import java.util.Scanner;

public class No218 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		
		int t1 = a/b;
		if(a%b != 0){
			t1++;
		}
		int t2 = a/c;
		if(a%c != 0){
			t2++;
		}

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

}