Cod sursa(job #1377792)

Utilizator vladrochianVlad Rochian vladrochian Data 6 martie 2015 02:41:12
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.56 kb
#include <fstream>
#include <cmath>
using namespace std;

const int kMaxN = 250005, kMaxLg = 18;

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

int N, M;
int str[kMaxLg][kMaxN];

int main() {
	fin >> N >> M;
	for (int i = 1; i <= N; ++i)
		fin >> str[0][i];
	for (int i = 1; i < kMaxLg; ++i)
		for (int j = 1; j <= N; ++j)
			str[i][j] = str[i - 1][str[i - 1][j]];
	while (M--) {
		int nod, s;
		fin >> nod >> s;
		for (int i = 0; i < kMaxLg; ++i)
			if (s & (1 << i))
				nod = str[i][nod];
		fout << nod << "\n";
	}
	return 0;
}