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Cod sursa(job #1563649)
| Utilizator | Data | 6 ianuarie 2016 13:51:39 | |
|---|---|---|---|
| Problema | Algoritmul lui Dijkstra | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 1.04 kb |
#include <vector>
#include <stdio.h>
#include <queue>
#include <climits>
#include <iostream>
#include <algorithm>
#include <map>
using namespace std;
vector<int>graf[50001];
map<pair<int,int>,int>c;
int a[50001],n,m;
int shortest(int start,int stop)
{
fill(a,a+n+1,INT_MAX);
queue<int>q;
q.push(start);
a[start]=0;
while(!q.empty())
{
int nod=q.front();
q.pop();
for(int i=0;i<graf[nod].size();i++)
{
int vecin=graf[nod][i];
if(a[nod]+c[make_pair(nod,vecin)]<a[vecin])
{
q.push(vecin);
a[vecin]=a[nod]+c[make_pair(nod,vecin)];
}
}
}
return a[stop];
}
int main()
{
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
scanf("%d %d",&n,&m);
for(int i=1;i<=m;i++)
{
int a,b,cost;
scanf("%d %d %d",&a,&b,&cost);
c[make_pair(a,b)]=cost;
graf[a].push_back(b);
}
for(int i=2;i<=n;i++)
printf("%d ",shortest(1,i));
return 0;
}
