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Cod sursa(job #679119)
#include <fstream>
using namespace std;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
unsigned m,n,a,b,c,i,negr[50005],alb[50005];
struct nod{
unsigned x,cost;
nod *urm;
}*v[50005];
nod *p;
int main()
{
f>>n>>m;
for(i=1;i<=m;i++)
{
p=new nod;
f>>a>>b>>c;
p->x=b;
p->cost=c;
p->urm=v[a];
v[a]=p;
}
bool ok=true;
while (ok)
{
ok=false;
for(i=1;i<=n;i++)
if((i==1||alb[i])&&!negr[i])
{
negr[i]=1;
p=v[i];
while(p)
{
if((alb[p->x]==0&&((p->x)!=1))||alb[p->x]>(p->cost+alb[i]))
alb[p->x]=alb[i]+p->cost;
p=p->urm;
}
ok=true;
}
}
for(i=2;i<n;i++)
g<<alb[i]<<' ';
g<<alb[n]<<'\n';
f.close();
g.close();
return 0;
}