using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp86
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] str = Console.ReadLine().Split();
            int n = int.Parse(str[0]);
            int k = int.Parse(str[1]);
            int t = int.Parse(str[2]);
            if (n < 0)
            {
                n *= -1;
            }
            if (n > k * t)
            {
                Console.WriteLine("No");
                Console.ReadLine();
            }
            else
            {
                Console.WriteLine("Yes");
                Console.ReadLine();
            }
        }
    }
}