Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int N,C,q,n0 = 0,n1 = 0,n2 = 0;
  long int ans = 10000000000000;
  cin >> N >> C;
  int D[C+1][C+1];
  for(int i = 1;i <= C;i++){
    for(int j = 1;j <= C;j++)cin >> D[i][j];
  }
  int cost[3][C+1];
  for(int i = 0;i <= C;i++){
    cost[0][i] = 0;
    cost[1][i] = 0;
    cost[2][i] = 0;
  }
  for(int i = 1;i <= N;i++){
    for(int j = 1;j <= N;j++){
      cin >> q;
      if((i+j)%3 == 0){
        for(int i = 1;i <= C;i++){
          cost[0][i] += D[q][i];
        }
      }
      else if((i+j)%3 == 1){
        for(int i = 1;i <= C;i++){
          cost[1][i] += D[q][i];
        }
      }
      else if((i+j)%3 == 2){
        for(int i = 1;i <= C;i++){
          cost[2][i] += D[q][i];
        }
      }
    }
  }
  for(int i = 1;i <= C;i++){
    for(int j = 1;j <= C;j++){
      for(int k = 1;k <= C;k++){
        if(i != j && j != k && k != i){
          ans = min(ans,cost[0][i]+cost[1][j]+cost[2][k]);
        }
      }
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:41:20: error: no matching function for call to 'min(long int&, int)'
   41 |           ans = min(ans,cost[0][i]+cost[1][j]+cost[2][k]);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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: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:41:20: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'int')
   41 |           ans = min(ans,cost[0][i]+cost[1][j]+cost[2][k]);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:
/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:41:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   41 |           ans = min(ans,cost[0][i]+cost[1][j]+cost[2][k]);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~