a+b-k);
  printf("%d",M);
  return 0;
}
     



Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'max' was not declared in this scope
    5 |   M=max(max(k,a),2*a+b-k);
      |         ^~~
a.cc:5:5: error: 'max' was not declared in this scope
    5 |   M=max(max(k,a),2*a+b-k);
      |     ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll   long long int
#define watch(x) cerr<<(#x)<<" is "<<x<<nl;
#define fi(a,b) for(ll i=a;i<b;i++)
#define fj(a,b) for(ll j=a;j<b;j++)
#define mp make_pair
#define ff first 
#define ss second
#define all(v) (v).begin(),(v).end()
#define pb(i) push_back(i)
#define mem(v,a) memset((v),a,sizeof(v));
#define mll map<ll,ll>
#define vll vector<ll>
#define nl endl
const long long inf=1e18+1e17;
const  int mod=998244353;
const ll  N=600032LL;
ll fac[N+2]; ll inv[N+2];

ll add(ll a,ll b){a+=b;if(a>=mod)a-=mod;if(a<0)a+=mod;return a;} 

ll mul(ll a,ll b){return ((a)*1LL*(b))%mod;}

ll power(ll a,ll n){ll res=1;while(n){if(n&1){
res=mul(res,a);} n>>=1,a=mul(a,a);}return res;}

ll fact(ll n){
	if(n==0||n==1)
		return 1;
	return n*fact(n-1);
}

void solve(){
	ll n,k;cin>>n>>k;
	vll v(n);
	fi(0,n)cin>>v[i];
	ll ar[n];memset(ar,0,sizeof(ar));
	ll i=0;
	for(;ar[i]==0&&k>0;i=v[i]-1){	k--;ar[i]++;}
	if(k<=0){cout<<i+1;return;}
	ll len=1;
	for(ll j=v[i]-1;j!=i;j=v[j]-1){	len++;}
	k=k%len;
	
	while(k-->0)	i=v[i]-1;
	cout<<i+1;
}
int main(){
	ll t;t=1;;8
	while(t--){
		solve();
	}
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:50:20: error: expected ';' before 'while'
   50 |         ll t;t=1;;8
      |                    ^
      |                    ;
   51 |         while(t--){
      |         ~~~~~
Language: C++

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

int main() {
  string S,T;
  cin >>S>>T;
  T.pop_back();
  if(S==T){
    cout <<"Yes"<<endl;
  }
  else[
    cout <<"No"<<endl;
    }
    
  
}
  


Compiler output:
a.cc: In function 'int main()':
a.cc:12:5: warning: capture of variable 'std::cout' with non-automatic storage duration
   12 |     cout <<"No"<<endl;
      |     ^~~~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:63:18: note: 'std::ostream std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:12:9: error: expected ',' before '<<' token
   12 |     cout <<"No"<<endl;
      |         ^~~
      |         ,
a.cc:12:10: error: expected identifier before '<<' token
   12 |     cout <<"No"<<endl;
      |          ^~
a.cc:12:22: error: expected ']' before ';' token
   12 |     cout <<"No"<<endl;
      |                      ^
      |                      ]
a.cc: In lambda function:
a.cc:12:22: error: expected '{' before ';' token
a.cc: At global scope:
a.cc:16:1: error: expected declaration before '}' token
   16 | }
      | ^
Language: C++

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

int main() {
  string S,T;
  cin >>S>>T;
  if(S==T.pop_back){
    cout <<"No" <<endl;
  }
  else{
    cout <<"No" <<endl;
  }

  
}
  


Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: invalid use of non-static member function 'void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pop_back() [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
    7 |   if(S==T.pop_back){
      |      ~^~~~~~~~~~~~
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:2174:7: note: declared here
 2174 |       pop_back() noexcept
      |       ^~~~~~~~
Language: C

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

int main(void){
	char s[10], t[11];  
	
	scanf("%s", s);
	scanf("%s", t);
  
	for (int i = 0; i < strlen(s); ++i){
		if (s[i] != t[i]) break;
	}
	
	if (i == strlen(s)) printf("Yes");
	else printf("No");
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:14:13: error: 'i' undeclared (first use in this function)
   14 |         if (i == strlen(s)) printf("Yes");
      |             ^
main.c:14:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C

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

int main(void){
	char s[10], t[11], str[10];  
	
	scanf("%s%s", s, t);
	
	for (int i = 0; i < strlen(s); ++i){
		if (s[i] != t[i]) break;
	}
	
	if (i == strlen(s)) printf("Yes");
	else printf("No");
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:13:13: error: 'i' undeclared (first use in this function)
   13 |         if (i == strlen(s)) printf("Yes");
      |             ^
main.c:13:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

