题解 | #密码游戏#

try:
    num = int(input(''))
except Exception:
    print('输入的数字不正确')
else:
    numstr = str(num)
    numlist = []
    for i in numstr:
        tmp = str((int(i)+3)%9)
        numlist.append(tmp)
    for i in range(2):
        tmp = numlist[i]
        numlist[i] = numlist[i+2]
        numlist[i+2] = tmp

    lastnum =''.join(numlist)
    print(lastnum)