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

namespace y1223
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] str = Console.ReadLine().Split(' ');
            long n = long.Parse(str[0]);
            long k = long.Parse(str[1]);
            long t = long.Parse(str[2]);
            if(n < 0 )
            {
                n *= -1;
            }
            string result = "No";
            if(k * t >= n)
            {
                result = "Yes";
            }
            Console.WriteLine(result);
        }
    }
}