import java.util.Scanner;

public class No218 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner sc = new Scanner(System.in);
        double a = sc.nextDouble();
        double b = sc.nextDouble();
        double c = sc.nextDouble();
        
        int t1 = (int)Math.ceil(a/b);
        int t2 = (int)Math.ceil(a/c);

        if(t1*2 >= t2*3){
            System.out.println("Yes");
        }else
            System.out.println("No");
    }

}