#include <bits/stdc++.h>
using namespace std;
int main(){
	int n, k;
	cin >> n >> k;
	vector<int> a(n+1);
	for(int i=1; i<=n; ++i) cin >> a[i]; 
	for(int i=k+1; i<=n; ++i){
		cout << (a[i]>a[i-k]? "Yes" : "No") << endl;
	}
}