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Cod sursa(job #378496)
#include<stdio.h>
#include<vector>
#include<string.h>
#define pb push_back
#define mp make_pair
#define inf 50000001
using namespace std;
int main()
{
int n,m,i,a,b,c,d[50001],min,nod=0,j;
vector< pair<int,int> > v[50001];
char viz[50001];
FILE *f=fopen("dijkstra.in","r");
fscanf(f,"%i%i",&n,&m);
for(i=0;i<m;i++)
{
fscanf(f,"%i%i%i",&a,&b,&c);
v[a].pb(mp(b,c));
}
fclose(f);
d[1]=0;
for(i=2;i<=n;i++)
d[i]=inf;
memset(viz,0,sizeof(viz));
for(;;)
{
min=inf;
for(i=1;i<=n;i++)
{
if(viz[i]==0 && d[i]<min)
{
min=d[i];
nod=i;
}
}
if(min==inf)
break;
viz[nod]=1;
for(j=0;j<(int) v[nod].size();j++)
{
if(v[nod][j].second+d[nod]<d[v[nod][j].first])
d[v[nod][j].first]=v[nod][j].second+d[nod];
}
}
f=fopen("dijkstra.out","w");
for(i=2;i<=n;i++)
{
if(d[i]==inf)
d[i]=0;
fprintf(f,"%i ",d[i]);
}
fprintf(f,"%s","\n");
fclose(f);
return 0;
}