#include<bits/stdc++.h>
using namespace std;
double s,x,l,m=7.0;
int main(){
	scanf("%lf %lf",&s,&x);
	while(l<s){
		l+=m;
		m*=0.98;
	}
	l+=m;
	if(l<=s+x) printf("y");
	printf("n");
	return 0;
}