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

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define lvector vector<ll>
#define cvector vector<char>
#define svector vector<string>
#define lque queue<ll>
#define lpque priority_queue<ll>
#define dlpque priority_queue<ll,lvector,greater<ll>>
#define P pair<ll,ll>
#define ALL(a) a.begin(),a.end()
#define RALL(a) a.rbegin(),a.rend()
#define rep(i,n) for(ll i=0; i<n; ++i)
#define print(a) cout << (a) << endl

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  ll a,b,c,d;cin>>a>>b>>c>>d;
  ll ans=max(a*c,a*d,b*c,b*d);
  print(ans);
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:13: error: no matching function for call to 'max(long long int, long long int, long long int, long long int)'
   20 |   ll ans=max(a*c,a*d,b*c,b*d);
      |          ~~~^~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   candidate expects 2 arguments, 4 provided
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 4 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 4 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   candidate expects 2 arguments, 4 provided
Language: C++

#include <bits/stdc++.h>
using namespace stdl
  
int main()
{
	long long a, b, c, d, max;
  	cin>>a>>b>>c>>d;
  	max=a*b;
  	max=max(a*c, b*c);
  	max=max(max, a*d);
  	max=max(max, b*d);
  cout<<max;
  	return 0;
}

Compiler output:
a.cc:2:17: error: 'stdl' is not a namespace-name
    2 | using namespace stdl
      |                 ^~~~
a.cc:2:21: error: expected ';' before 'int'
    2 | using namespace stdl
      |                     ^
      |                     ;
    3 | 
    4 | int main()
      | ~~~                  
a.cc: In function 'int main()':
a.cc:7:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |         cin>>a>>b>>c>>d;
      |         ^~~
      |         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:9:16: error: 'max' cannot be used as a function
    9 |         max=max(a*c, b*c);
      |             ~~~^~~~~~~~~~
a.cc:10:16: error: 'max' cannot be used as a function
   10 |         max=max(max, a*d);
      |             ~~~^~~~~~~~~~
a.cc:11:16: error: 'max' cannot be used as a function
   11 |         max=max(max, b*d);
      |             ~~~^~~~~~~~~~
a.cc:12:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   12 |   cout<<max;
      |   ^~~~
      |   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 namespace std;

int main()
{
  long long int a, b, c, d, result;
  result = max(a*c, b*d, a*d, b*c);
  cout << result << "\n";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: no matching function for call to 'max(long long int, long long int, long long int, long long int)'
    8 |   result = max(a*c, b*d, a*d, b*c);
      |            ~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   candidate expects 2 arguments, 4 provided
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 4 provided
Language: C++

#include <bits/stdc++.h>
#include <iostream>
#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() {
  long long a, b, c, d, x, y;
  cin >> a >> b >> c >> d;
  cout << max(a * c, a * d, b * c, b* d) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:14: error: no matching function for call to 'max(long long int, long long int, long long int, long long int)'
   11 |   cout << max(a * c, a * d, b * c, b* d) << endl;
      |           ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   candidate expects 2 arguments, 4 provided
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 4 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 4 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   candidate expects 2 arguments, 4 provided
Language: C++

#include <stdio.h>

int main()
{
	int a = 0, b = 0, c = 0, d = 0;
	int ac = 0, ad = 0, bc = 0, bd = 0;
	int max = 0;

	scanf_s("%d%d%d%d", &a, &b, &c, &d);
	ac = a * c;
	ad = a * d;
	bc = b * c;
	bd = b * d;
	max = ac;

	if (max < ad) {
		max = ad;
	}
	if (max < bc) {
		max = bc;
	}
	if (max < bd) {
		max = bd;
	}

	printf("%d",max);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    9 |         scanf_s("%d%d%d%d", &a, &b, &c, &d);
      |         ^~~~~~~
      |         scanf
Language: C++

int main()
{
	int a = 0, b = 0, c = 0, d = 0;
	int ac = 0, ad = 0, bc = 0, bd = 0;
	int max = 0;

	scanf("%d%d%d%d", &a, &b, &c, &d);
	ac = a * c;
	ad = a * d;
	bc = b * c;
	bd = b * d;
	max = ac;

	if (max < ad) {
		max = ad;
	}
	if (max < bc) {
		max = bc;
	}
	if (max < bd) {
		max = bd;
	}

	printf("%d",max);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'scanf' was not declared in this scope
    7 |         scanf("%d%d%d%d", &a, &b, &c, &d);
      |         ^~~~~
a.cc:24:9: error: 'printf' was not declared in this scope
   24 |         printf("%d",max);
      |         ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | int main()
Language: C++

