#include <bits/stdc++.h>
using namespace std;

struct UnionFind {
    vector<int> par;
    vector<int> size;
    UnionFind() {}
    UnionFind(int n) {
        par.resize(n);
        size.resize(n,1);
        for(int i = 0; i < n; i++) {
            par[i] = i;
        }
    }
    int find(int x) {
        if(par[x] == x) {
            return x;
        }
        return par[x] = find(par[x]);
    }
    bool same(int x, int y) {
        return find(x) == find(y);
    }
    int consize(int x) {
        return size[find(x)];
    }
    bool unite(int x, int y) {
        x = find(x);
        y = find(y);
        if(x == y) {
            return false;
        }
        if(size[x] > size[y]) {
            swap(x,y);
        }
        par[x] = y;
        size[y] += size[x];
        return true;
    }
};

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N,Q;
    cin >> N >> Q;
    UnionFind uf(N);
    for(int i = 0; i < N; i++) {
        int P;
        cin >> P;
        P--;
        if(P >= 0) uf.unite(i,P);
    }
    for(int i = 0; i < Q; i++) {
        int a,b;
        cin >> a >> b;
        a--;
        b--;
        cout << ((uf.same(a,b))?"Yes":"No") << "\n";
    }
}