#include <iostream>
using namespace std;

#include <atcoder/dsu>

int main() {
    cin.tie(nullptr), ios::sync_with_stdio(false);
    int N, Q;
    cin >> N >> Q;
    atcoder::dsu uf(N);
    for (int i = 0; i < N; ++i) {
        int p;
        cin >> p;
        if (p >= 0) uf.merge(i, p - 1);
    }
    while (Q--) {
        int a, b;
        cin >> a >> b;
        cout << (uf.same(a - 1, b - 1) ? "Yes" : "No") << '\n';
    }
}