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

typedef long long int ll;
int main()
{
  ll a, b, c, d; cin >> a >> b >> c >> d;
  vector<ll> v{a*c, a*d, b*c, b*d};
  cout << (*max_element(v));
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:24: error: no matching function for call to 'max_element(std::vector<long long int>&)'
    9 |   cout << (*max_element(v));
      |             ~~~~~~~~~~~^~~
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:5641:5: note: candidate: 'template<class _FIter> constexpr _FIter std::max_element(_FIter, _FIter)'
 5641 |     max_element(_ForwardIterator __first, _ForwardIterator __last)
      |     ^~~~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:5641:5: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_algo.h:5666:5: note: candidate: 'template<class _FIter, class _Compare> constexpr _FIter std::max_element(_FIter, _FIter, _Compare)'
 5666 |     max_element(_ForwardIterator __first, _ForwardIterator __last,
      |     ^~~~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:5666:5: note:   candidate expects 3 arguments, 1 provided
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:524:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator, class _Compare> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> std::max_element(_ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Compare)'
  524 | max_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp);
      | ^~~~~~~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:524:1: note:   candidate expects 4 arguments, 1 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:528:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> std::max_element(_ExecutionPolicy&&, _ForwardIterator, _ForwardIterator)'
  528 | max_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last);
      | ^~~~~~~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:528:1: note:   candidate expects 3 arguments, 1 provided
Language: C

#include<stdio.h>

long long max(long long a,long long b){
  if(a>=b){
    return a;
  }else{
    return b;
  }
}

int main(void){
  long long a,b,c,d;
  scanf("%lld %lld %lld %lld",&a,&b,&c,&d);
  
  printf("%lld\n",max(max(a*c,a*d),max(b*c,b*d));
         return 0;
         }


Compiler output:
main.c: In function 'main':
main.c:15:49: error: expected ')' before ';' token
   15 |   printf("%lld\n",max(max(a*c,a*d),max(b*c,b*d));
      |         ~                                       ^
      |                                                 )
main.c:16:19: error: expected ';' before '}' token
   16 |          return 0;
      |                   ^
      |                   ;
   17 |          }
      |          ~
Language: C

#include<stdio.h>

long long max(long long a,long long b){
  if(a>=b){
    return a;
  }else{
    return b;
  }
}

int main(void){
  long long a,b,c,d;
  scanf("%lld %lld %lld %lld",&a,&b,&c,&d);
  
  printf("%lld\n",max(max(a*c,a*d),max(b*c,b*d));
         return 0:
         }

Compiler output:
main.c: In function 'main':
main.c:15:49: error: expected ')' before ';' token
   15 |   printf("%lld\n",max(max(a*c,a*d),max(b*c,b*d));
      |         ~                                       ^
      |                                                 )
main.c:16:19: error: expected ';' before '}' token
   16 |          return 0:
      |                   ^
      |                   ;
   17 |          }
      |          ~
Language: C++

#include <bits/stdc++.h>
#define IO ios::sync_with_stdio(0);cin.tie(0)
#define endl '\n'
#define MAXN maxn

using namespace std;

long long a, b, c, d;

signed main()
{
	IO;
	cin >> a >> b >> c >> d;
	if (a <= 0 && 0 <= b || c <= 0 && 0 <= d) {
		cout << max({a * c, a * d, b * c, b * d, 0}) << endl;
	} else {
		cout << max({a * c, a * d, b * c, b * d}) << endl;
	}
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:15:28: error: no matching function for call to 'max(<brace-enclosed initializer list>)'
   15 |                 cout << max({a * c, a * d, b * c, b * d, 0}) << endl;
      |                         ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 1 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   template argument deduction/substitution failed:
a.cc:15:28: note:   deduced conflicting types for parameter '_Tp' ('long long int' and 'int')
   15 |                 cout << max({a * c, a * d, b * c, b * d, 0}) << endl;
      |                         ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   candidate expects 2 arguments, 1 provided
Language: C++

#include <iostream>
#include <algorithm>
#include <cmath>
#define int long long
#define IOS std::ios::sync_with_stdio(false); cin.tie(NULL);cout.tie(NULL);

using namespace std;


int32_t main()
{
    
    IOS;
    //fill(isprime, true);
    //pre();
    
    int a,b,c,d;
    cin>>a>>b>>c>>d;
    int ans1=a*c;
    ans1=max(ans1,a*d);
    ans1=max(ans1,b*c);
    ans1=amx(ans1,b*d);
    cout<<ans1<<"\n";
    
}


Compiler output:
a.cc: In function 'int32_t main()':
a.cc:22:10: error: 'amx' was not declared in this scope
   22 |     ans1=amx(ans1,b*d);
      |          ^~~
Language: C++

#include<iostream>
#include<algorithm>
using namespace std;
int mian(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  
  cout<<max({a*c,a*d,b*c,b*d});
  return 0;
}


Compiler output:
/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<iostream>
#include<alsorithm>
using namespace std;
int mian(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  
  cout<<max({a*c,a*d,b*c,b*d});
  return 0;
}

