def toint(s):
	res = 0
	d = 4
	for i in reversed(range((len(s) + d - 1) // d)):
		block = s[-d*(i+1):-d*(i)]
		if i == 0: block = s[-d*(i+1):]
		res *= 10 ** d
		res += int(block)
	return res

a, p, q = [toint(x) for x in input().split()]
b0 = p + q
c0 = p * q
ok = b0 ** 2 > a * c0
print("Yes" if ok else "No")