#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

#include <atcoder/dsu>

int main() {
  int n, q;
  cin >> n >> q;
  atcoder::dsu d(n);
  rep(i, n) {
    int p;
    cin >> p;
    if (p == -1) continue;
    d.merge(i, p - 1);
  }
  while (q--) {
    int a, b;
    cin >> a >> b;
    --a, --b;
    cout << (d.same(a, b) ? "Yes" : "No") << endl;
  }
  return 0;
}