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

#include <iostream>

using namespace std;

int main()
{
    int A,B;
    cin>>A>>B;
    int m;
    int x=A+B; int y=A-B;int z=A*B;
    if (x>=y&&x>=z){
        cout<<x<<endl;
        m=x;}
    else if(y>=x&&y=z){
        cout<<y<<endl;
        m=y;}
    else{
        cout<<z<<endl;
        m=z;}
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: lvalue required as left operand of assignment
   14 |     else if(y>=x&&y=z){
      |             ~~~~^~~
Language: C++

#include <iostream>

using namespace std;

int main(){
   int a,b;
   cin>> a>>b;
   if (a+b>a-b&&a+b>a*b){cout<<a+b<<endl;
   cout<<"The largest number among A+B = "<<a+b<<"and A-B = "<<a-b<<"and A*B = "<<a*b<< " is "<<a+b;}
   else if (a-b>a+b&&a-b>a*b){cout<< a-b<<endl;
     cout<<"The largest number among A+B = "<<a+b<<"and A-B = "<<a-b<<"and A*B = "<<a*b<< " is "<<a-b;}
   else {cout<< a*b<<endl;
  cout<<"The largest number among A+B = "<<a+b<<"and A-B = "<<a-b<<"and A*B = "<<a*b<< " is "<<a*b;}
    return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:14:14: error: expected '}' at end of input
   14 |     return 0;
      |              ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
int a,b,sum,mult,subtr;
cin >> a >>b;
sum = a+b;
mult=a*b;
subtr = a-b;
cout << sum << "  " << subtr <<"  "<< mult << endl; 
if (sum >=mult && sum>=subtr)cout <<sum;
else if(mult>=sum && mult>=subtr)cout << mult;
else if(subtr>=sum &&  ubtr>=mult) cout << subtr;
return 0;  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:24: error: 'ubtr' was not declared in this scope; did you mean 'subtr'?
   12 | else if(subtr>=sum &&  ubtr>=mult) cout << subtr;
      |                        ^~~~
      |                        subtr
Language: C++

#include<iostream>
using namespace std;
int main()
{
    int a,b;
    cin>>a>>b;
    int x=a+b;
    int y=a*b;
    int z=a-b;
    if(x>y && x>z){cout<<x<<endl;}
    else if(z>y && z>x){cout<<z<<endl;}
    else (y>z && y>x){cout<<y<<endl;}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:22: error: expected ';' before '{' token
   12 |     else (y>z && y>x){cout<<y<<endl;}
      |                      ^
      |                      ;
Language: C++

#include <iostream>

using namespace std;

int main()

{
    int A,B;
    cin>>A>>B;
    if(A+B>A-B && A+B>A*B)
        cout<<A+B<<endl;
        cout<<"The largest number among"<< "A+B = "<<A+B <<"A-B = "<<A-B << "A*B = "<<A*B<< "is"<< A+B<<endl;
    else if(A-B>A+B && A-B>A*B)
        cout<<A-B<<endl;
         cout<<"The largest number among"<< "A+B = "<<A+B <<"A-B = "<<A-B << "A*B = "<<A*B<< "is"<< A-B<<endl;
    else
        cout<<A*B<<endl;
        cout<<"The largest number among"<< "A+B = "<<A+B <<"A-B = "<<A-B << "A*B = "<<A*B<< "is"<< A*B<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: 'else' without a previous 'if'
   13 |     else if(A-B>A+B && A-B>A*B)
      |     ^~~~
a.cc:16:5: error: 'else' without a previous 'if'
   16 |     else
      |     ^~~~
Language: C++

#include <iostream>
using namespace std;
int main() {
int a,b;


cin>>a>>b;
if(a+b>a-b&&a+b>=a*b){
    cout<<a+b;}
else if(a-b>a+b&&a-b>a*b){
        cout<<a-b;}
else if(a*b>a-b&&a*b>=a+b){
        cout<<a*b;}
else if(a==0&&b==0){
    cout<<"0";
}
else if(a!=0&&b==0){
    cout<<a;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:19:2: error: expected '}' at end of input
   19 | }
      |  ^
a.cc:3:12: note: to match this '{'
    3 | int main() {
      |            ^
Language: C++

