#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;
using mint = modint998244353;

int main() {
  int N, Q; cin >> N >> Q;
  dsu uf(N);
  for (int i = 0; i < N; i++) {
    int p; cin >> p; p--;
    if (p >= 0) uf.merge(i, p);
  }
  while (Q--) {
    int a, b; cin >> a >> b;
    a--, b--;
    cout << (uf.same(a, b) ? "Yes": "No") << endl;
  }
  return 0;
}