Compiler output:
a.cc:2:9: fatal error: alsorithm: No such file or directory
    2 | #include<alsorithm>
      |         ^~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
using namespace std;
int main(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  
  if(b<0&&d<0)
    cout<<a*b;
  else if(a>=0&&d<0)
    cout<<a*d;
  else if(b<0&&c>=0)
    cout<<b*c;
  else((a<0&&b>=0&&c<0&&d>=0)||(a>=0&&c>=0))
    cout<<b*d;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:45: error: expected ';' before 'cout'
   13 |   else((a<0&&b>=0&&c<0&&d>=0)||(a>=0&&c>=0))
      |                                             ^
      |                                             ;
   14 |     cout<<b*d;
      |     ~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  
  if(b<0&&d<0)
    cout<<a*b;
  else if(a>=0&&d<0)
    cout<<a*d;
  else if(b<0&&c>=0)
    cout<<b*c;
  else((a<0&&b>=0&&c<0&&d>=0)||(a>=0&&c>=0)
    cout<<b*d;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:44: error: expected ')' before 'cout'
   13 |   else((a<0&&b>=0&&c<0&&d>=0)||(a>=0&&c>=0)
      |       ~                                    ^
      |                                            )
   14 |     cout<<b*d;
      |     ~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  long a_min;
  long a_max;
  long b_min;
  long b_max;;
  long multiplied_num;
  long max_ans;
  // 変数aで入力を受け取る
  cin >> a_min >>  a_max >> b_min >>b_max;
  max_ans = a_min * b_min;
  long a[] = {a_min,a_max};
  long b[] = {b_min,b_max};
  for (i=0;i<2;i++){
    for(j=0;j<2;j++){
		multiplied_num = a[i]*b[j];
      	if (max_ans < multiplied_num){
          max_ans = multiplied_num;
        }
      
    }
  }
	 
  
  
  cout << max_ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:8: error: 'i' was not declared in this scope
   16 |   for (i=0;i<2;i++){
      |        ^
a.cc:17:9: error: 'j' was not declared in this scope
   17 |     for(j=0;j<2;j++){
      |         ^
Language: C++

#include<iostream>
#include<algorithm>
#define ll long long
using namespace std;
int main(){
	ll a,b,c,d;
  	cin>>a>>b>>c>>d;
  	ll ans=max{(a*c,a*d,b*c,b*d)};
  	cout<<ans;
  	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: cannot resolve overloaded function 'max' based on conversion to type 'long long int'
    8 |         ll ans=max{(a*c,a*d,b*c,b*d)};
      |                ^~~
Language: C++

#include<iostream>
#include<algorithm>
#define ll long long
using namespace std;
int main(){
	ll a,b,c,d;
  	cin>>a>>b>>c>>d;
  	ll ans=max{(a*c,a*d,b*c,b*d)}
  	cout<<ans;
  	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: cannot resolve overloaded function 'max' based on conversion to type 'long long int'
    8 |         ll ans=max{(a*c,a*d,b*c,b*d)}
      |                ^~~
Language: C++

#include<iostream>
#include<algorithm>
#define ll long long
using namespace std;
int main(){
	ll a,b,c,d;
  	cin>>a>>b>>c>>d;
  	ll ans=<max{(a*c,a*d,b*c,b*d)}
  	cout<<ans;
  	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: expected primary-expression before '<' token
    8 |         ll ans=<max{(a*c,a*d,b*c,b*d)}
      |                ^
Language: Java

import java.util.Scanner;
class Main{
public static void main(String[]args){
Scanner input=new Scanner(System.in);
  long a=input.nextInt();
  long b=input.nextInt();
  long c=input.nextInt();
  long d=input.nextInt();
  long t=a*b;
  long y=a*c;
  long j=b*c;
  long k=b*d;
  
  if(t>y&&t>Math.max(j,k)){
  System.out.println(t);
  }else if(y>t&&t>Math.max(j,k)){ 
    System.out.println(y);
  }else if(j>k&&j>Math.max(t,y)){ 
    System.out.println(j);
  }else{
    System.out.println(k);
  }
}
}
import java.util.Scanner;
class Main{
public static void main(String[]args){
Scanner input=new Scanner(System.in);
  long a=input.nextInt();
  long b=input.nextInt();
  long c=input.nextInt();
  long d=input.nextInt();
  long t=a*b;
  long y=a*c;
  long j=b*c;
  long k=b*d;
  
  if(t>=y&&t>=Math.max(j,k)){
  System.out.println(t);
  }else if(y>=t&&y>=Math.max(j,k)){ 
    System.out.println(y);
  }else if(j>=k&&j>=Math.max(t,y)){ 
    System.out.println(j);
  }else{
    System.out.println(k);
  }
}
}

Compiler output:
Main.java:25: error: class, interface, enum, or record expected
import java.util.Scanner;
^
1 error
Language: Java

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
			
			int a = sc.nextInt();
			int b = sc.nextInt();
			int c = sc.nextInt();
			int d = sc.nextInt();

			double ac=a*c;
			double ad=a*d;
			double bc=b*c;
			double bd=b*d;
			if(ac>ad) {
				if(bc>bd) {
					System.out.println(ac>bc?ac:bc);					
				}else {
					System.out.println(ac>bd?ac:bd);					
				}
			}else {
				if(bc>bd) {
					System.out.println(ad>bc?ad:bc);					
				}else {
					System.out.println(ad>bd?ad:bd);					
				}				
			}
	}	
}

