Cod sursa(job #308500)

Utilizator Alexa_ioana_14Antoche Ioana Alexandra Alexa_ioana_14 Data 27 aprilie 2009 15:08:54
Problema Algoritmul lui Dijkstra Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.81 kb
#include<stdio.h>
#define N 50000
int *a[N],n,m,c[N],x[N],y[N],d[N],viz[N];
void bfs(int x0)
{
	int coada[N],x,y,p,u;
	p=u=0;
	coada[u++]=x0;
	viz[x0]=1;
	while (u!=p)
	{
		x=coada[p++];
		for (int i=1; i<=a[x][0]; ++i)
		{
			y=a[x][i];
			if (!viz[y])
			{
				viz[y]=1;
				c[y]+=c[x];
				coada[u++]=y;
			}
		}
	}
}
void citire()
{
	freopen("dijkstra.in","r",stdin);
	freopen("dijkstra.out","w",stdout);
	scanf("%d%d",&n,&m);
	for (int i=1; i<=m; ++i)
	{
		scanf("%d%d%d",&x[i],&y[i],&c[i]);
		++d[x[i]];
	}
	for (int i=1; i<=n; ++i)
	{
		a[i]= new int [1+d[i]];
		a[i][0]=0;
	}
	for (int i=1; i<=m; ++i)
	{
		a[x[i]][++a[x[i]][0]]=y[i];
		//a[y[i]][++a[y[i]][0]]=x[i];
	}
	bfs(1);
	for (int i=1; i<=n; ++i)
		printf("%d ",c[i]);
}
int main()
{
	citire();
	return 0;
}