#include <iostream>
using  namespace std;

int main()
{
    int A, B;
    cin >> A >> B;
    if (((A - B) > =(A + B)) && ((A - B) > =(A * B)))
        cout << A - B << endl;
    else if (((A * B) > =(A + B)) && ((A * B) > =(A - B)))
        cout << A * B << endl;
    else if (((A + B) >= (A - B)) && ((A + B) > =(A * B)))
        cout << A + B << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:20: error: expected primary-expression before '=' token
    8 |     if (((A - B) > =(A + B)) && ((A - B) > =(A * B)))
      |                    ^
a.cc:8:44: error: expected primary-expression before '=' token
    8 |     if (((A - B) > =(A + B)) && ((A - B) > =(A * B)))
      |                                            ^
a.cc:10:25: error: expected primary-expression before '=' token
   10 |     else if (((A * B) > =(A + B)) && ((A * B) > =(A - B)))
      |                         ^
a.cc:10:49: error: expected primary-expression before '=' token
   10 |     else if (((A * B) > =(A + B)) && ((A * B) > =(A - B)))
      |                                                 ^
a.cc:12:49: error: expected primary-expression before '=' token
   12 |     else if (((A + B) >= (A - B)) && ((A + B) > =(A * B)))
      |                                                 ^
Language: C++

#include <iostream>
using namespace std;
int main() {
    int a,b;
    cin>>a>>b;
    if(a+b>=a-b && a+b>=a*b){
        cout<<a+b;
    }
    else if(a-b>=a+b && a-b>=a*b){
        cout<<a-b;
    }
    else if(a*b>=a+b && a*b>=a-b){
        cout<<a*b;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:14:6: error: expected '}' at end of input
   14 |     }
      |      ^
a.cc:3:12: note: to match this '{'
    3 | int main() {
      |            ^
Language: C++

#include <iostream>
using namespace std;
int main() {
    int a,b;
    100<=a,b<=100;
    cin>>a>>b;
    if(a+b>a-b && a+b>=a*b){
        cout<<a+b;
    }
    else if(a-b>a+b && a-b>a*b){
        cout<<a-b;
    }
    else if(a*b>a+b && a*b>a-b){
        cout<<a*b;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:15:6: error: expected '}' at end of input
   15 |     }
      |      ^
a.cc:3:12: note: to match this '{'
    3 | int main() {
      |            ^
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:15:14: error: expected '}' at end of input
   15 |     return 0;
      |              ^
a.cc:3:12: note: to match this '{'
    3 | int main() {
      |            ^
Language: C++

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

int main() {
	int N;
	cin >> N;
	vector<int> list(N, 0);
	string s;
	ll result = 0;

	repeat(i, N) {
		cin >> s;
		int n = 0;
		for(int i = 0; i < s.length(); i++) {
			n += int(s[i]);
		}
		list[i] = n;
	}

	sort(list.begin(), list.end());

	ll i = 0;
	while(i < N) {
		ll n = list[i], count = 0;

		for(int j = i; j < N; j++) {
			if (n == list[j]) {
				count++;
				i++;
			}
			else break;
		}

		ll calc = 1;
		if (count > 1) {
			for (int j = 0; j < 2; j++) {
				calc *= count;
				count--;
			}
		}
		result += calc/2;
	}
ll calc = 1;
		if (count > 1) {
			for (int j = 0; j < 2; j++) {
				calc *= count;
				count--;
			}
		}
		result += calc/2;
	cout << result << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:46:27: error: invalid operands of types '<unresolved overloaded function type>' and 'int' to binary 'operator>'
   46 |                 if (count > 1) {
      |                     ~~~~~~^~~
a.cc:48:41: error: overloaded function with no contextual type information
   48 |                                 calc *= count;
      |                                         ^~~~~
a.cc:49:38: error: no post-decrement operator for type
   49 |                                 count--;
      |                                      ^~
Language: C++

#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
#include <math.h>
using namespace std;
int main(void){
    int a, b;
    cin >> a >>b;
    int ans = max(a+b, a*b, a-b);
    cout << ans << endl;
}


Compiler output:
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: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:10:18:   required from here
   10 |     int ans = max(a+b, a*b, a-b);
      |               ~~~^~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:306:17: error: '__comp' cannot be used as a function
  306 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
Language: C++

#include <iostream>

using namespace std;

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

    if (A+B>A-B&&A+B>A*B){
        cout<<A+B<<endl;
    }
     else if (A*B>A+B&&A*B>A-B){
        cout<<A*B<<endl;
    }
    else if (A-B>A+B&&A-B>A*B){
        cout<<A-B<<endl;
    }


    return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:21:14: error: expected '}' at end of input
   21 |     return 0;
      |              ^
a.cc:6:1: note: to match this '{'
    6 | {
      | ^
Language: C++

int main()
{
    int a,b;
    cin>>a>>b;
   if (a+b>a-b&&a+b>=a*b){
        cout<<a+b<<endl;
   }
    else if (a-b>a+b&&a-b>a*b){
        cout<<a-b<<endl;
        }

        else  (a*b>a+b&&a*b>a-b){
            cout<<a*b<<endl;
        }
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:5: error: 'cin' was not declared in this scope
    4 |     cin>>a>>b;
      |     ^~~
a.cc:6:9: error: 'cout' was not declared in this scope
    6 |         cout<<a+b<<endl;
      |         ^~~~
a.cc:6:20: error: 'endl' was not declared in this scope
    6 |         cout<<a+b<<endl;
      |                    ^~~~
a.cc:9:9: error: 'cout' was not declared in this scope
    9 |         cout<<a-b<<endl;
      |         ^~~~
a.cc:9:20: error: 'endl' was not declared in this scope
    9 |         cout<<a-b<<endl;
      |                    ^~~~
a.cc:12:33: error: expected ';' before '{' token
   12 |         else  (a*b>a+b&&a*b>a-b){
      |                                 ^
      |                                 ;
Language: C++

