#include using namespace std; int main(){ double a,sum; double s,x; cin>>s>>x; for(a=7,sum=0;sum<(s-x);a*=0.98){ sum+=a; }

if((sum+a*0.98)>(s+x)){
	cout<<"n"<<endl;
}
else{
	cout<<"y"<<endl;
}
return 0;

}