i = [int(input()) for _ in range(3)]
i[1] += i[0] // i[1] + (1 if i[0] % i[1] > 0 else 0)
i[2] += i[0] // i[2] + (1 if i[0] % i[2] > 0 else 0)
print("YES" if i[1] * 2 - i[2] * 3 > 0 else "NO")