#include <iostream>

using namespace std;

int main()
{   int A,B;
    cin>>A;
    cin>>B;
    int sum,multi,subtract;
    sum=A+B;
    multi=A*B;
    subtract=A-B;
    if(sum>=multi && sum>=subtract){cout<<<<sum;}
    else if (multi>=sum && multi>=subtract ){cout<<multi;}
    else if(subtract>=multi && subtract>=sum){cout<<subtract;}
    return 0;}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:43: error: expected primary-expression before '<<' token
   13 |     if(sum>=multi && sum>=subtract){cout<<<<sum;}
      |                                           ^~
Language: C++

int A,B;
   cin >> A >> B;

   int sum=A+B;
   int diff= A-B;
   int pro = A*B;

   if (sum > diff & pro){
       cout << sum << endl;
   }
   if (diff > sum & pro){
       cout << diff << endl;
   }
   if ( pro > diff & sum) {
       cout << pro << endl;
   }

Compiler output:
a.cc:2:4: error: 'cin' does not name a type
    2 |    cin >> A >> B;
      |    ^~~
a.cc:8:4: error: expected unqualified-id before 'if'
    8 |    if (sum > diff & pro){
      |    ^~
a.cc:11:4: error: expected unqualified-id before 'if'
   11 |    if (diff > sum & pro){
      |    ^~
a.cc:14:4: error: expected unqualified-id before 'if'
   14 |    if ( pro > diff & sum) {
      |    ^~
Language: C++

#include <iostream>
using namespace std ;
int main()
{
	int a,b;
a>=-100;
b<=100;
	cin>>a>>b;
	if((a+b)>(a-b)&&(a+b)>(a*b))
		cout<<a+b;
	else if ((a-b)>(a+b)&&(a-b)>(a*b))
		cout<<a-b;
	else if((a*b)>=(a-b)&&(a*b)>=(a+b))
		cout<<a*b;
	else if (a=0||b=0)
		cout<<a+b;
	else if(a==b)
		cout<<a*b;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:21: error: lvalue required as left operand of assignment
   15 |         else if (a=0||b=0)
      |                    ~^~~
Language: C++

	#include <iostream>
using namespace std ;
int main()
{
	int a,b;
a>=-100;
b<=100;
	cin>>a>>b;
	if((a+b)>(a-b)&&(a+b)>(a*b))
		cout<<a+b;
	else if ((a-b)>(a+b)&&(a-b)>(a*b))
		cout<<a-b;
	else if((a*b)>=(a-b)&&(a*b)>=(a+b))
		cout<<a*b;
	else if (a=0||b=0)
		cout<<a+b;
	else if(a==b)
		cout<<a*b;
	return 0;
}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:21: error: lvalue required as left operand of assignment
   15 |         else if (a=0||b=0)
      |                    ~^~~
a.cc: At global scope:
a.cc:21:1: error: expected declaration before '}' token
   21 | }
      | ^
Language: C++

#include <iostream>
using namespace std;
int main()
{
int A,B;
cin>>A>>B;
int sum, sub, mult;
sum=A+B;
sub=A-B;
mult=A*B;
if(sum>=sub && sum>=mult)
    cout<<sum<<endl;
    cout<<" the largest number among A+B="<<sum<<", A-B="<<sub<<", and A*B="<<mult<<"is "<< sum<<endl;
else if(sub >=sum && sub>=mult)
    cout<<sub<<endl;
    cout<<" the largest number among A+B="<<sum<<", A-B="<<sub<<", and A*B="<<mult<<"is "<< sub<<endl;
else
    cout<< mult<<endl;
    cout<<" the largest number among A+B="<<sum<<", A-B="<<sub<<", and A*B="<<mult<<"is "<<mult<<endl;
return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:14:1: error: 'else' without a previous 'if'
   14 | else if(sub >=sum && sub>=mult)
      | ^~~~
a.cc:17:1: error: 'else' without a previous 'if'
   17 | else
      | ^~~~
Language: C++

