题解 | 整数与IP地址间的转换

import sys

bin_num = input()
int_num = int(input())

bin_list = bin_num.split(".")
result1 = (
    int(bin_list[0]) * (2 ** 24)
    + int(bin_list[1]) * (2 ** 16)
    + int(bin_list[2]) * (2 ** 8)
    + int(bin_list[3])
)

fist = int_num // (2 ** 24)
sec = (int_num - fist * (2 ** 24)) // (2 ** 16)
thd = (int_num - fist * (2 ** 24) - sec * (2 ** 16)) // (2 ** 8)
four = int_num % (2 ** 8)
result2 = f"{fist}.{sec}.{thd}.{four}"
print(result1)
print(result2)