Pagini recente » Cod sursa (job #1638503) | Cod sursa (job #1550546) | Cod sursa (job #1556997) | Cod sursa (job #564814) | Cod sursa (job #1324312)
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
#define MAX 250005
#define INF (1<<30)
vector < pair < int, int > > v[MAX];
priority_queue < pair < int, int > > Q;
int cost[MAX];
int main()
{
int n, m, x, y, c;
fin >> n >> m;
for(int i = 1; i<=m; i++)
{
fin >> x >> y >> c;
v[x].push_back(make_pair(y, c));
}
Q.push(make_pair(0, 1));
for(int i = 2; i<=n; i++)
cost[i] = INF;
while(!Q.empty())
{
int nod = Q.top().second;//extragem nodu' cu distanta minima
Q.pop();
for(int j = 0; j<v[nod].size(); j++)//parcurgem vecinii sa facem imbunatatiri
{
int vecin = v[nod][j].first;
if(cost[vecin] > cost[nod] + v[nod][j].second)
{
cost[vecin] = cost[nod] + v[nod][j].second;
Q.push(make_pair(-cost[vecin], vecin));
}
}
}
for(int i = 2; i<=n; i++)
fout << cost[i] << " ";
return 0;
}