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

#include<stdio.h>
using namespace std;
int main()
{
  int a,b;
  cin>>a>>b;
  cout<<a*b;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin>>a>>b;
      |   ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include<stdio.h>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:7:3: error: 'cout' was not declared in this scope
    7 |   cout<<a*b;
      |   ^~~~
a.cc:7:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

#include <bits/stdc++.h>
#include <stdio.h>
#define ll long long
#define m 1000000007
using namespace std;
int main() {
      int a,b;
      cin>>a>>b;
      std::cout << a*b << std::endl;
    }
	return 0;
}


Compiler output:
a.cc:11:9: error: expected unqualified-id before 'return'
   11 |         return 0;
      |         ^~~~~~
a.cc:12:1: error: expected declaration before '}' token
   12 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  ll a;
  ll b;
  cout<<a*b<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'll' was not declared in this scope
    5 |   ll a;
      |   ^~
a.cc:6:5: error: expected ';' before 'b'
    6 |   ll b;
      |     ^~
      |     ;
a.cc:7:9: error: 'a' was not declared in this scope
    7 |   cout<<a*b<<endl;
      |         ^
a.cc:7:11: error: 'b' was not declared in this scope
    7 |   cout<<a*b<<endl;
      |           ^
Language: C++

#include<bits/stdc++.h>

int main()
{
	int a,b;
    cin>>a>>b;
    cout<<a*b<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |     cin>>a>>b;
      |     ^~~
      |     std::cin
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:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |     cout<<a*b<<endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:16: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |     cout<<a*b<<endl;
      |                ^~~~
      |                std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C

#include <bits/stdc++.h>

using namespace std;

#define db(x) cout << (x) << '\n';
#define all(x) x.begin(),x.end()
#define UNIQUE(x) sort(all(x)),x.resize(unique(all(x))-x.begin())
#define LB(v,x) lower_bound(all(v),x)
#define UB(v,x) upper_bound(all(v),x)
#define endl "\n"
#define F first
#define S second
#define PB push_back
#define PF push_front
#define int long long
#define trick int m = (l+r)>>1,lc=n<<1,rc=lc|1

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

int dy[]={0,1,1,1,0,-1,-1,-1};
int dx[]={-1,-1,0,1,1,1,0,-1};
const int maxn = 1e5;
const int OO = 1e18;
const int mod = 1e9 + 7;
const double PI = acos(-1);

void maxself(int &a,int b)
{a=max(a,b);}
void minself(int &a,int b)
{a=min(a,b);}

int n,m,x,y,mx;
vi v;
vector<vi> g(maxn);
int a[maxn],b[maxn];
string s;

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);

	cin >> x >> y;
	
	for(int i=0;i<0;i++)
	{

	}
	cout << x * y;

	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>
#define rep(i,n) for(int i=0;i<(int)n;i++)
#define ll long long
using namespace std;

int main(){
    int A,B;
    cin>>A>>B;
    cout<<A*B<<endl;

    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<iostream>
using namespce std;
int main()
{
  int a,b;
  cin>>a>>b;
  cout<<a*b;
}
  

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namespce'
    2 | using namespce std;
      |       ^~~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin>>a>>b;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout<<a*b;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std
  
int main(){
  int a, b;
  cin >> a >> b;
  
  cout << a * b << endl;
}


Compiler output:
a.cc:2:20: error: expected ';' before 'int'
    2 | using namespace std
      |                    ^
      |                    ;
    3 | 
    4 | int main(){
      | ~~~
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0; i < n; i++)
#define REPR(i, n) for(int i = n; i >= 0; i--)
#define FOR(i, m, n) for(int i = m; i < n; i++)
#define INF 2e9
#define ALL(v) v.begin(), v.end()
using namespace std;
typedef long long ll;


int main(){
 int A,B;
  cin >> A >>B;
  cout << A*B
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:14: error: expected ';' before '}' token
   14 |   cout << A*B
      |              ^
      |              ;
   15 | }
      | ~
Language: C

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

int main() {
  int a, b;
  cin >> a >> b;
  cout << a * b << endl;
  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 n.m;
int main()
{
	cin>>n>>m;
	cout<<n*m;
}


Compiler output:
a.cc:3:6: error: expected initializer before '.' token
    3 | int n.m;
      |      ^
a.cc: In function 'int main()':
a.cc:6:14: error: 'n' was not declared in this scope; did you mean 'yn'?
    6 |         cin>>n>>m;
      |              ^
      |              yn
a.cc:6:17: error: 'm' was not declared in this scope; did you mean 'tm'?
    6 |         cin>>n>>m;
      |                 ^
      |                 tm
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int A B;
  cin >> A >> B;
  A = A * B;
  cout << A << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: expected initializer before 'B'
    5 |   int A B;
      |         ^
a.cc:6:10: error: 'A' was not declared in this scope
    6 |   cin >> A >> B;
      |          ^
a.cc:6:15: error: 'B' was not declared in this scope
    6 |   cin >> A >> B;
      |               ^
Language: C++

#include<bits/stdc++>
using namespace std;
int main(){
  int a,b;
  cin>>a>>b;
  cout<<a*b<<endl;
}

