题解 | #简单密码#

def trans(x):
    if x == '1':
        x = '1'
    elif x in 'abc':
        x = '2'
    elif x in 'def':
        x = '3'
    elif x in 'ghi':
        x = '4'
    elif x in 'jkl':
        x = '5'
    elif x in 'mno':
        x = '6'
    elif x in 'pqrs':
        x = '7'
    elif x in 'tuv':
        x = '8'
    elif x in 'wxyz':
        x = '9'
    elif x == '0':
        x = '0'
    return x

ipt = input()
opt = ''
for i in ipt:
    if i.islower():
        opt += trans(i)
    elif i.isupper():
        if i != 'Z':
            opt += chr(ord(i)+1).lower()
        else:
            i = 'a'
            opt += i
    else:
        opt += trans(i)
print(opt)