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


int main() {
   string t2 = t.substr(0,t.size()-1);
if(t2==s)cout<<"Yes"<<endl;
else cout<<"No"<<endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: 't' was not declared in this scope; did you mean 't2'?
    6 |    string t2 = t.substr(0,t.size()-1);
      |                ^
      |                t2
a.cc:7:8: error: 's' was not declared in this scope
    7 | if(t2==s)cout<<"Yes"<<endl;
      |        ^
Language: C++

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

#define all(x) begin(x), end(x)

using i64 = int_fast64_t;
using f64 = double;

constexpr i64 INF = INT_FAST64_MAX / 2;
constexpr f64 EPS = DBL_EPSILON;

void solve() {
    string s, t;
    cin >> s >> t;
    t.pop_back()
    cout << (t == s ? "Yes" : "No") << endl;
}

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    cout << fixed << setprecision(15);
    solve();
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:15:17: error: expected ';' before 'cout'
   15 |     t.pop_back()
      |                 ^
      |                 ;
   16 |     cout << (t == s ? "Yes" : "No") << endl;
      |     ~~~~
Language: C++

clude<iostream>
#include<cstring>
using namespace std;
int main()
{
  string s,t;
  cin>>s;
  cin>>t;
  int x=s.length();
  if(t.compare(0,x,s)==0)
    cout<<"Yes";
  else
    cout<<"No";
  return 0;
  
}

Compiler output:
a.cc:1:1: error: 'clude' does not name a type
    1 | clude<iostream>
      | ^~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'string' was not declared in this scope
    6 |   string s,t;
      |   ^~~~~~
a.cc:3:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
    2 | #include<cstring>
  +++ |+#include <string>
    3 | using namespace std;
a.cc:7:3: error: 'cin' was not declared in this scope
    7 |   cin>>s;
      |   ^~~
a.cc:3:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    2 | #include<cstring>
  +++ |+#include <iostream>
    3 | using namespace std;
a.cc:7:8: error: 's' was not declared in this scope
    7 |   cin>>s;
      |        ^
a.cc:8:8: error: 't' was not declared in this scope
    8 |   cin>>t;
      |        ^
a.cc:11:5: error: 'cout' was not declared in this scope
   11 |     cout<<"Yes";
      |     ^~~~
a.cc:11:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:13:5: error: 'cout' was not declared in this scope
   13 |     cout<<"No";
      |     ^~~~
a.cc:13:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C

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

int main(void){
  char s[10] t[11], str[10];
  
  scanf("%s", &s);
  scanf("%s", &t);
  
  strncpy(str, t, strlen(s));
  
  if (str == s)
    printf("Yes");
  else 
    printf("No");
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before 't'
    5 |   char s[10] t[11], str[10];
      |              ^
main.c:5:14: error: 't' undeclared (first use in this function)
main.c:5:14: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:21: error: 'str' undeclared (first use in this function)
    5 |   char s[10] t[11], str[10];
      |                     ^~~
main.c:7:16: error: 's' undeclared (first use in this function)
    7 |   scanf("%s", &s);
      |                ^
Language: C++

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

#define all(x)        (x).begin(),(x).end()
#define eb            emplace_back
#define mp            make_pair
#define pb            push_back
#define fi            first
#define se            second
#define sz(x)         ((int)(x).size())
#define rep(x,y,z)    for(int x=y;x<z;x++)
#define per(x,z,y)    for(int x=z-1;x>=y;x--)
#define trav(y,x)     for(auto& y:x)
#define pii           pair<int, int>
#define pll           pair<ll, ll>
#define vi            vector<int>
#define vpi           vector<pii>

int dbg = 0;
#define cri           if(0)
#define shame         cri cerr<<(++dbg)<<"\n\n";

// aaaaaaaaaaaaaaaa
void solve() {
  string s, t; cin >> s >> t;
  if (s == t.substring(0, sz(s)))
    cout << "Yes";
  else
    cout << "No";
  cout << '\n';
}

int main() {
  // int _; scanf("%d", &_); while (_--)
  // ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  // int _; cin >> _; while(_--)
  solve();
	return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:27:14: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'substring'; did you mean 'substr'?
   27 |   if (s == t.substring(0, sz(s)))
      |              ^~~~~~~~~
      |              substr
Language: C++

#include <bits/stdc++.h>

using namespace std;