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

#include<stdio.h>
int main(void){
    int a,b,c,d;
    scanf("%d %d %d %d",&a,&b,&c,&d);
    if(a<b){
        if(c<d){
            print("%d",b*d);
        }
        else{
            print("%d",b*c);
        }
    }
    else{
        if(c<d){
            print("%d",b*d);
        }
        else{
            print("%d",b*c);
        }
    }
return 0;

Compiler output:
main.c: In function 'main':
main.c:7:13: error: implicit declaration of function 'print'; did you mean 'printf'? [-Wimplicit-function-declaration]
    7 |             print("%d",b*d);
      |             ^~~~~
      |             printf
main.c:21:1: error: expected declaration or statement at end of input
   21 | return 0;
      | ^~~~~~
Language: C

#include<stdio.h>
int main(void){
    int a,b,c,d;
    scanf("%d%d%d%d",&a,&b,&c,&d)
    if(a<b){
        if(c<d){
            print("%d",b*d);
        }
        else{
            print("%d",b*c);
        }
    }
    else{
        if(c<d){
            print("%d",b*d);
        }
        else{
            print("%d",b*c);
        }
    }
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:34: error: expected ';' before 'if'
    4 |     scanf("%d%d%d%d",&a,&b,&c,&d)
      |                                  ^
      |                                  ;
    5 |     if(a<b){
      |     ~~
Language: C

#include<stdio.h>
int main(void){
    int a,b,c,d;
    scanf("%d%d%d%d",&a,&b,&c,&d);
    if(a<b){
        if(c<d){
            print("%d",b*d);
        else{
            print("%d",b*c);
        }
    else{
        if(c<d){
            print("%d",b*d);
        else{
            print("%d",b*c);
        }
    }
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:13: error: implicit declaration of function 'print'; did you mean 'printf'? [-Wimplicit-function-declaration]
    7 |             print("%d",b*d);
      |             ^~~~~
      |             printf
main.c:8:9: error: expected '}' before 'else'
    8 |         else{
      |         ^~~~
main.c:11:5: error: expected '}' before 'else'
   11 |     else{
      |     ^~~~
main.c:14:9: error: expected '}' before 'else'
   14 |         else{
      |         ^~~~
Language: C

#include<stdio.h>
int main(void){
    int a,b,c,d;
    scanf("%d%d%d%d",&a,&b,&c,&d)
    if(a<b){
        if(c<d){
            print("%d",b*d);
        else{
            print("%d",b*c);
        }
    else{
        if(c<d){
            print("%d",b*d);
        else{
            print("%d",b*c);
        }
    }
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:34: error: expected ';' before 'if'
    4 |     scanf("%d%d%d%d",&a,&b,&c,&d)
      |                                  ^
      |                                  ;
    5 |     if(a<b){
      |     ~~                            
main.c:19:1: error: expected declaration or statement at end of input
   19 | }
      | ^
Language: C

include<stdio.h>
int main(void){
    int a,b,c,d;
    scanf("%d%d%d%d",&a,&b,&c,&d)
    if(a<b){
        if(c<d){
            print("%d",b*d);
        else{
            print("%d",b*c);
        }
    else{
        if(c<d){
            print("%d",b*d);
        else{
            print("%d",b*c);
        }
    }
return 0;
}

Compiler output:
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include<stdio.h>
      |        ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int n;
const int MOD=1e9+7;
int main()
{
	 long long a,b,c,d;
	 cin>>a>>b>>c>>d;
	 long long x,y,z,v;
	 x=a*c;
	 y=a*d;
	 z=b*c;
	 v=b*d
	 		
	cout<<max(max(x,y),max(z,v));
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:13:15: error: expected ';' before 'cout'
   13 |          v=b*d
      |               ^
      |               ;
   14 | 
   15 |         cout<<max(max(x,y),max(z,v));
      |         ~~~~
Language: C++

##include<bits/stdc++.h>
using namespace std;
int n;
const int MOD=1e9+7;
int main()
{
	 int a[2],b[2];
	 cin>>a[0]>>a[1]>>b[0]>>b[1];
	 long long res=-8e9;
	 for(int i=0;i<2;i++)
	 	for(int j=0;j<2;j++)
	 		res=max(res,a[i]*b[j]);
	 		
	cout<<res;
} 

Compiler output:
a.cc:1:1: error: stray '##' in program
    1 | ##include<bits/stdc++.h>
      | ^~
a.cc:1:3: error: 'include' does not name a type
    1 | ##include<bits/stdc++.h>
      |   ^~~~~~~
a.cc: In function 'int main()':
a.cc:8:10: error: 'cin' was not declared in this scope
    8 |          cin>>a[0]>>a[1]>>b[0]>>b[1];
      |          ^~~
a.cc:12:29: error: 'max' was not declared in this scope
   12 |                         res=max(res,a[i]*b[j]);
      |                             ^~~
a.cc:14:9: error: 'cout' was not declared in this scope
   14 |         cout<<res;
      |         ^~~~
Language: C++

