Cod sursa(job #593348)

Utilizator gramatovici_paulGramatovici Paul gramatovici_paul Data 2 iunie 2011 13:07:15
Problema Stramosi Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.51 kb
#include<stdio.h>

int n,m,i,j,poz,nr,x,a[250001][20],p,nl;

int main()
{
	freopen("stramosi.in","r",stdin);
	freopen("stramosi.out","w",stdout);
	scanf("%d%d",&n,&m);
	for(i=1;i<=n;++i)
		scanf("%d",&a[0][i]);
	p=1;
	while(p<=n)
	{
		p<<=1;
		nl++;
	}
	//nl--;
	for(i=1;i<=nl;++i)
		for(j=1;j<=n;++j)
			a[i][j]=a[i-1][a[i-1][j]];
	for(i=1;i<=m;++i)
	{
		scanf("%d%d",&x,&nr);
		poz=0;
		while(nr!=0)
		{
			if ((nr&1)==1)
				x=a[poz][x];
			poz++;
			nr>>=1;
		}
		printf("%d\n",x);
	}
}