using System;
using System.Linq;

class Program
{
    static void Main()
    {
        var inp = Console.ReadLine().Split().Select(long.Parse).ToArray();
        var N = Math.Abs(inp[0]);
        var K = inp[1];
        var T = inp[2];
        var action = K * T;

        if(N >= action)
        {
            Console.WriteLine("No");
        }
        else
        {
            Console.WriteLine("Yes");
        }
    }
}