Pagini recente » Cod sursa (job #460896) | Cod sursa (job #2657666) | Cod sursa (job #1577806) | Cod sursa (job #1578169) | Cod sursa (job #1756755)
#include <iostream>
#include <cstdio>
#include <vector>
#include <queue>
using namespace std;
#define N_MAX 50000
#define INFINIT 9999999
vector<pair<int,int> >graf[N_MAX+1];
int n,m;
void citire()
{
scanf("%d %d ",&n,&m);
for(int i=1;i<=m;i++)
{
int nod1,nod2,cost;
scanf("%d %d %d ",&nod1,&nod2,&cost);
graf[nod1].push_back(make_pair(nod2,cost));
}
}
int a[N_MAX+1];
void dijkstra()
{
priority_queue< pair<int,int> , vector < pair<int,int> > , greater< pair<int,int> > > q;
vector<int> dist(n+1, INFINIT);
q.push(make_pair(0, 1));
dist[1]=0;
while(!q.empty())
{
int nod = q.top().second;
q.pop();
int len=graf[nod].size();
for (int i = 0; i < len; i++)
{
int vecin = graf[nod][i].first,cost = graf[nod][i].second;
if (dist[vecin] > dist[nod] + cost)
{
dist[vecin] = dist[nod] + cost;
q.push(make_pair(dist[vecin], vecin));
}
}
}
for (int i = 2; i <= n; i++)
printf("%d ",dist[i]);
}
int main()
{
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
citire();
dijkstra();
return 0;
}