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

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



// Inserted snippets: euclid, io, modint, opt, root
#pragma gcc optimize("Ofast")
#pragma gcc target("avx2")
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
template<typename H> bool chmin(H& v1, const H v2) { if (v1 > v2) { v1 = v2; return true; } return false; }
template<typename H> bool chmax(H& v1, const H v2) { if (v1 < v2) { v1 = v2; return true; } return false; }
template<typename H> void read(H& head) { cin >> head; }
template<typename H, typename ...T> void read(H& head, T& ...tail) { cin >> head; read(tail...); }
template<typename H> void write(H head) { cout << head << '\n'; }
template<typename H, typename ...T> void write(H head, T ...tail) { cout << head << " "; write(tail...); }
template<typename ...T> void die(T ...tok) { write(tok...); exit(0); }
ll euclid(ll a, ll b, ll &x, ll &y) {
	if (b) { ll d = euclid(b, a % b, y, x);
		return y -= a/b * x, d; }
	return x = 1, y = 0, a;
}
template<int MOD>
struct Mod {
	ll x;
	Mod(ll xx) : x(xx) {}
	Mod operator+(Mod b) { return Mod((x + b.x) % MOD); }
	Mod operator-(Mod b) { return Mod((x - b.x + MOD) % MOD); }
	Mod operator*(Mod b) { return Mod((x * b.x) % MOD); }
	Mod operator/(Mod b) { return *this * invert(b); }
	Mod invert(Mod a) {
		ll x, y, g = euclid(a.x, MOD, x, y);
		assert(g == 1); return Mod((x + MOD) % MOD);
	}
	Mod operator^(ll e) {
		if (!e) return Mod(1);
		Mod r = *this ^ (e / 2); r = r * r;
		return e&1 ? *this * r : r;
	}
};
// End snippets

typedef Mod<100> modint;

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);

	modint a, b;
	read(a.x, b.x);
	die((a * b).x);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:53:16: error: no matching function for call to 'Mod<100>::Mod()'
   53 |         modint a, b;
      |                ^
a.cc:30:9: note: candidate: 'Mod<MOD>::Mod(ll) [with int MOD = 100; ll = long long int]'
   30 |         Mod(ll xx) : x(xx) {}
      |         ^~~
a.cc:30:9: note:   candidate expects 1 argument, 0 provided
a.cc:28:8: note: candidate: 'constexpr Mod<100>::Mod(const Mod<100>&)'
   28 | struct Mod {
      |        ^~~
a.cc:28:8: note:   candidate expects 1 argument, 0 provided
a.cc:28:8: note: candidate: 'constexpr Mod<100>::Mod(Mod<100>&&)'
a.cc:28:8: note:   candidate expects 1 argument, 0 provided
a.cc:53:19: error: no matching function for call to 'Mod<100>::Mod()'
   53 |         modint a, b;
      |                   ^
a.cc:30:9: note: candidate: 'Mod<MOD>::Mod(ll) [with int MOD = 100; ll = long long int]'
   30 |         Mod(ll xx) : x(xx) {}
      |         ^~~
a.cc:30:9: note:   candidate expects 1 argument, 0 provided
a.cc:28:8: note: candidate: 'constexpr Mod<100>::Mod(const Mod<100>&)'
   28 | struct Mod {
      |        ^~~
a.cc:28:8: note:   candidate expects 1 argument, 0 provided
a.cc:28:8: note: candidate: 'constexpr Mod<100>::Mod(Mod<100>&&)'
a.cc:28:8: note:   candidate expects 1 argument, 0 provided
Language: C++

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



// Inserted snippets: io, opt, root
#pragma gcc optimize("Ofast")
#pragma gcc target("avx2")
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
template<typename H> bool chmin(H& v1, const H v2) { if (v1 > v2) { v1 = v2; return true; } return false; }
template<typename H> bool chmax(H& v1, const H v2) { if (v1 < v2) { v1 = v2; return true; } return false; }
template<typename H> void read(H& head) { cin >> head; }
template<typename H, typename ...T> void read(H& head, T& ...tail) { cin >> head; read(tail...); }
template<typename H> void write(H head) { cout << head << '\n'; }
template<typename H, typename ...T> void write(H head, T ...tail) { cout << head << " "; write(tail...); }
template<typename ...T> void die(T ...tok) { write(tok...); exit(0); }
// End snippets

typedef Mod<100> modint;

