Language: C++

#include <iostream>
#include <algorithm>
#define int long long
using namespace std;
struct edge { int to, from, cost; };
int INF = 1000000000000;
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  int n, m, p;
  cin >> n >> m >> p;

  int a[m], b[m], c[m];
  for(int i = 0; i < m; i++) {
    cin >> a[i] >> b[i] >> c[i];
    a[i]--;
    b[i]--;
  }

  edge es[m];
  for(int i = 0; i < m; i++) {
    es[i] = (edge) { b[i], a[i], p - c[i]};
  }
  int d[n];
  for(int i = 0; i < n; i++) d[i] = INF;
  d[0] = 0;

  bool neg_loop = false;
  for(int i = 0; i < 2 * n; i++) {
    for(int j = 0; j < m; j++) {
      edge e = es[j];
      if(d[e.from] != INF && d[e.to] > d[e.from] + e.cost) {
        d[e.to] = d[e.from] + e.cost;
        if(i >= n - 1 && e.to == n - 1) {
          neg_loop = true;
          break;
        }
      }

    }
  }

  if(neg_loop) {
    cout << -1 << "\n";
    return 0;
  }


  cout << max(0, -d[n - 1]) << "\n";
  return 0;
}


Compiler output:
cc1plus: error: '::main' must return 'int'
a.cc: In function 'int main()':
a.cc:49:14: error: no matching function for call to 'max(int, long long int)'
   49 |   cout << max(0, -d[n - 1]) << "\n";
      |           ~~~^~~~~~~~~~~~~~
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:49:14: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   49 |   cout << max(0, -d[n - 1]) << "\n";
      |           ~~~^~~~~~~~~~~~~~
/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:2:
/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:49:14: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   49 |   cout << max(0, -d[n - 1]) << "\n";
      |           ~~~^~~~~~~~~~~~~~