题解 | #整数与IP地址间的转换#

def ip_num(ip):
    ipl=map(int,ip.split("."))
    l=""
    for i in ipl:
        a=""
        while 1:
            y=i%2
            s=i//2
            if s==0:
                a+=str(y)
                break
            a+=str(y)
            i=s
        l+=("0"*8+a[::-1])[-8:]
    num=0
    for x,y in enumerate(l):
        num+=int(y)*2**(len(l)-x-1) 
    return num
def num_ip(num:int):
    x=""
    while 1:
        y=num%2
        s=num//2
        x+=str(y)
        if s==0:
            break
        num=s
    l="0"*32
    l+=x[::-1]
    l=l[-32:]
    ip=[]
    for i in range(0,32,8):
        n=l[i:i+8]
        num=0
        for x,y in enumerate(n):
            num+=int(y)*2**(len(n)-x-1) 
        ip.append(str(num))
    ip=".".join(ip)

    return ip

while 1:
    try:
        ip=input()
        num=int(input())
        print(ip_num(ip))
        print(num_ip(num))
    except:
        break