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);

	modint a, b;
	read(a.x, b.x);
	die((a * b).x);
}


Compiler output:
a.cc:24:9: error: 'Mod' does not name a type
   24 | typedef Mod<100> modint;
      |         ^~~
a.cc: In function 'int main()':
a.cc:30:9: error: 'modint' was not declared in this scope; did you mean 'mode_t'?
   30 |         modint a, b;
      |         ^~~~~~
      |         mode_t
a.cc:31:14: error: 'a' was not declared in this scope
   31 |         read(a.x, b.x);
      |              ^
a.cc:31:19: error: 'b' was not declared in this scope
   31 |         read(a.x, b.x);
      |                   ^
Language: C++

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

Compiler output:
a.cc:1:25: warning: extra tokens at end of #include directive
    1 | #include<bits/stdc++.h> int main(){ int a, b; std::cin >>a >>b; std::cout << a*b << std::endl; }
      |                         ^~~
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

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

Compiler output:
a.cc:1:25: warning: extra tokens at end of #include directive
    1 | #include<bits.stdc++.h> int main(){ int a, b; std::cin >>a >>b; std::cout << a*b << std::endl; }
      |                         ^~~
a.cc:1:9: fatal error: bits.stdc++.h: No such file or directory
    1 | #include<bits.stdc++.h> int main(){ int a, b; std::cin >>a >>b; std::cout << a*b << std::endl; }
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

        #include <iostream>
        int main(){
        int z,x;
        cin>>z>>x;
        cout<<z*x<<"/n";
          return 0;
        }

Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |         cin>>z>>x;
      |         ^~~
      |         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:5:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    5 |         cout<<z*x<<"/n";
      |         ^~~~
      |         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 <iostream>
    int main{
    int z,x;
    cin>>z>>x;
    cout<<z*x<<"/n";
      return 0;
    }

Compiler output:
a.cc:2:9: error: cannot declare '::main' to be a global variable
    2 |     int main{
      |         ^~~~
a.cc:3:5: error: expected primary-expression before 'int'
    3 |     int z,x;
      |     ^~~
a.cc:3:5: error: expected '}' before 'int'
a.cc:2:13: note: to match this '{'
    2 |     int main{
      |             ^
a.cc:4:5: error: 'cin' does not name a type
    4 |     cin>>z>>x;
      |     ^~~
a.cc:5:5: error: 'cout' does not name a type
    5 |     cout<<z*x<<"/n";
      |     ^~~~
a.cc:6:7: error: expected unqualified-id before 'return'
    6 |       return 0;
      |       ^~~~~~
a.cc:7:5: error: expected declaration before '}' token
    7 |     }
      |     ^
Language: C++

#include <iostream>
int main{
int z,x;
cin>>z>>x;
cout<<z*x<<"/n";
}

Compiler output:
a.cc:2:5: error: cannot declare '::main' to be a global variable
    2 | int main{
      |     ^~~~
a.cc:3:1: error: expected primary-expression before 'int'
    3 | int z,x;
      | ^~~
a.cc:3:1: error: expected '}' before 'int'
a.cc:2:9: note: to match this '{'
    2 | int main{
      |         ^
a.cc:4:1: error: 'cin' does not name a type
    4 | cin>>z>>x;
      | ^~~
a.cc:5:1: error: 'cout' does not name a type
    5 | cout<<z*x<<"/n";
      | ^~~~
a.cc:6:1: error: expected declaration before '}' token
    6 | }
      | ^
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++

#include<bits/stdc++.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:9:15: error: expected '}' at end of input
    9 |   cout << a*b;
      |               ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
#include<math.h>

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: 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:7:3: 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:7:14: 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 int long long 
int32_ t  main()
{
 int n, m; cin>>n>>m; cout<<n*m;
}

