#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
using ll=long long;
#define rep(i,n) for(int i=0;i<n;i++)
#define rrep(i,n) for(int i=(n)-1;i>=0;i--)
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
template<class T> bool chmax(T &a, T b){if (a < b){a = b;return true;} else return false;}
template<class T> bool chmin(T &a, T b){if (a > b){a = b;return true;} else return false;}

struct UnionFind {
    vector<int> par, siz;
    UnionFind(int n) : par(n,-1), siz(n,1) {}
    int find(int x){
        if (par[x] == -1) return x;
        else{
            par[x] = find(par[x]);
            return par[x];
        }
    }
    bool same(int x, int y){
        return find(x) == find(y);
    }
    int size(int x){
        return siz[find(x)];
    }
    void merge(int x, int y){
        x = find(x);
        y = find(y);
        if (x == y) return;
        if (siz[x] < siz[y]) swap(x,y);
        siz[x] += siz[y];
        par[y] = x;
    }
};

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N,Q;
    cin>>N>>Q;
    vector<int>p(N);
    UnionFind uf(N);
    rep(i,N){
        cin>>p[i];
        if(p[i]!=-1){
            p[i]--;
            uf.merge(i,p[i]);
        }
    }
    while(Q--){
        int a,b;
        cin>>a>>b;
        a--;
        b--;
        if(uf.same(a,b))cout<<"Yes"<<"\n";
        else cout<<"No"<<"\n";
    }
}