#include <iostream>
using namespace std;
int main()
{
int A,B;
cin>>A>>B;
int sum, sub, mult;
sum=A+B;
sub=A-B;
mult=A*B;
if (sum>=sub && sum>=mult)
    cout<< sum<<endl;
    cout<<" the largest number among A+B="<<sum<<", A-B="<<sub<<", and A*B=" 
    <<mult<<"is"<< sum<<endl;
else if ( sub >=sum && sub>=mult)
    cout<<sub<<endl;
      cout<<" the largest number among A+B="<<sum<<", A-B="<<sub<<", and A*B=" 
    <<mult<<"is"<< sub<<endl;
else 
cout<< mult<<endl;
  cout<<" the largest number among A+B="<<sum<<", A-B="<<sub<<", and A*B=" 
    <<mult<<"is"<<mult<<endl;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:1: error: 'else' without a previous 'if'
   15 | else if ( sub >=sum && sub>=mult)
      | ^~~~
a.cc:19:1: error: 'else' without a previous 'if'
   19 | else
      | ^~~~
Language: C++

#include<iostream>
using namespace std;
void main()
{
int a,b ;
cin>>a>>b;
int sum , sub , mult;
sum=a+b;
sub=a-b;
mult=a*b;
if ( sum>sub && sum>mult);
{
cout<< sum<< endl;
cout<<"the largest number among a+b , a-b , a*b is "<< sum <<endl;
}
else if ( sub>sum && sub>mult);
{
cout<< sub<<endl;
cout<<"the largest number among a+b , a-b , a*b is "<< sub <<endl; 
}
else if ( mult>sum && mult>sub);
{
cout<< mult<<endl;
cout<<"the largest number among a+b , a-b , a*b is "<< mult<<endl;
}
else;
{
cout<< " three are equal" << endl;
}

}

Compiler output:
a.cc:3:1: error: '::main' must return 'int'
    3 | void main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:16:1: error: 'else' without a previous 'if'
   16 | else if ( sub>sum && sub>mult);
      | ^~~~
a.cc:21:1: error: 'else' without a previous 'if'
   21 | else if ( mult>sum && mult>sub);
      | ^~~~
a.cc:26:1: error: 'else' without a previous 'if'
   26 | else;
      | ^~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
int a,b ;
cin>>a>>b;
int sum , sub , mult;
sum=a+b;
sub=a-b;
mult=a*b;
if ( sum>sub && sum>mult)
{
cout<< sum<< endl;
cout<<"the largest number among a+b , a-b , a*b is "<< sum <<endl;
}
else if ( sub>sum && sub>mult)
{
cout<< sub<<endl;
cout<<"the largest number among a+b , a-b , a*b is "<< sub <<endl; 
}
else if ( mult>sum && mult>sub)
{
cout<< mult<<endl;
cout<<"the largest number among a+b , a-b , a*b is "<< mult<<endl;
}
else
{
cout<< " three are equal" << endl;
}
return 0
}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:9: error: expected ';' before '}' token
   30 | return 0
      |         ^
      |         ;
   31 | }
      | ~
Language: C++

#include<iostream>
using namespace std;
int main()
{
int a,b ;
cin>>a>>b;
int sum , sub , mult;
sum=a+b;
sub=a-b;
mult=a*b;
if ( sum>sub && sum>mult)
cout<< sum<< endl;
else if ( sub>sum && sub>mult)
cout<< sub<<endl;
else if ( mult>sum && mult>sub)
cout<< mult<<endl;
else
cout<< " three are equal" << endl;

return 0
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:9: error: expected ';' before '}' token
   20 | return 0
      |         ^
      |         ;
   21 | }
      | ~
Language: C++

#include<iostream>
using namespace std;
int main()
{
int a,b ;
cin>>a>>b;
int sum , sub , mult;
sum=a+b;
sub=a-b;
mult=a*b;
if ( sum>sub && sum>mult)
{
cout<< sum<< endl;
}
else if ( sub>sum && sub>mult)
{
cout<< sub<<endl;
}
else if ( mult>sum && mult>sub)
{
cout<< mult<<endl;
}
else
{
cout<< " three are equal" << endl;
}
return 0
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:9: error: expected ';' before '}' token
   27 | return 0
      |         ^
      |         ;
   28 | }
      | ~
Language: C++

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

Compiler output:
a.cc:1:21: warning: extra tokens at end of #include directive
    1 | #include <iostream> using namespace std; int main() { int x,y,a,b,c; cin>>x>>y; a=x-y; b=x+y; c=x*y; if(a>=b&&a>=c) cout<<a<<endl; else if(b>=a&&b>=c) cout<<b<<endl; else cout<<c<<endl; return 0; }
      |                     ^~~~~
/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++

int main()
{
    int x,y;
    cin>>x>>y;
    int a=x+y;
    int b=x-y;
    int c=x*y;
    if (a>b & a>c){
        cout<<a;
    }
    else if (b>a & b>c){
        cout<<b;
    }
    else{
        cout<<c;
    }

