#include<iostream>
#include<cmath>

using  namespace std;

int main(){
    int a,b,c;
    cin >> a >> b >> c;
    int ex1 = (a+b-1)/b;
    int ex2 = (a+c-1)/c;
    if(2*ex1 >= 3*ex2) cout << "Yes" << endl;
    else cout << "No" << endl;
    return 0;
}