#define endl "\n"
#define F first
#define S second
#define PB push_back
#define int long long

typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vii;

const int maxn = 1e5;
const int OO = 1e18;
const int mod = 1e9 + 7;
const int maxp = 67;

int32_t main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

//	freopen("name.in","r",stdin);
//	freopen("name.out","w",stdout);

    unsigned lon long n,k;
    cin >> n >> k;
    int a[n+1][maxp];
    memset(a,-1,sizeof(a));

    for(int i=1;i<=n;i++)
        cin >> a[i][0];

    for(int i=1;i<maxp;i++)
    {
        for(int j=1;j<=n;j++)
        {
            if(a[j][i-1] != -1)
            a[j][i] = a[a[j][i-1]][i-1];
        }
    }
    int y = 1;
    for(int i=0;i<maxp;i++)
    {
     
        if(k & (1<<i))
        {
            y = a[y][i];
        }
    }

    cout << y;
	return 0;
}


Compiler output:
a.cc: In function 'int32_t main()':
a.cc:29:18: error: expected initializer before 'long'
   29 |     unsigned lon long n,k;
      |                  ^~~~
a.cc:30:12: error: 'n' was not declared in this scope; did you mean 'yn'?
   30 |     cin >> n >> k;
      |            ^
      |            yn
a.cc:30:17: error: 'k' was not declared in this scope
   30 |     cin >> n >> k;
      |                 ^
a.cc:32:12: error: 'a' was not declared in this scope
   32 |     memset(a,-1,sizeof(a));
      |            ^
Language: Java

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

class contest{
	public static void main(String args[]){
    	Scanner s = new Scanner(System.in);
      	String str1 = s.nextLine();
      	String str2 = s.nextLine();
      
      	char arr1[] = str1.toCharArray();
       	char arr2[] = str2.toCharArray();
      	
      	for(int i=0;i<arr1.length;i++){
        	if(arr1[i]!=arr2[i]){
            	break;
            }
        }
      	if(i==arr1.length){
        	System.out.println("Yes");
        }else{
        	System.out.println("No");
        }
    }
}

Compiler output:
Main.java:18: error: cannot find symbol
      	if(i==arr1.length){
      	   ^
  symbol:   variable i
  location: class contest
1 error
Language: C++

#include<bits/stc++.h>
using namespace std;
int main()
{
  string s,t;
  cin>>s;
  cin>>t;
  int x=s.length();
  if(s.compare(0,x-2,t)==0)
    cout<<"Yes";
  else
    cout<<"No";
  return 0;
  
}

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

import java.io.*;

class contest{
	public static void main(String args[]){
    	Scanner s = new Scanner(System.in);
      	String str1 = s.nextLine();
      	String str2 = s.nextLine();
      
      	char arr1[] = str1.toCharArray();
       	char arr2[] = str2.toCharArray();
      	
      	for(int i=0;i<arr1.length;i++){
        	if(arr1[i]!=arr2[i]){
            	break;
            }
        }
      	if(i==arr1.length){
        	System.out.println("Yes");
        }else{
        	System.out.println("No");
        }
    }
}

Compiler output:
Main.java:5: error: cannot find symbol
    	Scanner s = new Scanner(System.in);
    	^
  symbol:   class Scanner
  location: class contest
Main.java:5: error: cannot find symbol
    	Scanner s = new Scanner(System.in);
    	                ^
  symbol:   class Scanner
  location: class contest
Main.java:17: error: cannot find symbol
      	if(i==arr1.length){
      	   ^
  symbol:   variable i
  location: class contest
3 errors
Language: C

#include<stdio.h>
#include<string.h>
int main(void){
  int i;
  char s[11], t[12];
  scanf("%s%s", &s ,&t);
  for(i=0;i<strlen(s);i++){
      if(s[i]!=t[i]) break;
  }
  if(i==strlen(s){
    printf("Yes");
  }
  else{
    printf("No");
  }
  return 0;
}
  
  


Compiler output:
main.c: In function 'main':
main.c:10:18: error: expected ')' before '{' token
   10 |   if(i==strlen(s){
      |     ~            ^
      |                  )
main.c:17:1: error: expected expression before '}' token
   17 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{	   


string a;
cin >> a ;
string b;
cin >> b ;
if(a==b||b.size()!=a.size()+1)
{
	cout << "No" ;
}
else
{
	long long int  count=0;
for(unsigned long long long  i=0; i<a.size(); i++)
{
	if(a[i]!=b[i])
	{
		cout << "No" ;
		count=1;
	}
}
if(count==0)
{
cout << "Yes" ;
}
}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:24: error: 'long long long' is too long for GCC
   18 | for(unsigned long long long  i=0; i<a.size(); i++)
      |                        ^~~~
Language: C++