Compiler output:
a.cc:4:1: error: 'int32_' does not name a type; did you mean 'int32_t'?
    4 | int32_ t  main()
      | ^~~~~~
      | int32_t
Language: C++

#include<bits/stdc++.h>
 using  namespace  std; 
#define int long long 
int32_ t  main()
{
 int n, m; cin>>n>>m; cout<<n*m;

Compiler output:
a.cc:4:1: error: 'int32_' does not name a type; did you mean 'int32_t'?
    4 | int32_ t  main()
      | ^~~~~~
      | int32_t
Language: C++

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

using namespace std;
using Graph = vector<vector<int>>;

#define REP(i,n) for(ll i=0;i<(ll)(n);i++)
#define REPD(i,n) for(ll i=n-1;i>=0;i--)
#define FOR(i,a,b) for(ll i=a;i<=(ll)(b);i++)
#define FORD(i,a,b) for(ll i=a;i>=(ll)(b);i--)

int N, M;

void Main()
{
    cin >> N >> M; 
    cout << N *　M;
}
 
int main()
{
	cin.tie(0);
	ios_base::sync_with_stdio(false);
	cout << fixed << setprecision(15);
	Main();
}

Compiler output:
a.cc:18:16: error: extended character 　 is not valid in an identifier
   18 |     cout << N *　M;
      |                ^
a.cc: In function 'void Main()':
a.cc:18:16: error: '\U00003000M' was not declared in this scope
   18 |     cout << N *　M;
      |                ^~~
Language: C

#include <stdio.h>
long long a [100010];
int main (){
int n;
scanf("%d",&n);
for(int i=0;i<n;i++) scanf("%lld",&a[i]);
int zero =0;
9
for(int i=0;i<n;i++)if(a[i]==0) zero ++;
if(zero >0){
// a[i] contains 0
printf("0\n");
return 0;
}
long long prod =1;
for(int i=0;i<n;i++){
if(a[i ] <=1000000000000000000/ prod ){
// This condition is equivalent to prod*a[i] <=10ˆ18
prod *=a[i];
}else{
printf("-1\n");
return 0;
}
}
printf("%lld\n",prod );
}


Compiler output:
main.c: In function 'main':
main.c:8:2: error: expected ';' before 'for'
    8 | 9
      |  ^
      |  ;
    9 | for(int i=0;i<n;i++)if(a[i]==0) zero ++;
      | ~~~
Language: C

#include<bits/stdc++.h>
#include <cmath>
#include <climits>

using namespace std;

typedef long long ll;
#define PI 3.14159265

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    ll n;
    cin >> n;
    ll prev = 1;
    ll c = 1;
    bool yap = false;
    for(ll i = 0; i < n; i++){
        ll a;
        cin >> a;
        prev = c;
        c *= a;
        if(prev > c && a != 0)yap = true;
    }
    if(yap){
        cout << -1 << endl;
        return 0;
    }
    ll comp = pow(10, 18);
    if(c > comp)
    {
        cout << -1 << endl;
        return 0;
    }
    else cout << c << 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++

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:4:3: error: 'scanf' was not declared in this scope
    4 |   scanf("%d %d", &a, &b);
      |   ^~~~~
a.cc:5:3: error: 'printf' was not declared in this scope
    5 |   printf("%d", a*b);
      |   ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | int main(void)
Language: C++

#include <iostream>

int main() {

	int a = 0, b = 0;
	cin >> a >> b;
	cout << a * b;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: 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:7:9: 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<iostream>
using std::cout;
usinng std::cin;
usinngstd::endl;

int solve(int a,int b){
  if(b==0)return a;
  int result = 1;
  while(b){
    if(b%2==0)
      result = result*a;
    
    a = a*a;
    b>>=1;
    
  }
  return result;
}

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

Compiler output:
a.cc:3:1: error: 'usinng' does not name a type
    3 | usinng std::cin;
      | ^~~~~~
a.cc:4:1: error: 'usinngstd' does not name a type
    4 | usinngstd::endl;
      | ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:22:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   22 |   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<bits/stdc++>
using namespace std;
int main()
{
  long long a,b;
  cin>>a>>b;
  cout<<a*b;
}


