题解 | #取近似值#

# -*-coding:utf-8-*-
import string
while True:
    try:
        intf = float(input())
        int_i = int(intf)
        flt_i = intf-int_i
        if flt_i < 0.5:
            print(int_i)
        else:
            print(int_i+1)

    except:
        break