Language: C++

#include <iostream>
#include <vector>
#include <bits/stdc++.h>
using namespace std;
 
 
int main() {
	int n, m , p; 
  cin >> n >> m >> p;
  
	int a[2010], b[2010];
  
  long long c[2010] , dist[1010];
	
	for (int i = 0; i < m; i++) {
		cin >> a[i] >> b[i] >> c[i];
      
		c[i] = -c[i];
       c[i] += p;
		a[i]--, b[i]--;
	}
	
	
	dist[0] = 0;
  
  for(int i=1;i<n;i++){
    dist[i] = 1000000000000000000000009;
  }
     
	for (int j = 0; j < n-1; j++) {
      
		for (int i = 0; i < m; i++) {
			if (dist[a[i]] == 1000000000000000000000009) continue;
          
			if (dist[b[i]] > dist[a[i]] + c[i]) {
				dist[b[i]] = dist[a[i]] + c[i];
			}
		}
	}
  
	long long ans = dist[n-1];
 
	bool abc[1010];
  
  for(int i=0;i<n;i++){
    abc[i] = false;
  }
  
	for (int j = 0; j < n; j++) {
		for (int i = 0; i < m; i++) {
			if (dist[a[i]] == 1000000000000000000000009) continue;
			if (dist[b[i]] > dist[a[i]] + c[i]) {
				dist[b[i]] = dist[a[i]] + c[i];
              
				abc[b[i]] = true;
			}
			if (abc[a[i]]) abc[b[i]] = true;
		}
	}
 
	if (abc[n-1])
		cout << "-1" << endl;
	else
		cout << max(0,-ans) << endl;
}

Compiler output:
a.cc:27:15: warning: integer constant is too large for its type
   27 |     dist[i] = 1000000000000000000000009;
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:33:43: warning: integer constant is too large for its type
   33 |                         if (dist[a[i]] == 1000000000000000000000009) continue;
      |                                           ^~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:51:43: warning: integer constant is too large for its type
   51 |                         if (dist[a[i]] == 1000000000000000000000009) continue;
      |                                           ^~~~~~~~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:64:28: error: no matching function for call to 'max(int, long long int)'
   64 |                 cout << max(0,-ans) << endl;
      |                         ~~~^~~~~~~~
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:64:28: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   64 |                 cout << max(0,-ans) << 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,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 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:64:28: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   64 |                 cout << max(0,-ans) << endl;
      |                         ~~~^~~~~~~~