#include <iostream>

int main()
{
    float p, q;
    std::cin >> p >> q;
    
    float p1, p2;
    p1 = (1 - p) * q;
    p2 = p * q;
    
    std::cout << ((p1 < p2)? "YES":"NO") << std::endl;
    
    return 0;
}