class Program
{
    static void Main(string[] args)
    {
        string[] input = Console.ReadLine()!.Split(' ');
        decimal target = decimal.Parse(input[0]);
        decimal move = decimal.Parse(input[1]);
        decimal timeLimit = decimal.Parse(input[2]);

        if (target < 0)
        {
            move *= -1;
            if (move * timeLimit <= target)
            {
                Console.WriteLine("Yes");
            }
            else
            {
                Console.WriteLine("No");
            }
        }
        else
        {
            if (move * timeLimit >= target)
            {
                Console.WriteLine("Yes");
            }
            else
            {
                Console.WriteLine("No");
            }
        }
    }
}