Pagini recente » Cod sursa (job #388288) | Cod sursa (job #1898231) | Cod sursa (job #2407572) | Cod sursa (job #1418929) | Cod sursa (job #2854909)
#include <fstream>
#include <climits>
#include <queue>
//#include <iostream>
using namespace std;
ifstream cin("dijkstra.in");
ofstream cout("dijkstra.out");
const int NMAX = 50003;
vector <pair <int, int> > v[NMAX];
int d[NMAX];
class comp
{
public :
bool operator ()(pair <int, int> a, pair <int, int> b) const
{
return a.second < b.second;
}
};
priority_queue <pair <int, int>, vector <pair <int, int> >, comp> q;
int main()
{
int n, m, i;
cin >> n >> m;
while (m--)
{
int a, b, c;
cin >> a >> b >> c;
v[a].push_back({b, c});
}
for (i = 1; i <= n; i++)
d[i] = INT_MAX;
q.push({1, 0});
d[1] = 0;
while (!q.empty())
{
int f = q.top().first;
q.pop();
for (int i = 0; i < v[f].size(); i++)
if (d[f] + v[f][i].second < d[v[f][i].first])
{
d[v[f][i].first] = d[f] + v[f][i].second;
q.push(v[f][i]);
}
}
for (i = 2; i <= n; i++)
{
if (d[i] == INT_MAX)
d[i] = 0;
cout << d[i] << " ";
}
}