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

int main() {
  ll N, M, X, sumprice = 0, min = 10000000;
  cin >> N >> M >> X;
  vector<ll> C(12, 0), sum(M, 0);
  vector<vector<ll>> A(12, vector<ll>(M));
  bool judge = 1;
  for(ll i = 0; i < N; i++) {
    cin >> C.at(i);
    sumprice += C.at(i);
    for(ll j = 0; j < M; j++) {
      cin >> A.at(i).at(j);
      sum.at(j) += A.at(i).at(j);
      if((i == N - 1) && (sum.at(j) < X)) judge = 0;
    }
  }
  if(judge == 0) cout << -1 << endl;
  else {
    vector<ll> sumcharge(M);
    ll sumpricecharge;
    for(ll i = 0; i < M; i++) sumcharge.at(i) = sum.at(i);
    sumpricecharge = sumprice;
    for(ll i = 0; i < pow(2, N); i++) {
      for(ll k = 0; k < M; k++) sum.at(k) = sumcharge.at(k);
      sumprice = sumpricecharge;
      for(ll l = 0; l < 12; l++) {
        if((i / pow(2, l) % 2 == 1) {
          for(ll j = 0; j < M; j++) sum.at(j) -= A.at(l).at(j);
          sumprice -= C.at(l);
        }
      }
      for(ll j = 0; j < M; j++) {
        if(sum.at(j) < X) break;
        if((j == M - 1) && (sumprice < min)) min = sumprice;
      }
    }
    cout << min << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:32:27: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and 'int' to binary 'operator%'
   32 |         if((i / pow(2, l) % 2 == 1) {
      |             ~~~~~~~~~~~~~ ^ ~
      |               |             |
      |               |             int
      |               __gnu_cxx::__promote<double>::__type {aka double}
a.cc:32:36: error: expected ')' before '{' token
   32 |         if((i / pow(2, l) % 2 == 1) {
      |           ~                        ^~
      |                                    )
a.cc:36:7: error: expected primary-expression before '}' token
   36 |       }
      |       ^
Language: C

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

int main() {
    char S[10],T[11];
    long len_S,len_T;
    
    scanf("%s",S);
    scanf("%s",T);
    
    len_S = strlen(S);
    len_T = strlen(T);
    
    if (strncmp(S,T,len_S) == 0){
        if (T == S + 1){
            printf("Yes\n");
            return 0;
        }
        
    printf("No\n");
        
    
    /*if (len_T != len_S + 1 || len_S < 1 || len_S > 10){
        printf("No\n");
    }else{
        if (strncmp(S,T,len_S) == 0){
            printf("Yes\n");
        }else{
            printf("No\n");
        }
    }*/
    
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:34:1: error: expected declaration or statement at end of input
   34 | }
      | ^
Language: C

#include<stdio.h>
int main()
{
	char s[10],t[11];  
  	scanf("%s",&s);
  	scanf("%s",&t);
  	int count=0,c=0,c1=0;
  	for(int i=0;s[i]!='\0';i++)
    {
      	count++;
      	if(s[i]==t[i])
        {
          	c++;
        }
    }
  	for(int i=0;t[i]!='\0';i++)
    {
      	c1++;
    }
  	if(count==c && c1==c+1)
    {
      printf("YES\n");
    }
  	else
    {
      printf("NO\n);
    }
             return 0;
}  

Compiler output:
main.c: In function 'main':
main.c:26:14: warning: missing terminating " character
   26 |       printf("NO\n);
      |              ^
main.c:26:14: error: missing terminating " character
   26 |       printf("NO\n);
      |              ^~~~~~~
main.c:27:5: error: expected expression before '}' token
   27 |     }
      |     ^
main.c:26:14: error: expected ';' before '}' token
   26 |       printf("NO\n);
      |              ^
      |              ;
   27 |     }
      |     ~
Language: C++

int main() {
   
 
  
    string s,t;
    cin>>s>>t;
    for(int i = 0 ; i <s.size();i++){
        if(s[i]!=t[i]){
            cout<<"No";
            return 0;
        }
    }
    if(s.size()+1 == t.size()){
        cout<<"Yes";
        return 0;
    }
    cout<<"No";
 
 
 
    
 
