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Cod sursa(job #881981)
#include <fstream>
#define pinf 1<<30
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
struct nod
{
int urm,cost,ant;
nod *next;
};
nod *p,*l[50001];
int x,y,i,j,n,nods,viz[50001],d[50001],t[50001],minn,poz,c,m,ok,st,w,z;
int main()
{
fin>>n>>m;
for(i=1;i<=m;++i)
{
fin>>x>>y>>c;
p=new nod;
p->next=l[x];
p->urm=y;
p->ant=x;
p->cost=c;
l[x]=p;
if(x==1)
{
d[y]=c;
t[y]=x;
if(d[y]<minn||minn==0)
{
minn=d[y];
poz=y;
}
}
}
viz[1]=1;
ok=1;
st=poz;
for(i=1;i<=n;++i)
if(d[i]==0&&i!=1)
d[i]=pinf;
while(ok==1)
{
viz[st]=1;
p=new nod;
p=l[st];
while(p)
{
z=p->urm;
w=p->ant;
c=p->cost;
if(viz[z]==0)
if(d[w]+c<d[z])
{
d[z]=d[w]+c;
t[z]=w;
}
p=p->next;
}
minn=0;
poz=0;
ok=0;
for(i=2;i<=n;++i)
if(viz[i]==0&&(d[i]<minn||minn==0))
{
minn=d[i];
st=i;
ok=1;
}
}
for(i=2;i<=n;++i)
if(d[i]==pinf)
fout<<0<<" ";
else
fout<<d[i]<<" ";
return 0;
}