Language: C++

#include <iostream>
#include <string.h>
#include <algorithm>
#include <cmath>


using namespace std;

long height,points[101][101];

bool check_validity(int x, int y){
    int i,j;
    long h;
    h = -1;
    for(i = 0; i < 101; i++){
        for(j = 0; j < 101; j++){
            if(points[i][j] != -1){
                if(h == -1) h = max((points[i][j] + abs(i - x) + abs(j - y)),0);
                if(h != points[i][j] + abs(i - x) + abs(j - y)) return false;
            } 
        }
    }
    points[x][y] = h;
    return true;
}

int main(){
    int i,j,k,n,x,y,break_flag;
    long h;
    while(cin >> n){
        memset(points,-1,sizeof(points));
        break_flag = 0;
        height = 0;
        for(i = 0; i < n; i++){
            cin >> x >> y >> h;
            points[x][y] = h;
        }
        for(j = 0; j < 101; j++){
            for(k = 0; k < 101; k++){
                if(check_validity(j,k)){
                    break_flag = 1;
                    break;
                }
            }
            if(break_flag) break;
            cout << j << endl;
        }
        cout << j << " " << k << " " << points[j][k] << endl;
    }
    return 0;
}

Compiler output:
a.cc: In function 'bool check_validity(int, int)':
a.cc:18:36: error: no matching function for call to 'max(long int, int)'
   18 |                 if(h == -1) h = max((points[i][j] + abs(i - x) + abs(j - y)),0);
      |                                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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:   template argument deduction/substitution failed:
a.cc:18:36: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'int')
   18 |                 if(h == -1) h = max((points[i][j] + abs(i - x) + abs(j - y)),0);
      |                                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:3:
/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, 2 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:   template argument deduction/substitution failed:
a.cc:18:36: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   18 |                 if(h == -1) h = max((points[i][j] + abs(i - x) + abs(j - y)),0);
      |                                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~