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

#include <stdio.h>
int main(void){
    int, a, b;
    scanf("%d%d", &a, &b);
    printf("%d", a * b);
    
}

Compiler output:
main.c: In function 'main':
main.c:3:8: error: expected identifier or '(' before ',' token
    3 |     int, a, b;
      |        ^
main.c:4:20: error: 'a' undeclared (first use in this function)
    4 |     scanf("%d%d", &a, &b);
      |                    ^
main.c:4:20: note: each undeclared identifier is reported only once for each function it appears in
main.c:4:24: error: 'b' undeclared (first use in this function)
    4 |     scanf("%d%d", &a, &b);
      |                        ^
Language: C++

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

int main() {
  int N;
  bool flag = false;
  long long input, value = 1;
  
  cin >> N;
  for(int i = 0; i < N; i++){
    cin >> input;
    
    if(inout <= 1000000000000000000/value){
      cout << -1 << endl;
      return 0;
    }

    value *= input;
  }
  
  if(flag == true)cout << -1 << endl;
  else cout << value << endl;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:8: error: 'inout' was not declared in this scope; did you mean 'input'?
   13 |     if(inout <= 1000000000000000000/value){
      |        ^~~~~
      |        input
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: In function 'int main()':
a.cc:7:18: error: expected ';' before '}' token
    7 |   cout<<a*b<<endl
      |                  ^
      |                  ;
    8 | }
      | ~
Language: C

#include <bits/stdc++.h>
#include <string>
#include <math.h>
using namespace std;
int main()
{
  int a=0,b=0,c=0,d=0,e=0,f=0,i=0,j=0;
  int sum=0,num=0,count=0,ans=0,min=0,max=0;
  double d1=0,d2=0,d3=0,d4=0,d5=0,d6=0;
  int a1[999999],a2[999999],a3[999999];
  string s1,s2,s3;
  
  cin>>a>>b;
  
  cout<<a*b<<endl;
}
  


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>
#include <iostream>
#include <stdio.h>
#include <math.h>
#include <errno.h>
#include <conio.h>
#include <time.h>
#include <assert.h>
using namespace std;
int main()
{
    long long unlambda;
    long long prolog;
    cin>>unlambda>>prolog;
    cout<<unlambda*prolog<<"\n";
    return 0;
}

Compiler output:
a.cc:6:10: fatal error: conio.h: No such file or directory
    6 | #include <conio.h>
      |          ^~~~~~~~~
compilation terminated.
Language: C++

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

#define ll long long
#define ar array
#define fo(i,n) for(i=0;i<n;i++)
#define fok(i,k,n) for(i=k;i<n;i++)

//const double PI=acos(-1); 
#define vint vector<int>
#define vfloat vector<float>

#define pb push_back

const long long mod=1e9;

#define PI 3.14159 
#define vint vector<int>
#define vfloat vector<float>

const int size=100000;
int a[size];

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

int main(int argc, char const *argv[])
{
	//cout<<"changed\n";
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	ll t=1;
	//cin>>t;

	while(t--)
	{	
		solve();

	}	
	return 0;	
}

Compiler output:
a.cc:22:7: error: reference to 'size' is ambiguous
   22 | int a[size];
      |       ^~~~
In file included from /usr/include/c++/14/string:53,
                 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/range_access.h:272:5: note: candidates are: 'template<class _Tp, long unsigned int _Nm> constexpr std::size_t std::size(const _Tp (&)[_Nm])'
  272 |     size(const _Tp (&)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:262:5: note:                 'template<class _Container> constexpr decltype (__cont.size()) std::size(const _Container&)'
  262 |     size(const _Container& __cont) noexcept(noexcept(__cont.size()))
      |     ^~~~
a.cc:21:11: note:                 'const int size'
   21 | const int size=100000;
      |           ^~~~
Language: C

