题解 | #求解立方根#

n=float(input())
temp=abs(n)

for i in range(int(temp*1000)):
    if i**3<int(temp*1000) and (i+1)**3>int(temp*1000):
        if int(temp*1000)-i**3 < (i+1)**3-int(temp*1000):
             if n<0:
                print("-%.1f" % (i/10))
             else:
                print("%.1f" % (i / 10))
        else:
            if n < 0:
                print("-%.1f" % ((i+1)/10))
            else:
                print("%.1f" % ((i+1)/10))