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'string' was not declared in this scope
    5 |     string s,t;
      |     ^~~~~~
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin>>s>>t;
      |     ^~~
a.cc:6:10: error: 's' was not declared in this scope
    6 |     cin>>s>>t;
      |          ^
a.cc:6:13: error: 't' was not declared in this scope
    6 |     cin>>s>>t;
      |             ^
a.cc:9:13: error: 'cout' was not declared in this scope
    9 |             cout<<"No";
      |             ^~~~
a.cc:14:9: error: 'cout' was not declared in this scope
   14 |         cout<<"Yes";
      |         ^~~~
a.cc:17:5: error: 'cout' was not declared in this scope
   17 |     cout<<"No";
      |     ^~~~
Language: C++

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

int main{
  string S,T;
  cin >> S >> T;
  int N = S.size();
  bool answer = true;
  for(int i = 0 ; i < N ; i++){
    if(S.at(i) != T.at(i)){
      answer = false;
    }
    }
    if(answer){
      cout << "Yes" << endl;
    }
    else{
      cout << "No" << endl;
    }
  }

Compiler output:
a.cc:4:5: error: cannot declare '::main' to be a global variable
    4 | int main{
      |     ^~~~
a.cc:5:10: error: expected primary-expression before 'S'
    5 |   string S,T;
      |          ^
a.cc:5:10: error: expected '}' before 'S'
a.cc:4:9: note: to match this '{'
    4 | int main{
      |         ^
a.cc:6:3: error: 'cin' does not name a type
    6 |   cin >> S >> T;
      |   ^~~
a.cc:7:11: error: 'S' was not declared in this scope
    7 |   int N = S.size();
      |           ^
a.cc:9:3: error: expected unqualified-id before 'for'
    9 |   for(int i = 0 ; i < N ; i++){
      |   ^~~
a.cc:9:19: error: 'i' does not name a type
    9 |   for(int i = 0 ; i < N ; i++){
      |                   ^
a.cc:9:27: error: 'i' does not name a type
    9 |   for(int i = 0 ; i < N ; i++){
      |                           ^
a.cc:14:5: error: expected unqualified-id before 'if'
   14 |     if(answer){
      |     ^~
a.cc:17:5: error: expected unqualified-id before 'else'
   17 |     else{
      |     ^~~~
a.cc:20:3: error: expected declaration before '}' token
   20 |   }
      |   ^
Language: C

#include<stdio.h>
int main()
{
	char s[10],t[11];  
  	scanf("%s",s);
  	scanf("%s",t);
  	int count=0,c=0,c1=0;
  	for(int i=0;s[i]!='\0';i++)
    {
      	count++;
      	if(s[i]==t[i])
        {
          	c++;
        }
    }
  	for(int i=0;t[i]!='\0';i++)
    {
      	c1++;
    }
  	if(count==c && c1=c+1)
    {
      printf("YES\n");
    }
  	else
    {
      printf("NO\n");
    }
             return 0;
}  

Compiler output:
main.c: In function 'main':
main.c:20:26: error: lvalue required as left operand of assignment
   20 |         if(count==c && c1=c+1)
      |                          ^
Language: C

#include<stdio.h>
int main()
{
	char s[10],t[11];  
  	scanf("%s",s);
  	scanf("%s",t);
  	int count=0,c=0,c1=0;
  	for(int i=0;s[i]!='\0';i++)
    {
      	count++;
      	if(s[i]==t[i])
        {
          	c++;
        }
    }
  	for(int i=0;t[i]!='\0';i++)
    {
      	c1++;
    }
  	if(count==c && c1=c+1)
    {
      printf("YES\n");
    }
  	else
    {
      printf("NO\n);
    }
             return 0;
}  

Compiler output:
main.c: In function 'main':
main.c:20:26: error: lvalue required as left operand of assignment
   20 |         if(count==c && c1=c+1)
      |                          ^
main.c:26:14: warning: missing terminating " character
   26 |       printf("NO\n);
      |              ^
main.c:26:14: error: missing terminating " character
   26 |       printf("NO\n);
      |              ^~~~~~~
main.c:27:5: error: expected expression before '}' token
   27 |     }
      |     ^
main.c:26:14: error: expected ';' before '}' token
   26 |       printf("NO\n);
      |              ^
      |              ;
   27 |     }
      |     ~
Language: C++

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

int main() {
  string s, t;
  cin >> s >> t;
  
  if(s == t - t[t.size() - 1]) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
}  

