package yukicorder; import java.util.Scanner; public class No_218 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); double a = sc.nextDouble(); double b = sc.nextDouble(); double c = sc.nextDouble(); int normal = (int)Math.ceil(a/b); int success = (int)Math.ceil(a/c); if(2 * normal < 3 * success){ System.out.println("YES"); }else{ System.out.println("NO"); } } }