Nu aveti permisiuni pentru a descarca fisierul grader_test22.ok
Cod sursa(job #2922910)
| Utilizator | Data | 10 septembrie 2022 16:46:24 | |
|---|---|---|---|
| Problema | Algoritmul lui Dijkstra | Scor | 20 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva educationala | Marime | 0.87 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int main()
{
int n, m;
fin >> n >> m;
vector<vector<pair<int, int>>> v(n + 1);
vector<int> dist(n + 1, INT_MAX / 2);
dist[1] = 0;
for (int i = 1; i <= m; i++)
{
int x, y, c;
fin >> x >> y >> c;
v[x].push_back(make_pair(y, c));
}
priority_queue<pair<int, int>> q;
q.push(make_pair(0, 1));
while (!q.empty())
{
int nod = q.top().second;
q.pop();
for (auto i: v[nod])
{
if (dist[nod] + i.second < dist[i.first])
{
dist[i.first] = dist[nod] + i.second;
q.push(make_pair(-dist[i.first], i.first));
}
}
}
for(int i = 2; i <= n; i++)
{
fout << dist[i] << " ";
}
return 0;
}
