题解 | #简单密码#

line = input()
d = {"abc": 2, "def": 3, "ghi": 4, "jkl": 5, "mno": 6, "pqrs": 7, "tuv": 8, "wxyz": 9}
ans = ""
for ch in line:
    if ch.isdigit():
        ans += ch
    elif ch.isupper():
        # 密码中出现的大写字母则变成小写之后往后移一位
        ans += chr(ord("a") + (ord(ch.lower()) + 1 - ord("a")) % 26)
    else:
        for key in d:
            if ch in key:
                ans += str(d[key])
print(ans)