题解 | 整数与IP地址间的转换

import sys

def ip2int(ip:str):
    bin_str = [bin(int(i))[2:].zfill(8) for i in ip.split('.')]
    return int(''.join(bin_str), 2)

def int2ip(val:int):
    res = []
    for i in range(3, -1, -1):
        d, rmd = divmod(val, 256**i)
        res.append(d)
        val = rmd
    return '.'.join([str(i) for i in res])


raw_input = []
for i,line in enumerate(sys.stdin):
    raw_input.append(line.strip())
    if i == 1:
        break

print(ip2int(raw_input[0]))
print(int2ip(int(raw_input[1])))