#include<bits/stdc++.h>

using namespace std;

int main(){
	int n,k;
	cin>>n>>k;
	int a[n+1];
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	for(int i=k+1;i<=n;i++){
		if(a[i]>a[i-k])cout<<"Yes";
		else cout<<"No";
		cout<<'\n';
	}
	return 0;
}