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: expected primary-expression before '<<' token
    6 |     std::cout<<<<<A*B<<std::endl;
      |                ^~
a.cc:6:18: error: expected primary-expression before '<' token
    6 |     std::cout<<<<<A*B<<std::endl;
      |                  ^
a.cc:6:22: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    6 |     std::cout<<<<<A*B<<std::endl;
      |                   ~~~^~~~~~~~~~~
Language: C++

#include<iostream>

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

    int add=a+b+c+d;
    int sub=a-b-c-d;
    int time=a*b*c*d;
    int div=a
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:12:5: error: expected ',' or ';' before '}' token
   12 |     }
      |     ^
Language: C++

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

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

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:6:2: 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:7:3: 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:7:18: 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;

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

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

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



Compiler output:
main.c:2:10: fatal error: bits/stdc++.h: No such file or directory
    2 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
using namespace std;
int main(){
	int A,B,X;
    cin>>A>>B;
  	x=A*B;
	return x;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'x' was not declared in this scope
    6 |         x=A*B;
      |         ^
Language: Java

import java.util.*; 
public class main
{
public static void main(String args[]) 
{
Scanner sc = new Scanner(System.in); 
int a = sc.nextInt(); 
int b = sc.nextInt();  
System.out.print(a*b);  
}
}

Compiler output:
Main.java:2: error: class main is public, should be declared in a file named main.java
public class main
       ^
1 error
Language: Java

import java.util.*; 
public class Solution 
{
public static void main(String args[]) 
{
Scanner sc = new Scanner(System.in); 
long a = sc.nextInt(); 
long b = sc.nextInt(); 
System.out.prin(a*b);  
}
}

Compiler output:
Main.java:2: error: class Solution is public, should be declared in a file named Solution.java
public class Solution 
       ^
Main.java:9: error: cannot find symbol
System.out.prin(a*b);  
          ^
  symbol:   method prin(long)
  location: variable out of type PrintStream
2 errors
Language: C

#include(stdio.h)
int main (void){

	scanf("%s", &S);
	A = S[0];
	B = S[2];
	int(A);
	int(B);
      
	int ans = A * B;
	printf(ans);
    return 0;
}

Compiler output:
main.c:1:9: error: #include expects "FILENAME" or <FILENAME>
    1 | #include(stdio.h)
      |         ^
main.c: In function 'main':
main.c:4:9: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    4 |         scanf("%s", &S);
      |         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #include(stdio.h)
main.c:4:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    4 |         scanf("%s", &S);
      |         ^~~~~
main.c:4:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:4:22: error: 'S' undeclared (first use in this function)
    4 |         scanf("%s", &S);
      |                      ^
main.c:4:22: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:9: error: 'A' undeclared (first use in this function)
    5 |         A = S[0];
      |         ^
main.c:6:9: error: 'B' undeclared (first use in this function)
    6 |         B = S[2];
      |         ^
main.c:11:9: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   11 |         printf(ans);
      |         ^~~~~~
main.c:11:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:11:9: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:11:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:11:16: error: passing argument 1 of 'printf' makes pointer from integer without a cast [-Wint-conversion]
   11 |         printf(ans);
      |                ^~~
      |                |
      |                int
main.c:11:16: note: expected 'const char *' but argument is of type 'int'
Language: C++

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

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

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

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

Compiler output:
a.cc:2:16: error: expected identifier before ';' token
    2 | using namespace;
      |                ^
a.cc: In function 'int main()':
a.cc:5:13: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   int A, B; 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:6:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |   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:6:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    6 |   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;

int main() {
  int A, B;
  scanf(%d%d, A, B);
  printf(%d, A*B);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: expected primary-expression before '%' token
    6 |   scanf(%d%d, A, B);
      |         ^
a.cc:6:10: error: 'd' was not declared in this scope
    6 |   scanf(%d%d, A, B);
      |          ^
a.cc:7:10: error: expected primary-expression before '%' token
    7 |   printf(%d, A*B);
      |          ^
Language: C++

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

int main() {
  int A, B;
  scanf(%d%d, A, B);
  printf(%d, A*B);
}

Compiler output:
a.cc: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<<"\n;
}

