Cod sursa(job #1482795)

Utilizator FairPlay94George Cioroiu FairPlay94 Data 7 septembrie 2015 22:12:33
Problema Stramosi Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.83 kb
#include <cstdio>
#include <iostream>

using namespace std;

int main() {
    freopen("stramosi.in", "r", stdin);
    freopen("stramosi.out", "w", stdout);

    ios::sync_with_stdio(false);
    cin.tie(0);

    int n, m;
    cin >> n >> m;
    int s[250005][20];
    for (int i = 0; i < 20; i++) {
        s[0][i] = 0;
    }
    for (int i = 1; i <= n; i++) {
        cin >> s[i][1];
    }
    for (int j = 2; j < 20; j++) {
        for (int i = 1; i <= n; i++) {
            s[i][j] = s[s[i][j - 1]][j - 1];
        }
    }
    for (int i = 1; i <= m; i++) {
        int q, p, r = 1;
        cin >> q >> p;
        while (q != 0 && p > 0) {
            if (p % 2 == 1) {
                q = s[q][r];
            }
            p /= 2;
            r++;
        }
        cout << q << "\n";
    }

    return 0;
}