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inclide; did you mean #include?
    1 | #inclide <bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:5:3: error: 'string' was not declared in this scope
    5 |   string s, t;
      |   ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | #inclide <bits/stdc++.h>
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> s >> t;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #inclide <bits/stdc++.h>
a.cc:6:10: error: 's' was not declared in this scope
    6 |   cin >> s >> t;
      |          ^
a.cc:6:15: error: 't' was not declared in this scope
    6 |   cin >> s >> t;
      |               ^
a.cc:9:5: error: 'cout' was not declared in this scope
    9 |     cout << "Yes" << endl;
      |     ^~~~
a.cc:9:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:9:22: error: 'endl' was not declared in this scope
    9 |     cout << "Yes" << endl;
      |                      ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #inclide <bits/stdc++.h>
a.cc:11:5: error: 'cout' was not declared in this scope
   11 |     cout << "No" << endl;
      |     ^~~~
a.cc:11:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:11:21: error: 'endl' was not declared in this scope
   11 |     cout << "No" << endl;
      |                     ^~~~
a.cc:11:21: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
 string s;
 string t;
cin>>s;
cin>>t;
int k=0;
  for(unsigned i=0; i<s.length(); ++i){
    if(s.at(i)==t.at(i)){
        k++;
    }
  int l=s.length();
  if(k==l){
    cout<<"YES"<<endl;
  }
  else{
    cout<<"NO"<<endl;
  }
}




Compiler output:
a.cc: In function 'int main()':
a.cc:21:2: error: expected '}' at end of input
   21 | }
      |  ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
 string s;
 string t;
cin>>s;
cin>>t;
int k=0;
  for(unsigned i=0; i<s.length(); ++i){
    if(s.at(i)==t.at(i)){
        k++;
    }
  int l=s.length();
  if(k==l){
    cout<<"YES"<<endl;
  }
  else{
    cout<<"NO"<<endl;
  }
}
else{
    cout<<"NO"<<endl;
}

}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:1: error: 'else' without a previous 'if'
   22 | else{
      | ^~~~
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
 string s;
 string t;
cin>>s;
cin>>t;
int k=0;
  for(unsigned i=0; i<s.length(); ++i){
    if(s.at(i)==t.at(i)){
        k++;
    }
  }
  int l=s.length();
  if(k==l){
    cout<<"YES"<<endl;
  }
  else{
    cout<<"NO"<<endl;
  }
}


}

Compiler output:
a.cc:25:1: error: expected declaration before '}' token
   25 | }
      | ^
Language: C++

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

int main() {
  string S,T;
  cin >> S >> T;
  int N = S.size();
  bool answer = true;
  
  for (int i=0 ; p<N ; p++) {
    
    if ( S.at(i)!=T.at(i)){
        answer = false;
    } 
  }
  
  if ( answer ) {
    cout << "YES" << endl;
  }
  else {
    cout << "NO" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:18: error: 'p' was not declared in this scope
   10 |   for (int i=0 ; p<N ; p++) {
      |                  ^
Language: C++

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
 
int main() {
	// your code goes here
string s,t; int f =0;
cin>>s;
cin>>t;
int x = s.length();
int y = t.length();


 
for(int i =0; i<x ;i++)
{ 
if(s[i]==t[i])
f ++;;
}
if (f== )
cout<<"Yes";
else
cout<<"No";
 
 
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:9: error: expected primary-expression before ')' token
   20 | if (f== )
      |         ^
Language: C++

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

int main() {
  string S,T;
  cin >> S >> T;
  string X = qwertyuiopasdfghjklzxcvbnm;
    
    for(int i = 0;i < 26;i++){
      char Y = at.X(i);
      if(T == S + Y){
        cout << "Yes" << endl;
      break;
      }
      else{
        cout << "No" << endl;
      break;
      }
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:14: error: 'qwertyuiopasdfghjklzxcvbnm' was not declared in this scope
    7 |   string X = qwertyuiopasdfghjklzxcvbnm;
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:10:16: error: 'at' was not declared in this scope
   10 |       char Y = at.X(i);
      |                ^~
Language: C++

#include<iostream>
using namespace std;

typedef long long int ll;
typedef unsigned long long int ull;

#define test(t)		int t; cin>>t; while(t--)
#define all(a)		a.begin(), a.end()
#define f(i, a, b)	for(int i = a; i < b; ++i)
#define endl 		"\n"
#define deb(x)		cout << #x << "--" << x << "--" << endl;
#define deb2(x,y)	cout << #x << "--" << x << "--" << endl <<  #y << "--" << y << "--" << endl;
#define fast 		ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);

