#include <bits/stdc++.h>
using namespace std;
// #include <atcoder/all>
// using namespace atcoder;
using ll = long long;
#define reps(i, a, n) for(ll i = (a); i < (ll)(n); ++i)
#define rep(i,n) reps(i,0,n)
#define all(a) (a).begin(), (a).end();
#define debug(x) cerr << "\033[33m(line:" << __LINE__ << ") " << #x << ": " << x << "\033[m" << endl;

//なんかstd::vector<bool>の挙動を修正できるやつ

/* alias */
using ull = unsigned long long;
using ll = long long;
using vi = vector<int>;
using vl = vector<long>;
using vll = vector<long long>;
using vvi = vector<vi>;
using vvl = vector<vl>;
using vvll = vector<vll>;
using vs = vector<string>;
using pii = pair<int, int>;
//UnionFind木
// @see https://zenn.dev/reputeless/books/standard-cpp-for-competitive-programming/viewer/union-find
class UnionFind{
public:
    UnionFind() = default;
    // n 要素数
    explicit UnionFind(size_t n)
        : m_parentsOrSize(n, -1){}
    int root(int i){
        if (m_parentsOrSize[i] < 0) return i;
        // 経路圧縮
        return (m_parentsOrSize[i] = root(m_parentsOrSize[i]));
    }
    void unite(int a, int b){
        a = root(a); b = root(b);
        if(a != b){
            // 小さいほうが子になる
            if(-m_parentsOrSize[a] < -m_parentsOrSize[b]) swap(a,b);
            m_parentsOrSize[a] += m_parentsOrSize[b];
            m_parentsOrSize[b] = a;
        }
    }
    bool same(int a, int b){ return (root(a) == root(b));}
    // i が属するグループの要素数を返す
    int size(int i){return -m_parentsOrSize[root(i)];}
private:
    // m_parentsOrSize[i]は i の親,
    // ただし root の場合は (-1 * そのグループに属する要素数)
    vi m_parentsOrSize; // using vi = vector<int>
};

int main(){
    int n, q;
    cin >> n >> q;
    vi a(n);
    UnionFind uf(n);
    for(int i = 0; i < n; i++){
        cin >> a[i];
        if(a[i] != -1) {
            a[i]--;
            uf.unite(i,a[i]);
        }
    }

    rep(i, q){
        int x, y;
        cin >> x >> y;
        x--; y--;
        if(uf.same(x,y)) cout << "Yes\n";
        else cout << "No\n";
    }
}