Cod sursa(job #622048)

Utilizator dtoniucDaniel Toniuc dtoniuc Data 17 octombrie 2011 11:48:48
Problema Stramosi Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.67 kb
#include<iostream>
#include<fstream>
using namespace std;
int a[20][250001];
int main()
{
	int n,m,p,q;
	freopen ("stramosi.in","r",stdin);
	freopen ("stramosi.out","w",stdout);
	scanf ("%d%d",&n,&m);
	for(int i=1;i<=n;i++)
		scanf("%d",&a[0][i]);
	for(int i=1;i<=19;i++)
		for(int j=1;j<=n;j++)
			a[i][j]=a[i-1][a[i-1][j]];
	/*for(int i=0;i<=19;i++)
	{
		for(int j=1;j<=n;j++)
			printf("%d ",a[i][j]);
		printf("\n");
	}*/
	for(int i=1;i<=m;i++)
	{
		int nr=524288,p2=19;
		scanf("%d%d",&q,&p);
		while(p)
		{
			if(p>=nr) 
			{
				p-=nr;
				q=a[p2][q];
			}
			else 
			{
				nr/=2;
				p2--;
			}
		}
		printf("%d\n",q);
	}
	return 0;
}