题解 | #整数与IP地址间的转换#

while True:
    try:
        ip, long = input(), int(input())
        # 将ip地址分段
        nums = list(map(int, ip.split('.')))
        # 将每段转换成8位二进制
        res = ''
        for n in nums:
            temp = bin(n).replace('0b', '')
            res += (8 - len(temp)) * '0' + temp # 不足8位向前补'0'
        # 输出十进制整数
        print(int(res, 2))
        # 将十进制的IP地址转成二进制
        bstr = bin(long).replace('0b', '')
        bstr = (32 - len(bstr)) * '0' + bstr # 不足32位向前补'0'
        lst = []
        i = 0
        while i + 8 <= len(bstr):
            lst.append(bstr[i:i+8])
            i += 8
        # 输出IP地址
        print('.'.join([str(int(x, 2)) for x in lst]))
    except:
        break