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

#include <bits/stdc++.h>

#define endl '\n'
#define rep(i,s,n) for (int i = s; i < (n); ++i)

typedef long long ll;
typedef unsigned long long ull;

using namespace std;

int main() {
	// make input and output more efficient
	ios::sync_with_stdio(0);
	cin.tie(0);

	int tests, b;
	cin >> tests >> b;

    cout << a * b << endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:13: error: 'a' was not declared in this scope
   19 |     cout << a * b << endl;
      |             ^
Language: C++

#include<iostream>
int main(){
  int a,b;
  std::cin>>a>>b;
  stdc::cout<<a*b<<std::endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'stdc' has not been declared
    5 |   stdc::cout<<a*b<<std::endl;
      |   ^~~~
Language: C++

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

#define int long long int 

int32_t main()
{
 IOS;
  int a,b;
  cin>>a>>b;
  cout<<a*b<<endl;
  
  return 0;
  
}

Compiler output:
a.cc: In function 'int32_t main()':
a.cc:8:2: error: 'IOS' was not declared in this scope
    8 |  IOS;
      |  ^~~
Language: C++

#include<iostream>

int main() {
  int a, b;
  cin >> a >>b;
  return a*b;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin >> a >>b;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
Language: C++

#include <iostream>

int main()
{
  int n,m;
  cin>>n>>m;
  cout<<n*m<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin>>n>>m;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout<<n*m<<endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:14: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |   cout<<n*m<<endl;
      |              ^~~~
      |              std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <iostream>
using namespace std;
#define fo(i, a, b) for (int i=a; i<(b); i++)
#define forev(i, b, a) for (int i = (b)-1; i >= a; i--)
typedef long long 		ll;
typedef long double 	ld;
typedef complex<ld> 	cd;
typedef pair<int, int> 	pi;
typedef pair<ll, ll> 	pl;
typedef pair<ld, ld> 	pd;
typedef vector<int> 	vi;
typedef vector<ld> 		vd;
typedef vector<ll> 		vl;
typedef vector<pi> 		vpi;
typedef vector<pl> 		vpl;
typedef vector<cd> 		vcd;
#define mp 				make_pair
#define pb 				push_back
#define ff 				first
#define ss 				second
#define lb 				lower_bound
#define ub 				upper_bound
#define all(x) x.begin(), x.end()
#define sortall(x) sort(all(x))
#define endl 			"\n"
#define fast 			ios_base::sync_with_stdio(0); cin.tie(0);
// #define PI 3.1415926535897932384626
// const int MOD = 1000000007;
// const ll INF = 1e18;
// const int MX = 100001;
//==================================================================================

int main() {
	// freopen("input.txt", "r", stdin);
	fast;
	// int t; cin >> t; while (t--)

	int a, b; cin >> a >> b;

	cout << a*b << endl;

	return 0;
}

Compiler output:
a.cc:7:9: error: 'complex' does not name a type
    7 | typedef complex<ld>     cd;
      |         ^~~~~~~
a.cc:11:9: error: 'vector' does not name a type
   11 | typedef vector<int>     vi;
      |         ^~~~~~
a.cc:12:9: error: 'vector' does not name a type
   12 | typedef vector<ld>              vd;
      |         ^~~~~~
a.cc:13:9: error: 'vector' does not name a type
   13 | typedef vector<ll>              vl;
      |         ^~~~~~
a.cc:14:9: error: 'vector' does not name a type
   14 | typedef vector<pi>              vpi;
      |         ^~~~~~
a.cc:15:9: error: 'vector' does not name a type
   15 | typedef vector<pl>              vpl;
      |         ^~~~~~
a.cc:16:9: error: 'vector' does not name a type
   16 | typedef vector<cd>              vcd;
      |         ^~~~~~
Language: C++

#include <iostream>
using namespace std;

int main() {
	cin >> a >> b >>endl;
    cout << a*b <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:16: error: 'a' was not declared in this scope
    5 |         cin >> a >> b >>endl;
      |                ^
a.cc:5:21: error: 'b' was not declared in this scope
    5 |         cin >> a >> b >>endl;
      |                     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define fio ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL);
#define Mod 1000000007
#define ll long long
#define dd double
#define pb push_back
#define ff first
#define ss second
#define Mp make_pair
#define INF 999999999999999999
#define NN (ll)(1e6+5)
int mod(string s,int a) 
{ 
    int ans=0; 
    for (int i=0;i<s.length();i++) 
         ans=(ans*10+(int)s[i]-'0')%a; 
    return ans; 
}
ll min(ll x,ll y){if(x<y) return x;return y;}
ll max(ll x,ll y){if(x>y) return x;return y;}
ll power(ll x,unsigned ll y) 
{ 
    if (y==0) 
        return 1; 
    else if (y%2==0) 
        return power(x,y/2)*power(x,y/2); 
    else
        return x*power(x,y/2)*power(x,y/2); 
}
ll hcf(ll a,ll b) 
{ 
    if(b==0) 
        return a; 
    return hcf(b,a%b);  
}
int main()
{
   fio;
   /*#ifndef ONLINE_JUDGE 
    	freopen("input.txt", "r", stdin); 
    	freopen("output.txt", "w", stdout); 
    	freopen("error.txt", "w", stderr); 
   #endif*/
   ll TT=1;
   //cin>>TT;
   while(TT--)
   {    
       ll a,b;
     cin>>a>>b;
     cout<<a*b<<"\n;
   }
}

