// No.1223 I hate Golf
package main

import (
	"fmt"
	"math"
)

func main() {
	var n, k, t float64
	fmt.Scan(&n, &k, &t)

	if math.Abs(n) <= (k * t) {
		fmt.Println("Yes")
	} else {
		fmt.Println("No")
	}
}