Pagini recente » Cod sursa (job #1588266) | Cod sursa (job #1028526) | Cod sursa (job #2967093) | Cod sursa (job #995400) | Cod sursa (job #2867603)
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream fin ("dijkstra.in");
ofstream fout ("dijkstra.out");
int n,i,j,cate[100005],dist[100005],nou,m,p,x,y,cost,el;
typedef pair <long long, int > per;
vector <int> liste[100005];
vector <int> listeval[100005];
priority_queue <per, vector <per> , greater <per> > q;
void actual(int nod)
{
for(int i=0;i<=cate[nod]-1;i++)
{
nou=liste[nod][i];
if(dist[nod]+listeval[nod][i]<dist[nou])
{
dist[nou]=dist[nod]+listeval[nod][i];
q.push(make_pair(dist[nou],nou));
}
}
}
int main()
{
fin>>n>>m;
for(i=1;i<=m;i++)
{
fin>>x>>y>>cost;
liste[x].push_back(y); liste[y].push_back(x);
listeval[x].push_back(cost); listeval[y].push_back(cost);
cate[x]++;cate[y]++;
}
for(int i=0;i<=n;i++) dist[i]=1999999999;
q.push(make_pair(0,1));
dist[1]=0;
while(q.size()>=1)
{
el=q.top().second;
q.pop();
actual(el);
}
for(i=2;i<=n;i++)
{
if(dist[i]==1999999999) fout<<0<<' ';
else fout<<dist[i]<<' ';
}
return 0;
}