Compiler output:
a.cc:51:17: warning: missing terminating " character
   51 |      cout<<a*b<<"\n;
      |                 ^
a.cc:51:17: error: missing terminating " character
   51 |      cout<<a*b<<"\n;
      |                 ^~~~
a.cc: In function 'int main()':
a.cc:52:4: error: expected primary-expression before '}' token
   52 |    }
      |    ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  cin >> A >> B;
  cout << A*B <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:10: error: 'A' was not declared in this scope
    5 |   cin >> A >> B;
      |          ^
a.cc:5:15: error: 'B' was not declared in this scope
    5 |   cin >> A >> B;
      |               ^
Language: C++

#inclue<iostream>
using namespace std;
int main()
{
  int a,b;
  cin>>a>>b;
  cout<<a*b;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inclue; did you mean #include?
    1 | #inclue<iostream>
      |  ^~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin>>a>>b;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #inclue<iostream>
a.cc:7:3: error: 'cout' was not declared in this scope
    7 |   cout<<a*b;
      |   ^~~~
a.cc:7:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: Java

//package MyJavaProject;
 
import java.util.*;
import java.io.BufferedReader;
import java.io.IOException; 
import java.io.InputStreamReader;
import java.lang.Math;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;
import java.io.*;
import java.math.BigInteger; 
import java.io.PrintWriter;  

public class Test 
{
	static class FastReader 

	    { 
	        BufferedReader br; 
	        StringTokenizer st; 
	  
	        public FastReader() 
	        { 
	            br = new BufferedReader(new
	                     InputStreamReader(System.in)); 
	        } 
	  
	        String next() 
	        { 
	            while (st == null || !st.hasMoreElements()) 
	            { 
	                try
	                { 
	                    st = new StringTokenizer(br.readLine()); 
	                } 
	                catch (IOException  e) 
	                { 
	                    e.printStackTrace(); 
	                } 
	            } 
	            return st.nextToken(); 
	        } 
	  
	        int nextInt() 
	        { 
	            return Integer.parseInt(next()); 
	        } 
	  
	        long nextLong() 
	        { 
	            return Long.parseLong(next()); 
	        } 
	  
	        double nextDouble() 
	        { 
	            return Double.parseDouble(next()); 
	        } 
	  
	        String nextLine() 
	        { 
	            String str = ""; 
	            try
	            { 
	                str = br.readLine(); 
	            } 
	            catch (IOException e) 
	            { 
	                e.printStackTrace(); 
	            } 
	            return str; 
	        } 
	    }
	
	
	static void print(String s)
	{
		System.out.print(s);
	}
	static void print(boolean s)
	{
		System.out.print(s);
	}
	
	public static void main(String argsp[]) throws Exception
	{
		FastReader f=new FastReader();
		BufferedWriter w=new BufferedWriter(new OutputStreamWriter(System.out));
		 
		int t;
		//Test ob=new Test();
		t=f.nextInt();
		while(t--!=0)
		{
			long a,b;
			a=f.nextLong();
			b=f.nextLong();
			System.out.println(a*b);
			
		}
	}
}
	

	
	
	
	
	
	
	
	
	
	

Compiler output:
Main.java:14: error: class Test is public, should be declared in a file named Test.java
public class Test 
       ^
1 error
Language: C++

#include <iostream>



int main() {
	int a, b;
	std::cin >> a >> b;

	std::cou << a*b << std::endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: 'cou' is not a member of 'std'; did you mean 'cout'?
    9 |         std::cou << a*b << std::endl;
      |              ^~~
      |              cout
Language: C++

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

#define int     long long int
#define pii     pair<int, int>
#define vi      vector<int>
#define vii     vector<pair<int, int>>
#define pb      push_back
#define all(a)  (a).begin(),(a).end()
#define f       first
#define s       second
#define endl    '\n'
#define mod     1000000007    		

void solve()
{
	cin >> a >> b ;
	cout << a * b << endl ;
}

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

    int t = 1 ;
    //cin >> t ;
    while(t--)
    {
        solve() ;
    }
    return 0 ;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:17:16: error: 'a' was not declared in this scope
   17 |         cin >> a >> b ;
      |                ^
a.cc:17:21: error: 'b' was not declared in this scope
   17 |         cin >> a >> b ;
      |                     ^
Language: Java

import java.util.*;
import java.util.function.*;
import java.math.*;
public class Main {
    public static void main(String[] args){
		Scanner s = new Scanner(System.in);
		int A = s.nextInt();
		int B = s.nextInt();
		
		System.out.println(A*B);
	}
    }
}

Compiler output:
Main.java:13: error: class, interface, enum, or record expected
}
^
1 error
Language: C++

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

int main(){
  int a,b;
  cin>>a>>b;
  coiut<<a*b<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'coiut' was not declared in this scope
    7 |   coiut<<a*b<<endl;
      |   ^~~~~
Language: C

