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Cod sursa(job #414296)
#include<stdio.h>
FILE *f,*g;
long t[4][250500],c[50500],i,n,m,st[100000],dist[50500],y,z,nr,p,u,q,viz[50500],x,fin[50500];
int main()
{ f=fopen("dijkstra.in","r"); g=fopen("dijkstra.out","w");
fscanf(f,"%ld%ld",&n,&m);
for(i=1;i<=m;i++)
{ fscanf(f,"%ld%ld%ld",&x,&y,&z);
if(c[x]==0) { nr++; c[x]=nr; t[1][nr]=y; t[3][nr]=z; fin[x]=nr; }
else { nr++; t[2][fin[x]]=nr; t[1][nr]=y; t[3][nr]=z; fin[x]=nr; }
}
for(i=1;i<=n;i++)
dist[i]=1<<30;
p=u=1; st[1]=1; dist[1]=0;
while(p<=u)
{ q=c[st[p]];
viz[st[p]]=0;
while(q!=0)
{ if(dist[t[1][q]]>dist[st[p]]+t[3][q])
{ dist[t[1][q]]=dist[st[p]]+t[3][q];
if(!viz[t[1][q])
{
viz[t[1][q]]=1;u++; st[u]=t[1][q];
}
}
q=t[2][q];
}
p++;
}
for(i=2;i<=n;i++) fprintf(g,"%ld ",dist[i]);
fclose(g);
return 0;
}