#define mx9		1000000007
#define mx7		10000007
#define mx6		1000006
#define mx5		200005
#define inf		1<<30                                 
#define eps		1e-9
#define mod		1000000007

void solve()
{
  string s, t;
  cin >> s;
  cin >> t;
  if(t.substr(0, s.length()) == s)
	cout << "Yes" << endl;
  else
    cout << "NO" << endl;
int main()
{
     fast;
     //test(t)
          solve();
     return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:32:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   32 | int main()
      |         ^~
a.cc:32:9: note: remove parentheses to default-initialize a variable
   32 | int main()
      |         ^~
      |         --
a.cc:32:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:33:1: error: a function-definition is not allowed here before '{' token
   33 | {
      | ^
a.cc:38:2: error: expected '}' at end of input
   38 | }
      |  ^
a.cc:24:1: note: to match this '{'
   24 | {
      | ^
Language: Java

import java.util.Scanner;

public class Registration {

    private static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {

        solve();
    }

    private static void solve() {

        String s1 = scanner.next();
        String s2 = scanner.next();


        System.out.println(s2.startsWith(s1) && s2.length() == s1.length() + 1 ? "Yes" : "No");

    }
}

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

#include<bits/stdc++.h>
using namespace std;
long long int main()
{
  vector<long long int> v1,v2,v3;
  long long int a,i, b,c,k,s=0;
  cin>>a>>b>>c>>k;
  v1.resize(a,1);
  v2.resize(b,0);
  v3.resize(c,-1);
  
  for(i=0;i<k;i++){
  if(v1.size()>0){
  s=s+v1[0]; a--; v1.resize(a,1);
  }
  else if(v2.size()>0){
  s=s+v2[0];  b--; v2.resize(b,0); }
  
  else if(v3.size()>0){
  s=s+v3[0]; c--; v3.resize(c,-1);}
  
  else
  s=s+0;
  }
  
  cout<<s;
  
return 0;
    }

Compiler output:
a.cc:3:11: error: '::main' must return 'int'
    3 | long long int main()
      |           ^~~
Language: C

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

int main()
{
    std::string S, T;

    int x;

    std::cin >> S >> T;

    for(int i = 0; i < S.length(); i++)
    {
        if(S[i] != T[i])
        {
            x = -2;
        }
    }

    if(x == -2)
        printf("No\n");
    else
    printf("Yes\n");

    return 0;
}

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

#include<bits/stdc++.h>
using namespace std;
#define int long long int
vector<vector <int> > g;
vector<int> lol;
int visited[200005],mark[200005],par[200005];
int k;
void dfs(int p,int a)
{
    int i;
    if(visited[a] == 2)
        return;
    if(visited[a] == 1)
    {
        int cur = p;
        mark[cur] = -1;
        while(cur != a)
        {
            cur = par[cur];
            mark[cur] = -1;
        }
        return;
    }
    par[a] = p;
    visited[a] = 1;

    for(auto v : g[a])
    {
        if(v == par[a])
            continue;
        dfs(a,v);
    }
    visited[a] = 2;
}
void dfs2(int a)
{
    if(a == lol[0])
        return;
    else
    {
        visited[a] = 1;
        for(auto v : g[a])
        {
            if(visited[v] != 0)
                continue;
            k--;
            dfs2(v);
        }
    }
}
int main(void)
{
    int n,i;
    cin>>n>>k;
    g.resize(n+1);
    for(i=1;i<=n;i++)
    {
        visited[i] = 0;
        mark[i] = 0;
        int x;
        cin>>x;
        g[x].push_back(i);
        g[i].push_back(x);
    }
    dfs(0,1);
    for(i=1;i<=n;i++)
    {
        visited[i] = 0;
        if(mark[i] == -1)
            lol.push_back(i);
    }
    dfs2(1);
    cout<<lol[k%lol.size()]<<endl;
    return 0;
}


Compiler output:
a.cc:3:23: error: '::main' must return 'int'
    3 | #define int long long int
      |                       ^~~
a.cc:51:1: note: in expansion of macro 'int'
   51 | int main(void)
      | ^~~
Language: C++

#include <string>
using namespace std;
int main() {
  string a, b, c, d, e, f;
  cin >> a;
  cin >> b;
  
  c = c.assign(a, 0, a.length() - 1);
  d = d.assign(a, 1, a.length());
  
  e = e.assign(b, 0, b.length() -1);
  f = f.assign(b, 1, b.length());
  
  if (c == b || d == b || a==e || a==f)
    cout << "Yes";b
  else
    cout << "No";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> a;
      |   ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <string>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:15:5: error: 'cout' was not declared in this scope
   15 |     cout << "Yes";b
      |     ^~~~
a.cc:15:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:15:20: error: expected ';' before 'else'
   15 |     cout << "Yes";b
      |                    ^
      |                    ;
   16 |   else
      |   ~~~~
Language: C++

