题解 | #求解立方根#
求解立方根
http://www.nowcoder.com/practice/caf35ae421194a1090c22fe223357dca
s = float(input().strip())
i = 0.01
if s > 0:
while i*i*i <= s:
i += 0.01
print('%.1f' %i)
else:
s1 = - s
while i*i*i <= s1:
i += 0.01
print('%.1f' %-i)
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