#include<stdio.h>
#include<algorithm>
using namespace std;
int main(){
	double a,b;
	scanf("%lf%lf",&a,&b);
	double p1=(1.0-a)*b;
	double p2=a*(1.0-b)*b;
	if(p1<p2)printf("YES\n");
	else printf("NO\n");
}