#include<cstdio>
using namespace std;
int main()
{
	double s,x,m=7;
	scanf("%lf",&s,&x);
	while(s>x)
	{
		s-=m;
		m*=0.98;
	}
	x=x*2-(x-s);
	if(m>=x)printf("n");
	else printf("y");
}