#include<iostream>
using ll long long;
using namespace std;
ll a,b,c,d;
int main(){
    cin>>a>>b>>c>>d;
    ll t1=a*c,t2=a*d,t3=b*c,t4=b*d;
    cout<<max(t1,t4)<<endl;
    return 0;
}


Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'll'
    2 | using ll long long;
      |       ^~
a.cc:4:1: error: 'll' does not name a type
    4 | ll a,b,c,d;
      | ^~
a.cc: In function 'int main()':
a.cc:6:10: error: 'a' was not declared in this scope
    6 |     cin>>a>>b>>c>>d;
      |          ^
a.cc:6:13: error: 'b' was not declared in this scope
    6 |     cin>>a>>b>>c>>d;
      |             ^
a.cc:6:16: error: 'c' was not declared in this scope
    6 |     cin>>a>>b>>c>>d;
      |                ^
a.cc:6:19: error: 'd' was not declared in this scope
    6 |     cin>>a>>b>>c>>d;
      |                   ^
a.cc:7:5: error: 'll' was not declared in this scope
    7 |     ll t1=a*c,t2=a*d,t3=b*c,t4=b*d;
      |     ^~
a.cc:8:15: error: 't1' was not declared in this scope; did you mean 'tm'?
    8 |     cout<<max(t1,t4)<<endl;
      |               ^~
      |               tm
a.cc:8:18: error: 't4' was not declared in this scope; did you mean 'tm'?
    8 |     cout<<max(t1,t4)<<endl;
      |                  ^~
      |                  tm
Language: C++

include<stdio.h>
int main(void) {
	double a, b, c, d, ans;
	scanf("%lf%lf%lf%lf", &a, &b, &c, &d);
	ans = a * c;
	if (a * d > ans) {
		ans = a * d;
	}
	if (b * c > ans) {
		ans = b * c;
	}
	if (b * d > ans) {
		ans = b * d;
	}
	printf("%lld",(long long int)ans);
	return 0;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<stdio.h>
      | ^~~~~~~
Language: Java

import java.util.*;
 
class Main {
  public static void main(String args[]) {
    Scanner sc = new Scanner(System.in);
    long a = sc.nextLong();
    long b = sc.nextLong();
    long c = sc.nextLong();
    long d = sc.nextLong();
    
    long ans = max(max(a * c,a * d),max(b * c,b * d));
    
    System.out.print(ans);
  }
}

Compiler output:
Main.java:11: error: cannot find symbol
    long ans = max(max(a * c,a * d),max(b * c,b * d));
                   ^
  symbol:   method max(long,long)
  location: class Main
Main.java:11: error: cannot find symbol
    long ans = max(max(a * c,a * d),max(b * c,b * d));
                                    ^
  symbol:   method max(long,long)
  location: class Main
2 errors
Language: C

#include <stdio.h>

int main(void){
	long int a,b,c,d;
	long long int max;
	int x,y;

	scanf("%ld %ld %ld %ld",&a,&b,&c,&d);
	
	max = a*c > a*d ? a*c : a*d;
	max = max > b*c : max : b*c;
	max = max > b*d : max : b*d;

	printf("%lld\n",max);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:24: error: expected ';' before ':' token
   11 |         max = max > b*c : max : b*c;
      |                        ^~
      |                        ;
main.c:12:24: error: expected ';' before ':' token
   12 |         max = max > b*d : max : b*d;
      |                        ^~
      |                        ;
Language: C++

#include<stdio.h>
int main(void){
  long long int a,b,c,d,x,y,ans;
  scanf("%ld %ld %ld %ld",&a,&b,&c,&d);
  if(a>b)x=a;
  else x=b;
  if(c>d)y=c;
  else y=d;
  ans=x*y;
  printf(ans);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:10: error: invalid conversion from 'long long int' to 'const char*' [-fpermissive]
   10 |   printf(ans);
      |          ^~~
      |          |
      |          long long int
In file included from a.cc:1:
/usr/include/stdio.h:363:43: note:   initializing argument 1 of 'int printf(const char*, ...)'
  363 | extern int printf (const char *__restrict __format, ...);
      |                    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
Language: C++

#include<stdio.h>
int main(void){
  long long a,b,c,d,x,y;
  scanf("%ld %ld %ld %ld",&a,&b,&c,&d);
  if(a>b)x=a;
  else x=b;
  if(c>d)y=c;
  else y=d;
  ans=x*y;
  printf(ans);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'ans' was not declared in this scope
    9 |   ans=x*y;
      |   ^~~
Language: C++

#include<stdio.h>
int main(void){
  double a,b,c,d,x,y;
  scanf("%lf %lf %lf %lf",&a,&b,&c,&d);
  if(a>b)x=a;
  else x=b;
  if(c>d)y=c;
  else y=d;
  and=x*y;
  printf(ans);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:6: error: expected identifier before '=' token
    9 |   and=x*y;
      |      ^
a.cc:10:10: error: 'ans' was not declared in this scope
   10 |   printf(ans);
      |          ^~~
Language: C++

