Cod sursa(job #3208957)

Utilizator DumitrescuADumitrescuA DumitrescuA Data 1 martie 2024 16:48:20
Problema Algoritmul lui Dijkstra Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.53 kb
#include<fstream.h>
const int inf=2000000;
int a[250001][4],d[50001],n,k,ok=1,i,j,c,m;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
int main()
{
	f>>n>>m;int nr=1;
	for(i=1;i<=n;i++)d[i]=inf;d[1]=0;
	for(i=1;i<=m;i++)
	    {	f>>a[i][1]>>a[i][2]>>a[i][3];
	        if(a[i][1]==1)d[a[i][2]]=a[i][3];
		}
	while(ok && nr<n)
	{ok=0;
		for(k=1;k<=m;k++)
		{
			i=a[k][1];j=a[k][2];c=a[k][3];
			if(d[j]>d[i]+c){d[j]=d[i]+c;ok=1;}
		}
		nr++;
	}
for(i=2;i<=n;i++)if(d[i]<inf)g<<d[i]<<" ";
else g<<0<<" ";
return 0;
}