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:5: error: 'cin' was not declared in this scope
    4 |     cin>>x>>y;
      |     ^~~
a.cc:9:9: error: 'cout' was not declared in this scope
    9 |         cout<<a;
      |         ^~~~
a.cc:12:9: error: 'cout' was not declared in this scope
   12 |         cout<<b;
      |         ^~~~
a.cc:15:9: error: 'cout' was not declared in this scope
   15 |         cout<<c;
      |         ^~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{ 
  int A;
  int B;
  cin >> A >> B;
  if(B<=0&&A-B-AB>=0){
    cout <<"A-B";
  }else if(B>=0&&AB-A-B<0){
    cout <<"A+B";
    }else{
      cout << "A×B";
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: 'AB' was not declared in this scope; did you mean 'B'?
    8 |   if(B<=0&&A-B-AB>=0){
      |                ^~
      |                B
Language: C++

#include<iostream>
using namespace std;
int main()
{ 
  int A;
  int B;
  cin >> A >> B;
  if(B<=0&&A-B-AB>=0){
    cout <<"A-B";
  }else if(B>=0&&AB-A-B<0){
    cout <<"A+B"{
    }else{
      cout << "A×B";
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: 'AB' was not declared in this scope; did you mean 'B'?
    8 |   if(B<=0&&A-B-AB>=0){
      |                ^~
      |                B
a.cc:11:17: error: expected ';' before '{' token
   11 |     cout <<"A+B"{
      |                 ^
      |                 ;
a.cc:12:6: error: expected '}' before 'else'
   12 |     }else{
      |      ^~~~
a.cc:10:27: note: to match this '{'
   10 |   }else if(B>=0&&AB-A-B<0){
      |                           ^
Language: C++

#include <iostream>
#include <algorithm>

int main() {
  int a, b;
  cin >> a >> b;
  int sum = a+b; int multiple = a*b; int difference = a-b;
  cout >> max(max(sum, multiple), difference)
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> 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:8:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   cout >> max(max(sum, multiple), difference)
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:8:15: error: 'max' was not declared in this scope; did you mean 'std::max'?
    8 |   cout >> max(max(sum, multiple), difference)
      |               ^~~
      |               std::max
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:2:
/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:8:11: error: 'max' was not declared in this scope; did you mean 'std::max'?
    8 |   cout >> max(max(sum, multiple), difference)
      |           ^~~
      |           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)
      |     ^~~
Language: C++

#include <iostream>
#include <algorithm>

using namespace std;

int main() {
  int a, b;
  cin >> a >> b;
  sum = a+b; multiple = a*b; difference = a-b;
  cout >> max(max(sum, multiple), difference)
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'sum' was not declared in this scope
    9 |   sum = a+b; multiple = a*b; difference = a-b;
      |   ^~~
a.cc:9:14: error: 'multiple' was not declared in this scope
    9 |   sum = a+b; multiple = a*b; difference = a-b;
      |              ^~~~~~~~
a.cc:9:30: error: 'difference' was not declared in this scope
    9 |   sum = a+b; multiple = a*b; difference = a-b;
      |                              ^~~~~~~~~~
Language: C++

#include <iostream>
#include <algorithm>

int main() {
  int a, b;
  cin >> a >> b;
  sum = a+b; multiple = a*b; difference = a-b;
  cout >> max(max(sum, multiple), difference)
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> a >> b;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'sum' was not declared in this scope
    7 |   sum = a+b; multiple = a*b; difference = a-b;
      |   ^~~
a.cc:7:14: error: 'multiple' was not declared in this scope
    7 |   sum = a+b; multiple = a*b; difference = a-b;
      |              ^~~~~~~~
a.cc:7:30: error: 'difference' was not declared in this scope
    7 |   sum = a+b; multiple = a*b; difference = a-b;
      |                              ^~~~~~~~~~
a.cc:8:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   cout >> max(max(sum, multiple), difference)
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:8:15: error: 'max' was not declared in this scope; did you mean 'std::max'?
    8 |   cout >> max(max(sum, multiple), difference)
      |               ^~~
      |               std::max
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:2:
/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:8:11: error: 'max' was not declared in this scope; did you mean 'std::max'?
    8 |   cout >> max(max(sum, multiple), difference)
      |           ^~~
      |           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)
      |     ^~~
Language: Java

public class Solution{
public void solution(int A, int B){
      int minus = A- B;
      int plus = A+B;
      int times = A*B;
      System.out.print(Math.max(minus, math.max(plus, times)));

}
}

Compiler output:
Main.java:1: error: class Solution is public, should be declared in a file named Solution.java
public class Solution{
       ^
Main.java:6: error: cannot find symbol
      System.out.print(Math.max(minus, math.max(plus, times)));
                                       ^
  symbol:   variable math
  location: class Solution
2 errors
Language: Java

