import java.util.*;

public class Main {
	public static void main (String[] args) {
    	Scanner sc = new Scanner(System.in);
    	int n = Math.abs(sc.nextInt());
    	int k = sc.nextInt();
    	long t = sc.nextInt();
    	if (n <= k * t) {
    	    System.out.println("Yes");
    	} else {
    	    System.out.println("No");
    	}
	}
}