Compiler output:
a.cc:7:14: warning: missing terminating " character
    7 |   cout<<a*b<<"\n;
      |              ^
a.cc:7:14: error: missing terminating " character
    7 |   cout<<a*b<<"\n;
      |              ^~~~
a.cc: In function 'int main()':
a.cc:8:1: error: expected primary-expression before '}' token
    8 | }
      | ^
Language: Java

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

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
static Scanner scanner = new Scanner(System.in);
       ^
  (use --enable-preview to enable unnamed classes)
1 error
Language: Java

public class Main {
    static Scanner scanner = new Scanner(System.in);
    public static void main(String[] args) {
	// write your code here
        int A = scanner.nextInt();
        int B = scanner.nextInt();
        System.out.println(A*B);
    }
}

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

#include <bits/stdc++.h>

using namespace std;
#define forr(i,b) for(int i=0;i<b;i++)
typedef long long ll;

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

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: expected initializer before 'cin'
    9 |   cin>>a>>b;
      |   ^~~
a.cc:10:11: error: 'b' was not declared in this scope
   10 |   cout<<a*b;
      |           ^
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <cmath>
#include <queue>
#include <map>
#include <unordered_map>
#include <set>
#include <functional>
#include <bitset>
#include <numeric>
#include <complex>
#include <iomanip>
#include <cassert>
#include <random>


template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

using namespace std;

int main(){
    int N;
  	cin>>N;
  	long long a[N];
    for(int i=0;i<N;i++)cin>>a[i];
    long long res=1;
    for(int i=0;i<N;i++){res*=a[i];if(res>=1000000000000000000){return -1};}
    cout<<res<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:74: error: expected ';' before '}' token
   30 |     for(int i=0;i<N;i++){res*=a[i];if(res>=1000000000000000000){return -1};}
      |                                                                          ^
      |                                                                          ;
Language: Java

package chap16;

import java.util.Scanner;

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

        while(true){
        System.out.print("a:");
        int a = scanner.nextInt();
        System.out.print("b:");
        int b = scanner.nextInt();

        if(1>a || a>100){
            System.out.println("aは1から100");
            continue;
        }

        if(1>b || b>100){
            System.out.println("bは1から100");
            continue;
        }

        break;

        }


        System.out.print(a*b);

        

        
    }

    
}

Compiler output:
Main.java:30: error: cannot find symbol
        System.out.print(a*b);
                         ^
  symbol:   variable a
  location: class Main
Main.java:30: error: cannot find symbol
        System.out.print(a*b);
                           ^
  symbol:   variable b
  location: class Main
2 errors
Language: C++

#include<bits/stdc++.h>
int main()
{ 
int a,b,m;
cin>>a>>b;
m=c*b;
cout<<m;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 | 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:6:3: error: 'c' was not declared in this scope
    6 | m=c*b;
      |   ^
a.cc:7:1: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 | cout<<m;
      | ^~~~
      | std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: Java

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main{
  public static void main(String[] args) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String[] s = reader.readLine().split(" ");
    int result = Integer.parseInt(s[0]) * Integer.parseInt(s[1]);
    System.out.println(result);
  }
}


Compiler output:
Main.java:5: error: cannot find symbol
  public static void main(String[] args) throws IOException {
                                                ^
  symbol:   class IOException
  location: class Main
1 error
Language: Java

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
  public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String[] s = reader.readLine().split(" ");
    int result = Integer.parseInt(s[0]) * Integer.parseInt(s[1]);
    System.out.println(result);
  }
}


Compiler output:
Main.java:7: error: unreported exception IOException; must be caught or declared to be thrown
    String[] s = reader.readLine().split(" ");
                                ^
1 error
Language: Java

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
  public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader());
    String[] s = reader.readLine().split(" ");
    int result = Integer.parseInt(s[0]) * Integer.parseInt(s[1]);
    System.out.println(result);
  }
}