/* package whatever; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
public class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc = new Scanner(System.in);
		
		int x = sc.nextInt();
		int y = sc.nextInt();
		
		int a = x+y;
		int b = x-y;
		int c = x*y;
		
		int ans = Math.max(a,Math.max(b,c));
		System.out.println(ans);
	}
}

Compiler output:
Main.java:8: error: class Ideone is public, should be declared in a file named Ideone.java
public class Ideone
       ^
1 error
Language: C++

#include <iostream>

using namespace std;

int main()
{
   int A,B,mx,sum,sub,mult;
   cin>>A>>B;
   sum=A+B;
   sub=A-B;
   mult=A*B;
   if(sum>sub && sum>mult){
    mx=sum;
   }
   else if(sub>sum && sub>mult){
    mx=sub;
   }
   else {
    mx=mult;
   
   cout<<mx;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:2: error: expected '}' at end of input
   23 | }
      |  ^
a.cc:6:1: note: to match this '{'
    6 | {
      | ^
Language: C++

#include <iostream>
using namespace std;
int main() {()

int a,b,multi,pls,mins;
cin>>a>>b;
multi=a*b;
pls=a+b;
mins=a-b;
if (multi>pls&&multi>mins)
cout<<multi;
else if (pls>multi&&pls>mins)
cout<<pls ;
else cout<<mins;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:14: error: expected primary-expression before ')' token
    3 | int main() {()
      |              ^
a.cc:6:6: error: 'a' was not declared in this scope
    6 | cin>>a>>b;
      |      ^
a.cc:6:9: error: 'b' was not declared in this scope
    6 | cin>>a>>b;
      |         ^
a.cc:7:1: error: 'multi' was not declared in this scope
    7 | multi=a*b;
      | ^~~~~
a.cc:8:1: error: 'pls' was not declared in this scope
    8 | pls=a+b;
      | ^~~
a.cc:9:1: error: 'mins' was not declared in this scope
    9 | mins=a-b;
      | ^~~~
Language: C++

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

int32_t main(){
	int a, b; cin>>a>>b;
	cout<<max(a + b, a - b, a * b)<<endl;
}
#include<bits/stdc++.h>
using namespace std;

int32_t main(){
	int a, b; cin>>a>>b;
	cout<<max(a + b, max(a - b, a * b))<<endl;
}


Compiler output:
a.cc:11:9: error: redefinition of 'int32_t main()'
   11 | int32_t main(){
      |         ^~~~
a.cc:4:9: note: 'int32_t main()' previously defined here
    4 | int32_t main(){
      |         ^~~~
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: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:6:11:   required from here
    6 |         cout<<max(a + b, a - b, a * b)<<endl;
      |               ~~~^~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:306:17: error: '__comp' cannot be used as a function
  306 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
Language: C++

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


Compiler output:
a.cc:6:24: error: extended character 　 is not valid in an identifier
    6 |   if(a*b > a-b && a*b >　a+b)
      |                        ^
a.cc:8:29: error: extended character 　 is not valid in an identifier
    8 |   else if(a+b > a-b && a+b >　a*b)
      |                             ^
a.cc: In function 'int main()':
a.cc:6:24: error: '\U00003000a' was not declared in this scope
    6 |   if(a*b > a-b && a*b >　a+b)
      |                        ^~~
Language: C++


#include <iostream>

using namespace std;

int
main ()
{
int a,b;
cin>>a>>b;
if ((a+b>a-b)&&(a+b>a*b))
{
    cout<<a+b;
    
}
else if ((a-b>a+b)&&(a-b>a*b))
{
    cout<<a-b;
}
else if ((a*b>a+b)&&(a*b>a-b)
{
    cout<<a*b;
}
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:30: error: expected ';' before '{' token
   20 | else if ((a*b>a+b)&&(a*b>a-b)
      |                              ^
      |                              ;
   21 | {
      | ~                             
a.cc:24:3: error: expected primary-expression before 'return'
   24 |   return 0;
      |   ^~~~~~
a.cc:23:2: error: expected ')' before 'return'
   23 | }
      |  ^
      |  )
   24 |   return 0;
      |   ~~~~~~
a.cc:20:9: note: to match this '('
   20 | else if ((a*b>a+b)&&(a*b>a-b)
      |         ^
Language: C++

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

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: expected initializer before 'b'
    6 |   int a b;
      |         ^
a.cc:7:10: error: 'a' was not declared in this scope
    7 |   cin >> a >> b;
      |          ^
a.cc:7:15: error: 'b' was not declared in this scope
    7 |   cin >> a >> b;
      |               ^
a.cc:8:15: error: no matching function for call to 'max(<brace-enclosed initializer list>)'
    8 |   cout << max ({a + b, a - b, a * b}) << 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>
#include <algorithm>
using namespace std;

int main(){
  int a,b;
  cout << max(a+b,a-b,a*b) << endl;
  return 0;
}


Compiler output:
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: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:7:14:   required from here
    7 |   cout << max(a+b,a-b,a*b) << endl;
      |           ~~~^~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:306:17: error: '__comp' cannot be used as a function
  306 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
Language: C++

