Cod sursa(job #953444)

Utilizator cnt_tstcont teste cnt_tst Data 26 mai 2013 09:22:53
Problema BFS - Parcurgere in latime Scor 50
Compilator cpp Status done
Runda Arhiva educationala Marime 0.44 kb
#include<fstream>
using namespace std;
ifstream f("bfs.in");
ofstream g("bfs.out");
int v[100000],c[100000],i,j,n,p,u,s,x,y,m;
char a[1000][1000];
int main()
{
	f>>n>>m>>s;
	for(i=1;i<=m;i++)
	{
		f>>x>>y;
		a[x][y]=1;
	}
	c[1]=s;
	v[s]=1;
	p=1;u=1;
	while(p<=u)
	{
		for(int i=1;i<=n;i++)
			if(a[c[p]][i]==1&&v[i]==0)
			{
				u++;c[u]=i;v[i]=v[c[p]]+1;
			}
		p++;
	}
	for(i=1;i<=n;i++)
		g<<v[i]-1<<" ";
	return 0;
}