模拟（Python）

思路：超绝模拟题，写了一坨。题目大意就是只有第三位进行四舍五入，第二位和第一位只能进位

代码：

import sys
input = lambda: sys.stdin.readline().strip()

import math
inf = 10 ** 18

def I():
    return input()

def II():
    return int(input())

def MII():
    return map(int, input().split())

def GMI():
    return map(lambda x: int(x) - 1, input().split())

def LI():
    return input().split()

def LII():
    return list(map(int, input().split()))

def LFI():
    return list(map(float, input().split()))

fmax = lambda x, y: x if x > y else y
fmin = lambda x, y: x if x < y else y
isqrt = lambda x: int(math.sqrt(x))

'''

'''

def solve():
    a = list(map(int, I()))

    l = len(a)
    pre = 0
    for i in range(2, -1, -1):
        a[i] += pre
        if a[i] >= 5 and i == 2 or a[i] == 10 and i != 2:
            pre = 1
            if a[i] == 10:
                a[i] = 0
        else:
            pre = 0
    if pre == 1 and a[0] == 0:
        a = [1] + a
        l += 1

    print(f"{a[0]}.{a[1]}*10^{l - 1}")

t = 1
# t = II()
for _ in range(t):
    solve()