#include<bits/stdc++.h>
using namespace std;

int main(){
    double s,x,num=7,sum=0;
    cin>>s>>x;
    while(sum<s){
		sum+=num;
		num=num*0.98;
	}
	if(num*0.98>x)
	    cout<<'n';
	else
	    cout<<"y";
	return 0;
}