#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001



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