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Cod sursa(job #991688)
#include <fstream>
#include <stack>
#include <queue>
#include <vector>
#include <iterator>
using namespace std;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> ii;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
priority_queue< ii,vector<ii>,greater<ii> > Q;
int n,m,i,a,ok[50001],nod,dist,b,c,d[50001];
vector<pair<int,int> > G[50001];
ii per,pereche;
int nod2,dist2;
int main()
{
f>>n>>m;
for(i=1;i<=m;i++)
{
f>>a>>b>>c;
G[a].push_back(ii(b,c));
}
for(i=1;i<=n;i++)
d[i]=1000000005;
Q.push(ii(0,1));
d[1]=0;
while(!Q.empty())
{
per=Q.top();
Q.pop();
nod=per.second;
dist=per.first;
if(!ok[nod]&&dist<=d[nod])
{
ok[nod]++;
for(vector<pair<int,int> >::iterator it=G[nod].begin();it!=G[nod].end();it++)
{
pereche=*it;
nod2=pereche.first;
dist2=pereche.second;
if(d[nod2]>d[nod]+dist2)
{
d[nod2]=d[nod]+dist2;
Q.push(ii(d[nod2],nod2));
}
}
}
}
for(i=2;i<=n;i++)
{
if(d[i]!=1005)
g<<d[i]<<" ";
else
g<<"0 ";
}
g<<'\n';
return 0;
}