#include <iostream>
#include <cstdint>
#include <cmath>
#include <string>
#include <vector>
#include <map>
#include <algorithm>

int main(void)
{
    int64_t A, B;

    std::cin >> A >> B;

    std::cout << (A*B) << std::endl;

    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;
//typedef
typedef long long ll;
typedef vector<int> vi;
typedef vector<string> vs;
//define
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,n)  FOR(i,0,n)

int main(){
    int a,b;
    cin >> a >> b ;
    cout << a*b << endl;


 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() {
  	int a, b;
	cin << A << B;
	cout << A*B;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: 'A' was not declared in this scope
    6 |         cin << A << B;
      |                ^
a.cc:6:21: error: 'B' was not declared in this scope
    6 |         cin << A << B;
      |                     ^
Language: C++

#include<iostream>
#include<stdio.h>
#include<algorithm>
#include<math.h>
#include<bits/stdc++.h>
#include<stack>
#include<queue>
#include<list>
#include<vector>
#include<bitset>
#include<unordered_map> 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
// #include "boost/algorithm/string.hpp"
#define fio ios_base::sync_with_stdio(false)
#define mod 998244353
#define mod1 mod
#define mod2 1000000007
#define li long long int
#define ll long long int
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define readi(x) scanf("%d",&x)
#define  reads(x)  scanf("%s", x)
#define readl(x) scanf("%I64d",&x)
#define rep(i,n) for(i=0;i<n;i++)
#define revp(i,n) for(i=(n-1);i>=0;i--)
#define myrep1(i,a,b) for(i=a;i<=b;i++)
#define myrep2(i,a,b) for(i=b;i>=a;i--)
#define pb push_back
#define mp make_pair
#define fi first
#define sec second
#define MAXN 1000000000010000005
#define MINN -1000000000000000000
#define INTMAX 1000001000
#define pii pair<ll,ll> 
#define pdd pair<double,double>
#define pic pair<int,char>
#define N 500005
#define lgn 20
#define ddouble long double
#define minus minu
#define PI 2*acos(0)
#define lgn 20
 
 
// #define INTMAX 200000000 
 
// using namespace boost;
// #define si short int
 
using namespace std;
using namespace __gnu_pbds;             
typedef priority_queue<pii, vector<pii > > max_pq;
typedef priority_queue<pii, vector<pii> , greater<pii>  > min_pq;
ll toint(const string &s) {stringstream ss; ss << s; ll x; ss >> x; return x;}
string tostring ( ll number ){stringstream ss; ss<< number; return ss.str();}
 
// using namespace __gnu_pbds;         
// typedef priority_queue<pair<ll,char> , vector<pair<ll , char> > > max_pq;
// typedef priority_queue<pii , vector<pii > ,greater<pii > > min_pq;
typedef tree<pair<string,string> , null_type, less<pair<string,string> >, rb_tree_tag, tree_order_statistics_node_update> OST;
// typedef priority_queue<pair < ll , pair < pii , ll > >  , vector<pair < ll , pair < pii , ll > >  > ,greater<pair < ll , pair < pii , ll > >  > > min_pq;
#define TRACE
#ifdef TRACE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
    template <typename Arg1>
    void __f(const char* name, Arg1&& arg1){
        cout << name << " : " << arg1 << std::endl;
        //use cerr if u want to display at the bottom
    }
    template <typename Arg1, typename... Args>
    void __f(const char* names, Arg1&& arg1, Args&&... args){
        const char* comma = strchr(names + 1, ','); cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...);
    }
#else
#define trace(...)
#endif
#define nn 2000005
ll n;
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    ll a,b;
	cin >> a >> >b;
	cout << a*b;
        
}

Compiler output:
a.cc: In function 'int main()':
a.cc:88:21: error: expected primary-expression before '>' token
   88 |         cin >> a >> >b;
      |                     ^
Language: C

#include <bits/stdc++.h>

#define ll long long

using namespace std;

const int MAXN = 100010;
const int MAXM = 100010;
const int MAXINT = 2147483647;
const int INF = 0x3f3f3f3f;
const int mod = 1e9 + 7;

int n, m, k;
int ans, tot, cnt;

int a[MAXN];
int head[MAXN];

string s;

inline int read() {
	int s = 0, f = 1;
	char ch = getchar();
	while ('0' > ch || ch > '9') {if (ch == '-') f = -1; ch = getchar();}
	while ('0' <= ch && ch <= '9') {s = (s << 3) + (s << 1) + ch - 48; ch = getchar();}
	return s * f;
}

struct edge {
	int to, next;
}e[MAXN << 1];

void add_edge(int x, int y) {
	e[++tot].to = y;
	e[tot].next = head[x];
	head[x] = tot;
	return;
}

int main(){
	int T;
	scanf("%d%d", &n, &m);
	printf("%d\n", n * m); 
	return 0;
}

/*

*/

//Flakire
//Lord Wang
//yxm9
//akdxl
//WYXak
//MifafaOvO
//AKarry5037
//deakX
//xyx
//Fraggay



