#include <iostream>
#include <vector>
using namespace std;
int main(){
    double a,b;cin>>a>>b;
    vector<double> A;
    A.push_back(a*b);
    a = 1-a;
    for(int i = 1; 3 > i; i++){
        A.push_back(A[i-1]+a*b);
        a = 1-a;
    }
    if(A[1]-A[0] < (A[2]-A[1])/2.0)cout << "YES" << endl;
    else cout << "NO" << endl;
}