朕的爱妃评测机突发恶疾

#include<bits/stdc++.h>
using namespace std;
double s,x,v=7,sum=0;
int main()
{
	cin>>s>>x;
	while(1){
		sum+=v;
		v*=0.98;
		if(sum>=s-x-v) break;
	}
	if(x*2>=v) cout<<"y";
	else cout<<"n";
	return 0;
}