Cod sursa(job #3304918)

Utilizator AlexPlesescuAlexPlesescu AlexPlesescu Data 28 iulie 2025 16:47:53
Problema Stramosi Scor 90
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.78 kb
#include <bits/stdc++.h>

using namespace std;
#define int long long int
#define pb push_back
const int N = 250005;

int n, k, m, up[N][21];
vector<int> g[N];

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    freopen("stramosi.in", "r", stdin);
    freopen("stramosi.out", "w", stdout);
    cin >> n >> m;
    for (int i = 1; i <= n; i++) {
        int giani;
        cin >> up[i][0];
        giani = up[i][0];
    }
    for (int j = 1; j <= 20; j++) {
        for (int i = 1; i <= n; i++) {
            up[i][j] = up[up[i][j - 1]][j - 1];
        }
    }
    while (m--) {
        int q, p;
        cin >> q >> p;
        for (int i = 20; i >= 0; i--) {
            if (p & (1ll << i)) {
                q = up[q][i];
            }
        }
        cout << q << '\n';
    }
}