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

int main(){
  int a,b;
  cout << max(a+b,a-b,a*b) << endl;
  return 0;
}


Compiler output:
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: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:6:14:   required from here
    6 |   cout << max(a+b,a-b,a*b) << endl;
      |           ~~~^~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:306:17: error: '__comp' cannot be used as a function
  306 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
Language: C++

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

int main(){
  int a,b;
  cout << max(a+b,a-b,a*b) << endl;
  return 0
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:11: error: expected ';' before '}' token
    7 |   return 0
      |           ^
      |           ;
    8 | }
      | ~          
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: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:6:14:   required from here
    6 |   cout << max(a+b,a-b,a*b) << endl;
      |           ~~~^~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:306:17: error: '__comp' cannot be used as a function
  306 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
Language: C

int main(void) {
  int a,b;
  
  scanf("%d %d",&a,&b);
  
  if (a+b > a-b)
    if (a+b > a*b) printf("%d",a+b);
    else printF("%d",a*b);
  else if (a-b > a * b) printf("%d",a-b)
    else printf("%d",a*b);
}
      

Compiler output:
main.c: In function 'main':
main.c:4:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    4 |   scanf("%d %d",&a,&b);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main(void) {
main.c:4:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    4 |   scanf("%d %d",&a,&b);
      |   ^~~~~
main.c:4:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:7:20: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    7 |     if (a+b > a*b) printf("%d",a+b);
      |                    ^~~~~~
main.c:7:20: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:7:20: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:7:20: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:8:10: error: implicit declaration of function 'printF' [-Wimplicit-function-declaration]
    8 |     else printF("%d",a*b);
      |          ^~~~~~
main.c:9:25: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    9 |   else if (a-b > a * b) printf("%d",a-b)
      |                         ^~~~~~
main.c:9:25: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:41: error: expected ';' before 'else'
    9 |   else if (a-b > a * b) printf("%d",a-b)
      |                                         ^
      |                                         ;
   10 |     else printf("%d",a*b);
      |     ~~~~
Language: C++

#include <iostream>
#include<string>
using namespace std;
int main(void){
    // Your code here!
    int a,b;
    cin>>a>>b;
    cout<<max({a+b,a-b,a*b})<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: no matching function for call to 'max(<brace-enclosed initializer list>)'
    8 |     cout<<max({a+b,a-b,a*b})<<endl;
      |           ~~~^~~~~~~~~~~~~~~
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, 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
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:22: error: 'X' was not declared in this scope
    6 | cout<<max({A+B,A-B,A*X})<<endl;}
      |                      ^
a.cc:6:10: error: no matching function for call to 'max(<brace-enclosed initializer list>)'
    6 | cout<<max({A+B,A-B,A*X})<<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>
using namespace std;
int main(){
int A,B;
cin>>A>>B;
int D=A+B,E=A-B,F=A*B;
if(D>E&&D>F){cout<<D<<endl;}
else if(E>D&&E>F){cout<<E<<endl;}
else{cout<<F<<endl;}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:21: error: expected '}' at end of input
    9 | else{cout<<F<<endl;}
      |                     ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

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

int main(){

  int a=0;
  int b=0;

  cin>>a>>b;
  int max=a+b;
  if(max<(a-b))max=a-b;
  if(max<a*b))max=a*b;
  
  cou<<max;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:14: error: expected primary-expression before ')' token
   15 |   if(max<a*b))max=a*b;
      |              ^
a.cc:17:3: error: 'cou' was not declared in this scope; did you mean 'cos'?
   17 |   cou<<max;
      |   ^~~
      |   cos
Language: C++

#include <iostrean>
#include <algorithm>

using namespace std;

int main(){
    int k;
    int x;
    cin >> k >> x;
    cout << max({k + x, k - x, k * x}) << endl;
}

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

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

int main(){
    int a,b;
    cin >> a >> b;
    int aa = max(a - b, a * b, a + b);
    cout << aa << endl;
}

Compiler output:
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: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:9:17:   required from here
    9 |     int aa = max(a - b, a * b, a + b);
      |              ~~~^~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:306:17: error: '__comp' cannot be used as a function
  306 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
Language: C++

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

int main(){
    int a,b;
    int aa = max(a - b, a * b, a + b);
    cout << aa << endl;
}

Compiler output:
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: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:8:17:   required from here
    8 |     int aa = max(a - b, a * b, a + b);
      |              ~~~^~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:306:17: error: '__comp' cannot be used as a function
  306 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
Language: C

