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Cod sursa(job #676575)
#include<cstdio>
#define DN 50005
#define CIC 99999999
int n, m, s[DN], d[DN], p[DN];
FILE *f=fopen("dijkstra.in", "r");
FILE *g=fopen("dijkstra.out", "w");
struct graf
{
int nod1, nod2, c;
graf *urm;
}*a[DN];
void NO_TO_ACTA()
{
for(int i=2; i<=n; ++i)
d[i]=CIC;
for(int i=1; i<=m; ++i)
{
int x, y, c;
fscanf(f, "%d%d%d", &x, &y, &c);
graf *q = new graf;
q->nod1=x;
q->nod2=y;
q->c=c;
q->urm=a[1];
a[1]=q;
if(x==1)
d[y]=c;
}
}
/**
void afis()
{
for(int i=1; i<=n; i++)
{
graf *q=a[i];
fprintf(g, "%d: ", i);
while(q!=NULL)
{
fprintf(g, "%d ", q->nod);
q=q->urm;
}
fprintf(g, "\n");
}
}**/
int main()
{
fscanf(f, "%d%d", &n, &m);
NO_TO_ACTA();
//afis();
bool ok=1; int i=1;
while(ok)
{
graf *q;
q=a[i]; i++; ok=0;
while(q!=NULL)
{
if(d[q->nod2]>d[q->nod1]+q->c)
{
d[q->nod2]=d[q->nod1]+q->c;
ok=1;
}
q=q->urm;
}
}
for(int i=2;i<=n;i++)
if(d[i]!=CIC)
fprintf(g, "%d ", d[i]);
else
fprintf(g, "0 ");
}