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

int main() {
  string S,T;
  cin >> S >> T;
  string X = qwertyuiopasdfghjklzxcvbnm;
    
    for(int i = 0;i < 26;i++){
      char Y = at.X(i);
      if(T == S + Y){
        cout << "Yes" << endl;
      }
      else{
        cout << "No" << endl;
      }
      }
}
   

Compiler output:
a.cc: In function 'int main()':
a.cc:7:14: error: 'qwertyuiopasdfghjklzxcvbnm' was not declared in this scope
    7 |   string X = qwertyuiopasdfghjklzxcvbnm;
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:10:16: error: 'at' was not declared in this scope
   10 |       char Y = at.X(i);
      |                ^~
Language: C++

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

int main() {
  long long long A, B, C, K;
  cin >> A >> B >> C >> K;
  long long long ans = 0;
  
  if (K <= A) {
    ans = A;
  }
  else if (K <= (A + B)) {
    ans = A;
  }
  else {
    ans = 2 * A + B - K;
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:13: error: 'long long long' is too long for GCC
    5 |   long long long A, B, C, K;
      |             ^~~~
a.cc:7:13: error: 'long long long' is too long for GCC
    7 |   long long long ans = 0;
      |             ^~~~
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main() {
  string a, b, c, d, e, f;
  cin >> a;
  cin >> b;
  c = c.append(a, 0, a.length() - 1);
  d = d.append(a, 1, a.length());
  e = e.append(b, 0, b.length() -1);
  f = f.append(b, 1, b.length());
  if (c == b || d == b || a==e || a==f)
    cout << "Yes";b
  else
    cout << "No";
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:20: error: expected ';' before 'else'
   13 |     cout << "Yes";b
      |                    ^
      |                    ;
   14 |   else
      |   ~~~~
Language: C++

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

#define NM_MAX 12

class Book
{
private:
    unsigned int price;
    vector<int> progress;
    
public:
    unsigned int total_val;
    
    void set_price(unsigned int p){
        price = p;
    }
    
    void set_progress(vector<int> vec){
        progress = vec;
    }

    void calc_total_val(){
        total_val = accumulate(progress.begin(), progress.end(), 0);
    }

    unsigned int get_price(){
        return price;
    }
    unsigned int get_progress(unsigned int i){
        return progress[i];
    }

    bool operator<( const Book& right ) const {
        return total_val < right.total_val;
    }
};

class Takahashi
{
private:
    unsigned int progress[NM_MAX];



int is_possible(vector<Book> books, unsigned int n, unsigned int m, unsigned int x){
    unsigned int i, j;

    vector<int> sum(m, 0);

    for( j=0; j < m; j++ ){
        unsigned int sum = 0;
        for ( i=0; i < n; i++){
            sum += books[i].get_progress(j);
        }
        //cout << sum << endl;
        if( sum < x ){
            //cout << sum << "," << x << endl;
            return -1;
        }
    }
    return 1;
}



int main(){
    unsigned int N, M, X;
    cin >> N >> M >> X;
    
    unsigned int i;
    vector<Book> books(N);
    for( i=0; i < N; i++){
        vector<int> vec(M+1);

        for (unsigned int j = 0; j < M+1; j++) {
            cin >> vec.at(j);
        }

        books[i].set_price(vec[0]);
        vec.erase(vec.begin());
        books[i].set_progress(vec);
        books[i].calc_total_val();
    }

    if( is_possible(books, N, M, X) == -1 ){
        cout << -1 << endl;
        return 0;
    }


    sort(books.begin(), books.end());
    vector<unsigned int> takahashi(M, 0);
    unsigned int total_fee = 0;
    for( i=0; i < N;i++){
        unsigned int j;
        for( j=0; j < M; j++){
            takahashi[j] += books[N-i-1].get_progress(j);
        }
        
        total_fee += books[N-i-1].get_price();

        bool flag = false;
        for( j=0; j < M; j++){
            if( takahashi[j] < X ){
                flag = true;
                break;
            }
        }
        if( flag == false) {
            break;
        }
    }
    cout << total_fee << endl;
    


    return 0;
}

Compiler output:
a.cc:121:2: error: expected '}' at end of input
  121 | }
      |  ^
a.cc:42:1: note: to match this '{'
   42 | {
      | ^
a.cc:121:2: error: expected unqualified-id at end of input
  121 | }
      |  ^