using System;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var input = Console.ReadLine().Split().Select(int.Parse).ToArray();
        var N = input[0];
        var K = input[1];
        var T = input[2];

        if (Math.Abs(N) <= K * T) Console.WriteLine("Yes");
        else Console.WriteLine("No");
    }
}