#include<stdio.h>
int main(void){
  double a,b,c,d,x,y;
  scanf("%lf %lf %lf %lf",&a,&b,&c,&d);
  if(a>b)x=a;
  else x=b;
  if(c>d)y=c;
  else y=d;
  printf(x*y);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: cannot convert 'double' to 'const char*'
    9 |   printf(x*y);
      |          ~^~
      |           |
      |           double
In file included from a.cc:1:
/usr/include/stdio.h:363:43: note:   initializing argument 1 of 'int printf(const char*, ...)'
  363 | extern int printf (const char *__restrict __format, ...);
      |                    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
Language: C++

#include<stdio.h>
int main(void){
  int a,b,c,d,x,y;
  scanf("%d %d %d %d",&a,&b,&c,&d);
  if(a>b)x=a;
  else x=b;
  if(c>d)y=c;
  else y=d;
  printf(x*y);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
    9 |   printf(x*y);
      |          ~^~
      |           |
      |           int
In file included from a.cc:1:
/usr/include/stdio.h:363:43: note:   initializing argument 1 of 'int printf(const char*, ...)'
  363 | extern int printf (const char *__restrict __format, ...);
      |                    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
Language: C++

#include<stdio.h>
int main(void){
  double a,b,c,d,x,y;
  scanf("%lf %lf %lf %lf",&a,&b,&c,&d);
  if(a>b)x=a;
  else x=b;
  if(c>d)y=c;
  else y=d;
  print(x*y);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'print' was not declared in this scope; did you mean 'printf'?
    9 |   print(x*y);
      |   ^~~~~
      |   printf
Language: C++

#include<stdio.h>
int main(void){
  int a,b,c,d,x,y;
  scanf("%d",&a);
  scanf("%d",&b);
  scanf("%d",&c);
  scanf("%d",&d);
  if(a>b)x=a;
  else x=b;
  if(c>d)y=c;
  else y=d;
  print(x*y);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:3: error: 'print' was not declared in this scope; did you mean 'printf'?
   12 |   print(x*y);
      |   ^~~~~
      |   printf
Language: C++

#include<stdio.h>
int main(void){
  int a,b,c,d,x,y;
  scanf("%d %d %d %d",&a,&b,&c,&d);
  if(a>b)x=a;
  else x=b;
  if(c>d)y=c;
  else y=d;
  print(x*y);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'print' was not declared in this scope; did you mean 'printf'?
    9 |   print(x*y);
      |   ^~~~~
      |   printf
Language: C

#include <stdio.h>
int main(){
  long x[2],y[2],max,i,j;
  
  scanf("%ld %ld %ld %ld",&x[0],&x[1],&y[0],&y[1]);
  
  max=x[0]*y[0];
  for(i=0;i<=1;i++){
    for(j=0;j<=1;j++){
      if(max<x[i]*y[i]){
        max=x[i]*y[i]);
      }
    }
  }
  
  printf("%ld",max);
}

Compiler output:
main.c: In function 'main':
main.c:11:22: error: expected ';' before ')' token
   11 |         max=x[i]*y[i]);
      |                      ^
      |                      ;
main.c:11:22: error: expected statement before ')' token
Language: C++

#include <bits/stdc++.h>
int main() {long long A,B,C,D;std::cin>>A>>B>>C>>D;std::cout<<std::max({A*C,B*D,A*D,B*C})<<endl;}

Compiler output:
a.cc: In function 'int main()':
a.cc:2:92: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    2 | int main() {long long A,B,C,D;std::cin>>A>>B>>C>>D;std::cout<<std::max({A*C,B*D,A*D,B*C})<<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,
                 from a.cc:1:
/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() {long long A,B,C,D;cin>>A>>B>>C>>D;cout<<max({a*c,b*d,a*d,b*c})<<endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:58: error: 'a' was not declared in this scope
    3 | int main() {long long A,B,C,D;cin>>A>>B>>C>>D;cout<<max({a*c,b*d,a*d,b*c})<<endl;}
      |                                                          ^
a.cc:3:60: error: 'c' was not declared in this scope
    3 | int main() {long long A,B,C,D;cin>>A>>B>>C>>D;cout<<max({a*c,b*d,a*d,b*c})<<endl;}
      |                                                            ^
a.cc:3:62: error: 'b' was not declared in this scope
    3 | int main() {long long A,B,C,D;cin>>A>>B>>C>>D;cout<<max({a*c,b*d,a*d,b*c})<<endl;}
      |                                                              ^
a.cc:3:64: error: 'd' was not declared in this scope
    3 | int main() {long long A,B,C,D;cin>>A>>B>>C>>D;cout<<max({a*c,b*d,a*d,b*c})<<endl;}
      |                                                                ^
a.cc:3:56: error: no matching function for call to 'max(<brace-enclosed initializer list>)'
    3 | int main() {long long A,B,C,D;cin>>A>>B>>C>>D;cout<<max({a*c,b*d,a*d,b*c})<<endl;}
      |                                                     ~~~^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 1 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   candidate expects 2 arguments, 1 provided
Language: C++