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;
typedef long long ll;
typedef double db;

void fastInputOutput(){ios_base::sync_with_stdio(false);cin.tie(NULL);}

ll GCD(ll a, ll b){ll gcd, g;g = __gcd(a, b);return g;}
ll gcd(ll a, ll b){if(b == 0){return a;}else{return gcd(b, a%b);}}
ll extended_gcd(ll a, ll b, ll *x, ll *y){if(a == 0){*x = 0;*y = 1;return b;}ll x1, y1;ll d = extended_gcd(b%a, a, &x1, &y1);*x = y1-(b/a)*x1;*y = x1;return d;}
ll LCM(ll a, ll b){ll gcd, g;g = __gcd(a, b);return (a/g)*b;}
ll PowFun(ll base, ll power){ll ans = 1;for(int i = 1; i <= power; i++){ans *= base;}return ans;}
/*This is better power function here used binary exponentiation*/
ll MadeFun(ll b, ll p){if(p == 0){return 1;}else if(p%2 == 0){return MadeFun(b*b, p/2);}else{return b*MadeFun(b*b, (p-1)/2);}}


const ll INF_LONG = 1LL<<61;
const unsigned int inf_int = 1<<31;
const ll mod = 1e9+7;
double phi = acos(-1);
void Solve()
{
    ll a, b; cin >> a >> b;
    ll a = a*b;
    cout << a << endl;
}
int main()
{
    fastInputOutput();
    Solve();
    return 0;
}


Compiler output:
a.cc: In function 'void Solve()':
a.cc:24:8: error: redeclaration of 'll a'
   24 |     ll a = a*b;
      |        ^
a.cc:23:8: note: 'll a' previously declared here
   23 |     ll a, b; cin >> a >> b;
      |        ^
Language: C++

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

int main(){

    string s, t;
    cin >> s >> t;
    cout << s * t << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:15: error: no match for 'operator*' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   11 |     cout << s * t << endl;
      |             ~ ^ ~
      |             |   |
      |             |   basic_string<[...]>
      |             basic_string<[...]>
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
#define all(x) (x).begin(),(x).end()
#define cyes cout<<"YES"<<endl
#define cno cout<<"NO"<<endl
#define sp <<" "<<
#define cst(x) cout<<fixed<<setprecision(x)
#define pi 3.14159265359
#define mod 1000000007
using namespace std;
using ll = long long;
using ld = long double;
using vi = vector<int>;
using vl = vector<ll>;
using Graphi = vector<vi>;
using Graphe = vector<vector<edge> >;
using que_a = priority_queue<int, vector<int>, greater<int> >;
using que_d = priority_queue<int>;
using pint = pair<int,int>;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
struct edge {
    int to; 
    int weight;
    edge(int t, int w) : to(t),weight(w) {}
};

int main(){

    int a,b; cin >> a >> b;
    cout << a*b << endl;

    return 0;

}

Compiler output:
a.cc:16:30: error: 'edge' was not declared in this scope
   16 | using Graphe = vector<vector<edge> >;
      |                              ^~~~
a.cc:16:34: error: template argument 1 is invalid
   16 | using Graphe = vector<vector<edge> >;
      |                                  ^
a.cc:16:34: error: template argument 2 is invalid
a.cc:16:36: error: template argument 1 is invalid
   16 | using Graphe = vector<vector<edge> >;
      |                                    ^
a.cc:16:36: error: template argument 2 is invalid
Language: C++

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

#define mod 1000000007
#define ll long long
#define ld long double
typedef vector< int > vi;
typedef vector< vi > vvi;
typedef pair< int,int > ii;
#define pb push_back
#define mp make_pair
#define endl '\n'
#define pii pair<int,int>
#define min3(a,b,c) min(a,min(b,c))
#define max3(a,b,c) max(a,max(b,c))
#define all(x) x.begin(),x.end()
#define sp(x) setprecision(x)
#define F first
#define S second
#define lb lower_bound
#define ub upper_bound
#define bs binary_search
#define tr(container, it) for(typeof(container.begin()) it = container.begin(); it != container.end(); it++)
#define present(container, element) (container.find(element) != container.end())
#define cpresent(container, element) (find(all(container),element) != container.end())
#define deb(x) cout<<#x <<x <<endl
#define rep(i, n) for (long long i = 0; i < (long long)(n); i++)

int main()
{
	#ifndef ONLINE_JUDGE
	freopen("input1.txt","r",stdin);
	freopen("output1.txt","w",stdout);
	#endif
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    int a,b;
  cin>>a>>b;
  cout<<a*b<<endl;
    	

    }	
}

Compiler output:
a.cc:43:1: error: expected declaration before '}' token
   43 | }
      | ^
Language: C++

#include,bits/stdc++.h>
using namespace std;
int main()
{
    int a,b;
    cin>>a>>b;
    cout<<a*b<<endl;
}

Compiler output:
a.cc:1:9: error: #include expects "FILENAME" or <FILENAME>
    1 | #include,bits/stdc++.h>
      |         ^
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin>>a>>b;
      |     ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #include,bits/stdc++.h>
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout<<a*b<<endl;
      |     ^~~~
a.cc:7:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:16: error: 'endl' was not declared in this scope
    7 |     cout<<a*b<<endl;
      |                ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #include,bits/stdc++.h>
Language: C++