Compiler output:
Main.java:6: error: no suitable constructor found for InputStreamReader(no arguments)
    BufferedReader reader = new BufferedReader(new InputStreamReader());
                                               ^
    constructor InputStreamReader.InputStreamReader(InputStream) is not applicable
      (actual and formal argument lists differ in length)
    constructor InputStreamReader.InputStreamReader(InputStream,String) is not applicable
      (actual and formal argument lists differ in length)
    constructor InputStreamReader.InputStreamReader(InputStream,Charset) is not applicable
      (actual and formal argument lists differ in length)
    constructor InputStreamReader.InputStreamReader(InputStream,CharsetDecoder) is not applicable
      (actual and formal argument lists differ in length)
1 error
Language: Java

import java.io.*;
public class Main {
  public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader());
    String[] s = reader.readLine().split(" ");
    int result = Integer.parseInt(s[0]) * Integer.parseInt(s[1]);
    System.out.println(result);
  }
}

Compiler output:
Main.java:4: error: no suitable constructor found for InputStreamReader(no arguments)
    BufferedReader reader = new BufferedReader(new InputStreamReader());
                                               ^
    constructor InputStreamReader.InputStreamReader(InputStream) is not applicable
      (actual and formal argument lists differ in length)
    constructor InputStreamReader.InputStreamReader(InputStream,String) is not applicable
      (actual and formal argument lists differ in length)
    constructor InputStreamReader.InputStreamReader(InputStream,Charset) is not applicable
      (actual and formal argument lists differ in length)
    constructor InputStreamReader.InputStreamReader(InputStream,CharsetDecoder) is not applicable
      (actual and formal argument lists differ in length)
1 error
Language: C++

#include <stdio.h>
#include <math.h>
#include <vector>
#include <algorithm>

using namespace std;

int main(){
    int a,b
    scanf("%d %d", a, b);
    printf("%d", a * b);
    
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: expected initializer before 'scanf'
   10 |     scanf("%d %d", a, b);
      |     ^~~~~
a.cc:11:22: error: 'b' was not declared in this scope
   11 |     printf("%d", a * b);
      |                      ^
Language: C

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

int main() {
int A,B;
cin>>A>>B;

cout<<A*B<<endl;
}


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

#define _CRT_SECURE_NO_WARNINGS


#include <stdio.h>
#include <conio.h>
#include <Windows.h>
#include <time.h>

int main(void)
{
	int A, B;
	scanf("%d %d", &A, &B);
	printf("%d", A*B);

	rewind(stdin);
	_getch();

	return 0;
}

Compiler output:
main.c:5:10: fatal error: conio.h: No such file or directory
    5 | #include <conio.h>
      |          ^~~~~~~~~
compilation terminated.
Language: C

#define _CRT_SECURE_NO_WARNINGS


#include <stdio.h>
#include <conio.h>
#include <time.h>

int main(void)
{
	int A, B;
	scanf("%d %d", &A, &B);
	printf("%d", A*B);

	return 0;
}

Compiler output:
main.c:5:10: fatal error: conio.h: No such file or directory
    5 | #include <conio.h>
      |          ^~~~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;

public class que1{
 public static void main(String[] args){
  Scanner scan = new Scanner(System.in);
  
  int A = scan.nextInt();
  int B = scan.nextInt();
  
  System.out.print(A*B);
 }
}

Compiler output:
Main.java:3: error: class que1 is public, should be declared in a file named que1.java
public class que1{
       ^
1 error
Language: C++

#include<iostream>
#include<fstream>
#include<complex>
#include<string>
#include<sstream>
#include<iomanip>
#include<omp.h>
#include<cmath>
using namespace std;

int main(){
int A,B,C;
C=AB;
cin>>A,B;
cout<<C;

return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'AB' was not declared in this scope; did you mean 'B'?
   13 | C=AB;
      |   ^~
      |   B
Language: Java

import java.util.Scanner;
public class Main{
  
  public static void main(String[] args){
 	
    Scanner input = new Scanner(System.in);
    
    int a[]=new int[2];
    
    for(int i=0;i<2;i++)
      a[i]=input.nextInt();
    
    system.out.println(a[0]*a[1]);
    
  }
   
}
  
  

Compiler output:
Main.java:13: error: package system does not exist
    system.out.println(a[0]*a[1]);
          ^
1 error
Language: C

#include <bits/stdc++.h>

using namespace std;