#include <bits/stdc++.h>
int main() {long long A,B,C,D;std::cin>>A>>B>>C>>D;std::cout<<max(A*C,max(A*D,max(B*C,B*D)))<<endl;}

Compiler output:
a.cc: In function 'int main()':
a.cc:2:79: error: 'max' was not declared in this scope; did you mean 'std::max'?
    2 | int main() {long long A,B,C,D;std::cin>>A>>B>>C>>D;std::cout<<max(A*C,max(A*D,max(B*C,B*D)))<<endl;}
      |                                                                               ^~~
      |                                                                               std::max
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: 'std::max' declared here
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
a.cc:2:71: error: 'max' was not declared in this scope; did you mean 'std::max'?
    2 | int main() {long long A,B,C,D;std::cin>>A>>B>>C>>D;std::cout<<max(A*C,max(A*D,max(B*C,B*D)))<<endl;}
      |                                                                       ^~~
      |                                                                       std::max
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: 'std::max' declared here
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
a.cc:2:63: error: 'max' was not declared in this scope; did you mean 'std::max'?
    2 | int main() {long long A,B,C,D;std::cin>>A>>B>>C>>D;std::cout<<max(A*C,max(A*D,max(B*C,B*D)))<<endl;}
      |                                                               ^~~
      |                                                               std::max
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: 'std::max' declared here
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
a.cc:2:95: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    2 | int main() {long long A,B,C,D;std::cin>>A>>B>>C>>D;std::cout<<max(A*C,max(A*D,max(B*C,B*D)))<<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++

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

int main(){
  int a,b,c,d;
  scanf("%d%d%d%d",&a,&b,&c,&d);
  long long int ans=max({max(a,b)*max(d,c),min(a,b)*min(c,d), min(a,b)*(max(c,d), max(a,b)*min(c,d)});
  printf("%lld, ans);
}
             


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inlcude; did you mean #include?
    1 | #inlcude<bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc:8:10: warning: missing terminating " character
    8 |   printf("%lld, ans);
      |          ^
a.cc:8:10: error: missing terminating " character
    8 |   printf("%lld, ans);
      |          ^~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'scanf' was not declared in this scope
    6 |   scanf("%d%d%d%d",&a,&b,&c,&d);
      |   ^~~~~
a.cc:7:26: error: 'max' was not declared in this scope
    7 |   long long int ans=max({max(a,b)*max(d,c),min(a,b)*min(c,d), min(a,b)*(max(c,d), max(a,b)*min(c,d)});
      |                          ^~~
a.cc:7:44: error: 'min' was not declared in this scope; did you mean 'main'?
    7 |   long long int ans=max({max(a,b)*max(d,c),min(a,b)*min(c,d), min(a,b)*(max(c,d), max(a,b)*min(c,d)});
      |                                            ^~~
      |                                            main
a.cc:7:100: error: expected ')' before '}' token
    7 |   long long int ans=max({max(a,b)*max(d,c),min(a,b)*min(c,d), min(a,b)*(max(c,d), max(a,b)*min(c,d)});
      |                                                                        ~                           ^
      |                                                                                                    )
a.cc:7:21: error: 'max' was not declared in this scope
    7 |   long long int ans=max({max(a,b)*max(d,c),min(a,b)*min(c,d), min(a,b)*(max(c,d), max(a,b)*min(c,d)});
      |                     ^~~
a.cc:9:1: error: expected primary-expression before '}' token
    9 | }
      | ^
Language: C++

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

int main(){
  int a,b,c,d;
  scanf("%d%d%d%d",&a,&b,&c,&d);
  ll ans=max({max(a,b)*max(d,c),min(a,b)*min(c,d), min(a,b)*(max(c,d), max(a,b)*min(c,d)})
  printf("%lld, ans);
}
             


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inlcude; did you mean #include?
    1 | #inlcude<bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc:8:10: warning: missing terminating " character
    8 |   printf("%lld, ans);
      |          ^
a.cc:8:10: error: missing terminating " character
    8 |   printf("%lld, ans);
      |          ^~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'scanf' was not declared in this scope
    6 |   scanf("%d%d%d%d",&a,&b,&c,&d);
      |   ^~~~~
a.cc:7:3: error: 'll' was not declared in this scope
    7 |   ll ans=max({max(a,b)*max(d,c),min(a,b)*min(c,d), min(a,b)*(max(c,d), max(a,b)*min(c,d)})
      |   ^~
a.cc:7:90: error: expected primary-expression before ')' token
    7 |   ll ans=max({max(a,b)*max(d,c),min(a,b)*min(c,d), min(a,b)*(max(c,d), max(a,b)*min(c,d)})
      |                                                                                          ^
Language: C++