#include <stdc++.h>
#include <string>
using namespace std;
#define EXCEPTERROR cout << "-1" << endl;
#define rep(k,nu)    for(int i=k; i<nu;  i++)
#define rep2(k,n)   for(int j=k; j<n;  j++)
#define size_a(array) sizeof(array) / sizeof(array[0])
#define INF 1000000000000 //1e12
#define MOD 10000007 //1e9+7
#define ll long long
#define pb pop_back
template<typename T> inline void chMin(T* a, T* b) {if(*a>*b) *a=*b;}
template<typename T> inline void chMax(T* a, T* b) {if(*a<*b) *a=*b;}
template<typename T> inline int  divUp(T a, T b)   {return ((a+b-1)/b);}
const double PI = acos(-1);

int main(){
    int a, b;
    cout << a*b ;

    return 0;
}
/*

*/

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

#include<iostrem>
using namespace std;
#define int long long int
signed main(){
int a,b;
cin>>a>>b;
cout<<(a*b)<<endl;
return 0;
}

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

import java.util.Scanner;

public class AtCoderBeginnerContest169 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        System.out.println(A * B);
    }

}


Compiler output:
Main.java:3: error: class AtCoderBeginnerContest169 is public, should be declared in a file named AtCoderBeginnerContest169.java
public class AtCoderBeginnerContest169 {
       ^
1 error
Language: Java

import java.*
 
class Main {
  public static void main(String args[]) {
	Scanner scanner = new Scanner(System.in);
    int input1 = scanner.nextInt();
    int input2 = scanner.nextInt();
    int num1 =input1 * input2;
    System.out.println(num1);
  };
};

Compiler output:
Main.java:1: error: ';' expected
import java.*
             ^
1 error
Language: Java

import java.Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		System.out.println(a*b);
	}

}


Compiler output:
Main.java:1: error: ';' expected
import java.Main {
                ^
Main.java:3: error: unnamed classes are a preview feature and are disabled by default.
	public static void main(String[] args) {
	              ^
  (use --enable-preview to enable unnamed classes)
Main.java:11: error: class, interface, enum, or record expected
}
^
3 errors
Language: C++

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

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t = 1; 
    for(int T = 0; T < t ; T++){
       cin >> a >> b;
       std::cout << a*b << std::endl;
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:15: error: 'a' was not declared in this scope
   11 |        cin >> a >> b;
      |               ^
a.cc:11:20: error: 'b' was not declared in this scope
   11 |        cin >> a >> b;
      |                    ^
Language: C++

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

int main( )
{
	cin >> a >> b;
    cout << a * b << '\n';
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: 'a' was not declared in this scope
    6 |         cin >> a >> b;
      |                ^
a.cc:6:21: error: 'b' was not declared in this scope
    6 |         cin >> a >> b;
      |                     ^
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()
{
    int a, b;
    cin >> a >> b;
    cout << a * b << endl;
    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;
using Graph = vector<vector<int>>;
using rep(s,t) = for (int s = 0; s < t; ++s);
using ll = long long;


int main() {
  int a,b;
  cin >> a >> b;

  cout << a * b << endl;
}

Compiler output:
a.cc:4:7: error: expected nested-name-specifier before 'rep'
    4 | using rep(s,t) = for (int s = 0; s < t; ++s);
      |       ^~~
a.cc:4:34: error: 's' does not name a type
    4 | using rep(s,t) = for (int s = 0; s < t; ++s);
      |                                  ^
a.cc:4:41: error: expected unqualified-id before '++' token
    4 | using rep(s,t) = for (int s = 0; s < t; ++s);
      |                                         ^~
Language: C++

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



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

    ll n,m;
	cin>>n>>m;
	ll a = n*m;
	cout<<a<<endl;

	

}
	return 0;
}


Compiler output:
a.cc:19:9: error: expected unqualified-id before 'return'
   19 |         return 0;
      |         ^~~~~~
a.cc:20:1: error: expected declaration before '}' token
   20 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long int
int main()
{
	ll t,a,b;
	cin>>a>>b;
	t=a*b;
	cout<<t;
	returm 0;
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'returm' was not declared in this scope
   10 |         returm 0;
      |         ^~~~~~
Language: C

#include<bits/stdc++.h>
#define rep(i,N) for(int i=0;i<(N);i++)
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
using namespace std;
const long long MOD = 1e9 + 7;
const long long INF = 1e12;
const int inf = 1e9;
const int mod = 1e9+7;
typedef long long ll;
typedef pair<ll,int> P;
typedef set<int> S;
int main(){
    cout << fixed << setprecision(10);
    int a,b;
    cin >> a >>b;
    cout << a * b << endl;
    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: C++

int main() 
{
    int A,B;
    cin >> A >> B;
    cout << A*B <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:5: error: 'cin' was not declared in this scope
    4 |     cin >> A >> B;
      |     ^~~
a.cc:5:5: error: 'cout' was not declared in this scope
    5 |     cout << A*B <<endl;
      |     ^~~~
a.cc:5:19: error: 'endl' was not declared in this scope
    5 |     cout << A*B <<endl;
      |                   ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  ll a,b;
  cin>>a>>b;
  cout<<a*b;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'll' was not declared in this scope
    4 |   ll a,b;
      |   ^~
a.cc:5:8: error: 'a' was not declared in this scope
    5 |   cin>>a>>b;
      |        ^
a.cc:5:11: error: 'b' was not declared in this scope
    5 |   cin>>a>>b;
      |           ^
Language: Java

