题解 | #求解立方根#

知识点：需要判断为负数时，按照正数求立方根后变为负数:-((-num)**(1/3));

num = float(input())
if num >= 0:
    n= num**(1/3)
else:
    n= -((-num)**(1/3))
print('{0:.1f}'.format(n))