Cod sursa(job #864148)

Utilizator deea101Andreea deea101 Data 24 ianuarie 2013 18:21:13
Problema Stramosi Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.47 kb
#include <fstream>
using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int t[18][250001],logi[250001];
int main()
{
	int n,m,i,j,x,y;
	f>>n>>m;
	for(i=1;i<=n;i++)
	{
		f>>t[0][i];
	}
	for(i=1; (1<<i)<=n; i++)
		for(j=1;j<=n;j++)
			t[i][j]=t[i/2][t[i/2][j]];
	
	logi[1]=0;
	for(i=2;i<=n;i++)
		logi[i]=logi[i/2]+1;
	for(i=1;i<=m;i++)
	{
		f>>x>>y;
		while(y)
		{
			x=t[logi[y]][x];
			y=y-(1<<logi[y]);
		}
		g<<x<<'\n';
	}
}