#include<bits/stdc++.h>
using namespace std;
int main(){
	//freopen(".in","r",stdin);
	//freopen(".out","w",stdout);
	double x,s,a=7,ans=0;
	cin>>s>>x;
	for(int i=1;;i++){
		ans+=a;
		a*=0.98;
		if(ans>=s){
			if(a>=x){
				cout<<"n\n";
				return 0;
			}
			else{
				cout<<"y\n";
				return 0;
			}
		}
	}
	return 0;
}