#include <iostream>

using namespace std;

long long cmax(long long a, long long b) { return ((a > b) ? a : b); }

int main() {
 	long long a, b, c, d;
  	cin >> a >> b >> c >> d;
  
  	long long mx = LLONG_MIN;
  	mx = cmax(mx, b * d);
  	mx = cmax(mx, b * c);
  	mx = cmax(mx, a * d);
  	mx = cmax(mx, a * c);
  
  	cout << mx << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:24: error: 'LLONG_MIN' was not declared in this scope
   11 |         long long mx = LLONG_MIN;
      |                        ^~~~~~~~~
a.cc:2:1: note: 'LLONG_MIN' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    1 | #include <iostream>
  +++ |+#include <climits>
    2 |
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define all(c) c.begin(),c.end()
#define init(c) memset(c,0,sizeof c)
#define S second
#define F first
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
const int N=20000005;
int n,k,x,t,a,b,m;
string s;
vi v;

void solve(){
	cin >> a >> b >> c >> d;
	cout << max(d*b,a*c);
}

int main(){

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

Compiler output:
a.cc: In function 'void solve()':
a.cc:18:26: error: 'c' was not declared in this scope
   18 |         cin >> a >> b >> c >> d;
      |                          ^
a.cc:18:31: error: 'd' was not declared in this scope
   18 |         cin >> a >> b >> c >> d;
      |                               ^
Language: C++

#include<iostream>
using namespace std;

int main()
{
  	ll a,b,c,d;
  	ll max1,min1,max2,min2;
  	cin>>a>>b>>c>>d;
  	if(a>=b)
    {
      max1=a; min1=b;
    }
  	else
    {
       max1=b; min1=a;
    }
  if(c>=d)
    {
      max2=c; min2=d;
    }
  	else
    {
       max2=d; min2=c;
    }
  	if(max1>0 && max2>0)
    {
      cout<<max1*max2<<endl;
    }
  	else if(max1<0 && max2>0 )
    {
      cout<<min1*min2<<endl;
    }
  	else if(max1>0 && max2<0 )
    {
      cout<<min1*min2<<endl;
    }
  	else
      cout<<max2*max1<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'll' was not declared in this scope
    6 |         ll a,b,c,d;
      |         ^~
a.cc:7:11: error: expected ';' before 'max1'
    7 |         ll max1,min1,max2,min2;
      |           ^~~~~
      |           ;
a.cc:8:14: error: 'a' was not declared in this scope
    8 |         cin>>a>>b>>c>>d;
      |              ^
a.cc:8:17: error: 'b' was not declared in this scope
    8 |         cin>>a>>b>>c>>d;
      |                 ^
a.cc:8:20: error: 'c' was not declared in this scope
    8 |         cin>>a>>b>>c>>d;
      |                    ^
a.cc:8:23: error: 'd' was not declared in this scope
    8 |         cin>>a>>b>>c>>d;
      |                       ^
a.cc:11:7: error: 'max1' was not declared in this scope
   11 |       max1=a; min1=b;
      |       ^~~~
a.cc:11:15: error: 'min1' was not declared in this scope
   11 |       max1=a; min1=b;
      |               ^~~~
a.cc:15:8: error: 'max1' was not declared in this scope
   15 |        max1=b; min1=a;
      |        ^~~~
a.cc:15:16: error: 'min1' was not declared in this scope
   15 |        max1=b; min1=a;
      |                ^~~~
a.cc:19:7: error: 'max2' was not declared in this scope
   19 |       max2=c; min2=d;
      |       ^~~~
a.cc:19:15: error: 'min2' was not declared in this scope
   19 |       max2=c; min2=d;
      |               ^~~~
a.cc:23:8: error: 'max2' was not declared in this scope
   23 |        max2=d; min2=c;
      |        ^~~~
a.cc:23:16: error: 'min2' was not declared in this scope
   23 |        max2=d; min2=c;
      |                ^~~~
a.cc:25:12: error: 'max1' was not declared in this scope
   25 |         if(max1>0 && max2>0)
      |            ^~~~
a.cc:25:22: error: 'max2' was not declared in this scope
   25 |         if(max1>0 && max2>0)
      |                      ^~~~
a.cc:31:13: error: 'min1' was not declared in this scope
   31 |       cout<<min1*min2<<endl;
      |             ^~~~
a.cc:31:18: error: 'min2' was not declared in this scope
   31 |       cout<<min1*min2<<endl;
      |                  ^~~~
a.cc:35:13: error: 'min1' was not declared in this scope
   35 |       cout<<min1*min2<<endl;
      |             ^~~~
a.cc:35:18: error: 'min2' was not declared in this scope
   35 |       cout<<min1*min2<<endl;
      |                  ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long
int main(){
    ll a,b,c,d;
    cin>>a>>b>>c>>d;
    ll ans;
    ans = max(a*c,max(a*d,max(b*c,b*d)))
    // for(ll i=min(a,b);i<=max(a,b);i++){
    //     for(ll j=min(c,d);j<=max(c,d);j++){
    //         ans=max(ans,i*j);
    //     }
    // }
    cout<<ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:41: error: expected ';' before 'cout'
    8 |     ans = max(a*c,max(a*d,max(b*c,b*d)))
      |                                         ^
      |                                         ;
......
   14 |     cout<<ans;
      |     ~~~~