Cod sursa(job #688171)

Utilizator pandreeaePopescu Andreea pandreeae Data 23 februarie 2012 09:37:34
Problema Algoritmul lui Dijkstra Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.78 kb
#include <stdio.h>
using namespace std;

int main ()
{
	freopen ("dijkstra.in","r",stdin);
	freopen ("dijkstra.out","w",stdout);
	int a[500][500]={0}, d[500], s[500]={0}, t[500]={0}, n, m, x, y, z, i, j, min;
	scanf("%d%d",&n,&m);
	for (i=1;i<=n;i++)
		for(j=1;j<=n;j++)
			if (i!=j)
				a[i][j]=10000;
	for(i=1;i<=m;i++){
		scanf("%d%d%d",&x,&y,&z);
			a[x][y]=z;}
	for(i=1;i<=n;i++){
		d[i]=a[1][i];
		if (d[i]<10000)
		t[i]=1;}
	t[1]=0;
	d[1]=0;
	s[1]=1;
	for(i=1;i<n;i++){
		min=10000;
		for(j=1;j<=n;j++)
			if(s[j]==0 && d[j]<min){ 
				min=d[j]; 
				x=j;}
		if (min==10000) 
			break;
		else {
			s[x]=1;
			for (j=1;j<=n;j++)
				if(s[j]==0&&d[j]>d[x]+a[x][j]){
					d[j]=d[x]+a[x][j];
					t[j]=x;}}}
	for(i=1;i<=n;i++)
	printf("%d ",d[i]);
	return 0;
}