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Cod sursa(job #881504)
#include<stdio.h>
#include<vector>
#include<utility>
#include<list>
#include<queue>
using namespace std;
#define inf 2000000
typedef pair <int, int> per;
int n,m,x,y,v;
vector<list<per> >graf;
list<per>::iterator it, last;
vector <bool> inCoada;
vector <int> dist;
per aux;
void bellman()
{
int top, nod, cost;
queue<int> coada;
dist[1] = 0;
coada.push(1);
while(!coada.empty())
{
top=coada.front();
inCoada[top] = 0;
coada.pop();
last=graf[top].end();
for(it=graf[top].begin();it!=last;it++)
{
nod=it->first; cost=it->second;
if(dist[nod]>dist[top]+cost)
{
dist[nod]=dist[top]+cost;
if(!inCoada[nod])
inCoada[nod] = true, coada.push(nod);
}
}
}
for(int i = 2; i <= n; ++i)
{if(dist[i]==inf)
printf("0 ");
else
printf("%d ",dist[i]);
}
}
int main()
{
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
scanf("%d%d",&n,&m);
graf.resize(n+1);
inCoada.resize(n+1);
aparitii.resize(n+1);
dist.resize(n+1, inf);
for(int i = 1; i <= m; ++i){
scanf("%d %d %d",&x,&aux.first,&aux.second);
graf[x].push_back(aux);
}
bellman();
}