题解 | 取近似值

import sys

n = 5
x = input()
try:
    x1,x2 = map(int,x.split('.'))
    x3 = str(x2) + "0"*(n-len(str(x2)))
    if int(x3) < 50000:
        x1 = x1
    else:
        x1 += 1
except:
    x1 = x
print(x1)