Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <tuple>

using ll = long long;
using namespace std;
#define modmod 1000000007

#define rep(i,n) for(int i=0;i<n;i++)
#define REP(i,k,n) for(int i=k;i<n;i++)





int main(){
    int H,W;
    cin >> H >> W;

    ll result;

    if(H % 3 == 0){
        cout << 0 << endl;
        return 0;
    }else{
        result = W;
    }

    if(W % 3 == 0){
        cout << 0 << endl;
        return 0;
    }else{
        result = min(result,H);
    }

    REP(x,1,W){
   long long a = H*x;
   long long y = H/2;
   long long b = (W-x) * y;
   long long c = (W-x) * (H-y);
   result = min(max({a,b,c})-min({a,b,c}),result);

 }
 REP(y,1,H){
   long long a = W*y;
   long long x = W/2;
   long long b = (H-y) * x;
   long long c = (H-y) * (W-x);
   result = min(max({a,b,c})-min({a,b,c}),result);
 }

    cout << result << endl;

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:37:21: error: no matching function for call to 'min(ll&, int&)'
   37 |         result = min(result,H);
      |                  ~~~^~~~~~~~~~
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:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:37:21: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   37 |         result = min(result,H);
      |                  ~~~^~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:3:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:37:21: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   37 |         result = min(result,H);
      |                  ~~~^~~~~~~~~~