#include <bits/stdc++.h>
#define ll long long int
#define ld long double
#define mod 1000000007
#define inp(arr,n) for(int i=0;i<n;i++) cin>>arr[i]
#define fr(i,a,b) for(int i=a;i<=b;i++)
using namespace std;
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    ll a,b;
    cin>>a>>b;
    cout<<a*b<<endl;
    return 0;
}

Compiler output:
Main.java:1: error: illegal character: '#'
#include <bits/stdc++.h>
^
Main.java:1: error: class, interface, enum, or record expected
#include <bits/stdc++.h>
         ^
Main.java:2: error: illegal character: '#'
#define ll long long int
^
Main.java:3: error: illegal character: '#'
#define ld long double
^
Main.java:4: error: illegal character: '#'
#define mod 1000000007
^
Main.java:5: error: illegal character: '#'
#define inp(arr,n) for(int i=0;i<n;i++) cin>>arr[i]
^
Main.java:5: error: class, interface, enum, or record expected
#define inp(arr,n) for(int i=0;i<n;i++) cin>>arr[i]
                               ^
Main.java:5: error: class, interface, enum, or record expected
#define inp(arr,n) for(int i=0;i<n;i++) cin>>arr[i]
                                   ^
Main.java:6: error: illegal character: '#'
#define fr(i,a,b) for(int i=a;i<=b;i++)
^
Main.java:6: error: class, interface, enum, or record expected
#define fr(i,a,b) for(int i=a;i<=b;i++)
                              ^
Main.java:6: error: class, interface, enum, or record expected
#define fr(i,a,b) for(int i=a;i<=b;i++)
                                   ^
Main.java:9: error: not a statement
    ios_base::sync_with_stdio(false);
    ^
Main.java:12: error: not a statement
    cin>>a>>b;
          ^
Main.java:13: error: not a statement
    cout<<a*b<<endl;
             ^
Main.java:8: error: unnamed classes are a preview feature and are disabled by default.
int main(){
^
  (use --enable-preview to enable unnamed classes)
Main.java:9: error: ';' expected
    ios_base::sync_with_stdio(false);
                             ^
16 errors
Language: C++

#include <bits/stdc++.h>

using namespace std;
int main()
{
    int n,m;
    cin >> n >> m;
    
    cout << a*b;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: 'a' was not declared in this scope
    9 |     cout << a*b;
      |             ^
a.cc:9:15: error: 'b' was not declared in this scope
    9 |     cout << a*b;
      |               ^
Language: C++

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

vector<vector<int> > subset(vector<int> v, int index, int k)
{   
	// cout<<"index is "<<index<<"\n";
    if(v.empty() || index>=v.size() || index<0 || k>v.size() )
    {
        vector<vector<int> > result;
        return result;
    }
  //  else if(k==0){
  //  	vector<vector<int> > result;
  //  	vector<int> vec, emptyVec;
		// vec.push_back(v[index]);
		// result.push_back(vec);
		// return result;
  //  }
    else if(index==v.size()-1 || k==0){
    	vector<vector<int> > result;
    	vector<int> vec;
    	// cout<<"index==arr.size "<<"\n";
		vec.push_back(v[index]);
    	result.push_back(vec);
    	return result;
    }
    vector<vector<int> > r1, r2 ;
    cout<<"calling the function again \n";
	r1= subset(v, index+1, k);
	cout<<"r1.size() "<<r1.size()<<"\n";
	// cout<<r1[0][0]<<"\n";
	cout<<"size of k "<<k<<"\n";
	cout<<"index is "<<index<<"\n";
	cout<<"vector size of r1 "<<r1.size()<<"\n";
	for(int i=0;i<r1.size();i++)
	{
		vector<int> vec;
	  	vec.push_back(v[index]);
	  	if(!r1[i].empty()){
	  		// cout<<"size of k "<<k<<"\n";
	  		for(int j=0;j<r1[i].size() && vec.size()<k ;j++){
				cout<<"vector size inside r1 "<<r1[i].size()<<"\n";
				// vec.push_back(v[index]);
				vec.push_back(r1[i][j]);
				// cout<<"r[i][j] "<<r1[i][j]<<"\n";
		  	}
	  	}
	  	// vec=r1[i];
	  	// vec.push_back(v[index]);
	  	// if(k<vec.size()){
	  	
	}
	r2= subset(v, index+1, k-1);
	return r2;
}

int main(){
    int a,b;
  cin>>a>>b;
  cout<<a*b<<endl;
    }
    return 0;
}



Compiler output:
a.cc:64:5: error: expected unqualified-id before 'return'
   64 |     return 0;
      |     ^~~~~~
a.cc:65:1: error: expected declaration before '}' token
   65 | }
      | ^
Language: C++