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

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

    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 namespace std;

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

Compiler output:
a.cc:5:1: error: 'cin' does not name a type
    5 | cin>>a;
      | ^~~
a.cc:7:1: error: 'cin' does not name a type
    7 | cin>>b;
      | ^~~
a.cc:8:1: error: 'cout' does not name a type
    8 | cout<<(a*b)<<endl;
      | ^~~~
Language: C++

#include <iostream>
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 |   int main (){
      |   ~~~
Language: C

#include<stdio.h>
int main()
{
  int a, b, c;
  scanf("%d%d",&a&b);
  c=a*b;
  printf("%d",a);

Compiler output:
main.c: In function 'main':
main.c:5:18: error: invalid operands to binary & (have 'int *' and 'int')
    5 |   scanf("%d%d",&a&b);
      |                ~~^
      |                |
      |                int *
main.c:7:3: error: expected declaration or statement at end of input
    7 |   printf("%d",a);
      |   ^~~~~~
Language: C

#include<iostream>
#define ll long long 
#define pb push_back
#define vl vector
using namespace std;
int main()
{
    ll n,m,t,k;
    cin>>n>>m;
    ll ans=n*m;
    cout<<ans;
}

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

#include<bits/stdc++.h>
#define ll long long 
#define pb push_back
#define vl vector
using namespace std;
int main()
{
    ll n,m,t,k;
    cin>>n>>m;
    ll ans=n*m;
    cout<<ans;
}

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>
using namespace std;

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

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: expected unqualified-id before 'int'
    5 |   int a,int b;
      |         ^~~
a.cc:6:11: error: 'b' was not declared in this scope
    6 |   cin>>a>>b;
      |           ^
a.cc:8:13: error: expected '}' at end of input
    8 |   cout<<mul;
      |             ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: Java

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

public class Solve {
    public static void main(String[] args) throws IOException{
        FastReader sc = new FastReader();
       int a = sc.nextInt();
       int b = sc.nextInt();
        System.out.println(a*b);
    }

    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;
        }
    }
}


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

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

public class A {
    public static void main(String[] args) throws IOException{
        FastReader sc = new FastReader();
        System.out.println(sc.nextInt()+sc.nextInt());
       

    }

    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;
        }
    }
}


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


vb#include <bits/stdc++.h>
#define int long long int
#define gif(a,b) (a/b +(a%b?1:0))
using namespace std;

int32_t main()
{   
    int t;
    cin >> t;
    int a, b;
    cin >> a >> b;
    if(a < t && b>=t)
    { a+=t;
      b+=t;
    }
    a/=t;
    a*=t;
    if(a+t <= b)
    cout << "OK";
    else 
    cout << "NG";
   return 0;
}


Compiler output:
a.cc:2:3: error: stray '#' in program
    2 | vb#include <bits/stdc++.h>
      |   ^
a.cc:2:1: error: 'vb' does not name a type
    2 | vb#include <bits/stdc++.h>
      | ^~
a.cc:7:1: error: 'int32_t' does not name a type
    7 | int32_t main()
      | ^~~~~~~
a.cc:1:1: note: 'int32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
  +++ |+#include <cstdint>
    1 |
Language: Java

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

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


Compiler output:
Main.java:8: error: incompatible types: String cannot be converted to int
    int a = sc.next();
                   ^
Main.java:9: error: incompatible types: String cannot be converted to int
    int b = sc.next();
                   ^
2 errors
Language: Java

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

public class 169A {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.next();
    int b = sc.next();
    System.out.println(a * b);
  }
}


Compiler output:
Main.java:5: error: <identifier> expected
public class 169A {
            ^
1 error
Language: Java

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

public class 169-A {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.next();
    int b = sc.next();
    System.out.println(a * b);
  }
}


Compiler output:
Main.java:5: error: <identifier> expected
public class 169-A {
            ^
1 error
Language: C

#include <studio.h>

int main(void) {
  int a, b;
  //%dでint,syort型の変換指定子
  scanf("%d", &a,&b);
  int c = a * b;
  printf("%d", c);
}


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