Language: C++

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

const int lmax = 3000000000, lmin = -3000000000;

vector<vector<pair<int, int>>> G(2501);
vector<int> Ar(2501, lmax);

signed main() {
	int N, M, P, a, b, c;
	cin >> N >> M >> P;
	for (int i = 0;i < M;i++) {
		cin >> a >> b >> c;
		a--;b--;
		G[a].push_back({ b,P - c });
	}
	int cnt = 0;
	queue<int> Q;
	Ar[0] = 0;
	Q.push(0);
	Q.push(-1);
	while (Q.size() > 1) {
		a = Q.front();
		Q.pop();
		if (a < 0) {
			cnt++;
			if (cnt >= N)
				break;
			Q.push(-1);
			continue;
		}
		for (auto i : G[a]) {
			b = i.first;
			c = i.second;
			if (Ar[b] > Ar[a] + c) {
				Ar[b] = Ar[a] + c;
				Q.push(b);
			}
		}
	}
	while (!Q.empty()) {
		a = Q.front();
		Q.pop();
		if (a < 0)
			continue;
		if (Ar[a] == lmax)continue;
		for (auto i : G[a]) {
			b = i.first;
			if (Ar[b] == lmin)continue;
			Ar[b] = lmin;
			Q.push(b);
		}
	}
	if (Ar[N - 1] == lmin)
		cout << -1 << endl;
	else
		cout << max(0, -Ar[N - 1]) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:58:28: error: no matching function for call to 'max(int, __gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type)'
   58 |                 cout << max(0, -Ar[N - 1]) << 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:   template argument deduction/substitution failed:
a.cc:58:28: note:   deduced conflicting types for parameter 'const _Tp' ('int' and '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'})
   58 |                 cout << max(0, -Ar[N - 1]) << endl;
      |                         ~~~^~~~~~~~~~~~~~~
/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:
/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:58:28: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   58 |                 cout << max(0, -Ar[N - 1]) << endl;
      |                         ~~~^~~~~~~~~~~~~~~