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

int main() {
	int a,int b;
	cin>>a>>b;
	cout<<(a*b)<<"\n";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:15: error: expected unqualified-id before 'int'
    5 |         int a,int b;
      |               ^~~
a.cc:6:17: error: 'b' was not declared in this scope
    6 |         cin>>a>>b;
      |                 ^
Language: C

#include<bits/stdc++.h>
using namespace std;
int main(){
int a,b;
cin>>a>>b;
cout<<a*b<<endl;
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: C++

#include<bits/stdc++.h>
#define ll long long
#define dl double
#define mp make_pair
#define pb push_back
using namespace std;

//***********************************************************************

// hash struct for unordered_map
struct hash_pair { 
    template <class T1, class T2> 
    size_t operator()(const pair<T1, T2>& p) const
    { 
        auto hash1 = hash<T1>{}(p.first); 
        auto hash2 = hash<T2>{}(p.second); 
        return hash1 ^ hash2; 
    } 
};

int MAXNUM = 5e3+5;
vector <int>vis(MAXNUM);
vector<int> pr;
void sieve() {
	pr.push_back(2);
	for(ll i=3;i<MAXNUM;i+=2) if(!vis[i]) {
		pr.push_back(i);
		for(ll j=i*i;j<MAXNUM;j+=2*i) vis[j]=true;
	}
}
//************************************************************************

void solve()
{
    int a,b;
    cin a >> b;
    cout << a*b << endl;
}


int main()
{ 
	ios_base::sync_with_stdio(false); 
    cin.tie(NULL);
	ll t;
	//cin >> t;
	t=1;
	while(t--)
	{
		solve();
	}

	return 0;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:36:8: error: expected ';' before 'a'
   36 |     cin a >> b;
      |        ^~
      |        ;
Language: C++

#include <iostream>
using namespace std;

int main(int argc, char *argv[]) {
    int a,b;
    cin >> a >> b;
    else cout << a*b << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:7:5: error: 'else' without a previous 'if'
    7 |     else cout << a*b << endl;
      |     ^~~~
Language: Java

import java.util.Scanner;

public class A {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		System.out.println(a * b);
	}
}


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

#include<bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
#define fi first
#define se second
#define pb push_back
#define mp make_pair 
#define rep(i,n) for(int i = 0; i < (n); i++)
#define debug(x) cout << '>' << #x << ':' << x << endl;
#define sq(a) (a)*(a)
#define nl "\n"
#define all(x) (x).begin(),(x).end()
using namespace std;
//using namespace __gnu_pbds;
//typedef tree<int,null_type,less<int>,rb_tree_tag,
//tree_order_statistics_node_update> indexed_set;

#ifdef LOCAL
	#define eprintf(...) fprintf(stderr, __VA_ARGS__);fflush(stderr);
#else
	#define eprintf(...) 42
#endif

using ll = long long;
using ld = long double;
using uint = unsigned int;
using ull = unsigned long long;
template<typename T>
using pair2 = pair<T, T>;
using pii = pair<int, int>;
using vi = vector<int>
using vll = vector<ll>
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
	return (ull)rng() % B;
}


clock_t startTime;
double getCurrentTime() {
	return (double)(clock() - startTime) / CLOCKS_PER_SEC;
}
const int N = 100100;
ll mod=1000000007;

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	startTime = clock();
	ll a,b;
	cin>>a>>b;
	cout<<(a*b)<<nl;
	return 0;
}



Compiler output:
a.cc:30:23: error: expected ';' before 'using'
   30 | using vi = vector<int>
      |                       ^
      |                       ;
   31 | using vll = vector<ll>
      | ~~~~~
Language: C++

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

int main(){
    cin >> a >> b;
    cout << a*b << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:12: error: 'a' was not declared in this scope
    5 |     cin >> a >> b;
      |            ^
a.cc:5:17: error: 'b' was not declared in this scope
    5 |     cin >> a >> b;
      |                 ^
Language: Java

import java.util.*;

class Main{
	static public void main(String args[]){
		Scanner sc=new Scanner(System.in);
		
		int a=sc.nextInt();
		int b=sc.nextint();
		System.out.println(a*b);
	}
}

Compiler output:
Main.java:8: error: cannot find symbol
		int b=sc.nextint();
		        ^
  symbol:   method nextint()
  location: variable sc of type Scanner
1 error
Language: Java

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

public class A
{
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        
        int n = sc.nextInt();
        int m = sc.nextInt();
        System.out.println(n * m);
    }
}


Compiler output:
Main.java:5: error: class A is public, should be declared in a file named A.java
public class A
       ^
1 error
Language: C

#include <bits/stdc++.h>
#define PI 3.1415926535897
using namespace std;
typedef long long ll;
const int INF = 1000000000;
const ll LINF = 1000000000000000000; //1e18
const double EPS = 1e-10;

int main(void)
{
    int a, b;
    cin >> a >> b;
    cout << a * b << endl;
    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>

int main(void){
    
    int a,b;
    scanf("%d %d",&a,&b);
    printf("%d",a*b)

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:21: error: expected ';' before 'return'
    7 |     printf("%d",a*b)
      |                     ^
      |                     ;
    8 | 
    9 |     return 0;
      |     ~~~~~~