Cod sursa(job #752479)

Utilizator Stefex09Stefan Teodorescu Stefex09 Data 28 mai 2012 18:13:37
Problema Stramosi Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.52 kb
#include<iostream>
#include<fstream>

using namespace std;

ifstream in("stramosi.in");
ofstream out("stramosi.out");

int d[18][250010];

int main()
{
	int i, n, q, nod, pas, j;
	
	in >> n >> q;
	
	for(i = 1; i <= n; i++)
		in >> d[0][i];
	
	for(i = 1; (1 << i) <= n; ++i)
		for(j = 1; j <= n; ++j)
			d[i][j] = d[i - 1][ d[i - 1][j] ];
		
	while(q--){
		in >> nod >> pas;
		
		i = 0;
		
		while(pas){
			if(pas & 1) nod = d[i][nod];
			if(!nod) break;
			++i;
			pas >>= 1;
		}
			
		out << nod << "\n";
	}
	
	return 0;
}