#include <stdio.h>

int main(void){
  int a, b;
  scanf("%d %d", &a, &b);
  max = a+b;
  if(max < a-b) max = a-b;
  if(max < a*b) max = a*b;
  printf("%d", max);
  return 0;
}
  

Compiler output:
main.c: In function 'main':
main.c:6:3: error: 'max' undeclared (first use in this function)
    6 |   max = a+b;
      |   ^~~
main.c:6:3: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main(){
  int a,b,sum;
  scanf("%d%d",&a&b);
  sum=a+b;
  if(a-b>sum){
    sum=a-b;
  }
  if(a*b>sum){
    sum=a*b;
  }
  printf("%d\n",sum);
 return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:18: error: invalid operands to binary & (have 'int *' and 'int')
    4 |   scanf("%d%d",&a&b);
      |                ~~^
      |                |
      |                int *
Language: C

#include <stdio.h>
int main(){
  int a,b,sum;
  scanf("%d %d",&a &b);
  sum=a+b;
  if(a-b>sum){
    sum=a-b;
  }
  if(a*b>sum){
    sum=a*b;
  }
  printf("%d\n",sum);
 return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:20: error: invalid operands to binary & (have 'int *' and 'int')
    4 |   scanf("%d %d",&a &b);
      |                 ~~ ^
      |                 |
      |                 int *
Language: C++

#include <algorithm>
#include <assert.h>
#include <bitset>
#include <cfloat>
#include <complex>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits.h>
#include <list>
#include <map>
#include <math.h>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <string.h>
#include <time.h>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#define rep(i,n) for(int i=0;i<n;i++)
#define REP(i,n) for(int i=1;i<=n;i++)
#define int long long
#define ll long long
using namespace std;

int main(){

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

    int x,y,z;

     x = a + b;
     y = a - b;
     z = a * b;

     cout << max({x,y,z}) << endl;
}




Compiler output:
cc1plus: error: '::main' must return 'int'
Language: C++

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

int main() {
    int a,b;
    cin >> a >> b;
    
    int one = a+b;
    int two = a-b;
    int three = a*b;
    cout << max(one,two,three) << endl;
    return 0;

}

Compiler output:
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: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:11:16:   required from here
   11 |     cout << max(one,two,three) << endl;
      |             ~~~^~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:306:17: error: '__comp' cannot be used as a function
  306 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
Language: C++

#include <iostream>
using namespace std;
int main(){
  int A,B;
  if(A+B>A-B || A+B>A*B);
    cout<<A+B;
  else if (A-B>A+B || A-B>A*B);
    cout<<A-B;
  else if (A*B>A+B || A*B>A-B);
    cout<<A*B;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'else' without a previous 'if'
    7 |   else if (A-B>A+B || A-B>A*B);
      |   ^~~~
a.cc:9:3: error: 'else' without a previous 'if'
    9 |   else if (A*B>A+B || A*B>A-B);
      |   ^~~~
Language: C++

#include <iostream>
using namespace std;
int main(){
  int A,B;
  if(A+B>A-B || A+B>A*B)
    cout<<A+B;
  else (A-B>A+B || A-B>A*B)
    cout<<A-B;
  else (A*B>A+B || A*B>A-B)
    cout<<A*B;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:28: error: expected ';' before 'cout'
    7 |   else (A-B>A+B || A-B>A*B)
      |                            ^
      |                            ;
    8 |     cout<<A-B;
      |     ~~~~                    
a.cc:9:3: error: 'else' without a previous 'if'
    9 |   else (A*B>A+B || A*B>A-B)
      |   ^~~~
a.cc:9:28: error: expected ';' before 'cout'
    9 |   else (A*B>A+B || A*B>A-B)
      |                            ^
      |                            ;
   10 |     cout<<A*B;
      |     ~~~~
Language: C++

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

int main() {
	int a,b;
	
	cin >> a >> b;
	
	int max_o = max(a + b, a - b);
	cout << max_o(max,a*b) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:22: error: 'max_o' cannot be used as a function
   11 |         cout << max_o(max,a*b) << endl;
      |                 ~~~~~^~~~~~~~~
Language: C++

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

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

Compiler output:
a.cc: In function 'int main()':
a.cc:10:20: error: 'max' cannot be used as a function
   10 |         int max=max(a+b,a-b)
      |                 ~~~^~~~~~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
int a,b;
  int s,d,m;
  s=a-b;
  d=a+b;
  m=a*b;
  if(s>d&&s>m)
    cout<<s:
  if(d>s&&d>m)
    cout<<d;
  if(m>d&&m>s)
    cout<<m;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:12: error: expected ';' before ':' token
   10 |     cout<<s:
      |            ^
      |            ;