题解 | #字符串加解密#

def addkey(s1):
    a = []
    for i in s1:
        if i.isalpha():
            if i.islower():
                if i =="z":
                    a.append(chr(ord(i)-25).upper())
                else:
                    a.append(chr(ord(i)+1).upper())
            if i.isupper():
                if i == "Z":
                    a.append(chr(ord(i)-25).lower())
                else:
                    a.append(chr(ord(i)+1).lower())
        if i.isdigit():
            if i == "9":
                a.append("0")
            else:
                a.append(str(int(i)+1))

    print("".join(a))
    
def delkey(s2):
    a = []
    for i in s2:
        if i.isalpha():
            if i.islower():
                if i =="a":
                    a.append(chr(ord(i)+25).upper())
                else:
                    a.append(chr(ord(i)-1).upper())
            if i.isupper():
                if i == "A":
                    a.append(chr(ord(i)+25).lower())
                else:
                    a.append(chr(ord(i)-1).lower())
        if i.isdigit():
            if i == "0":
                a.append("9")
            else:
                a.append(str(int(i)-1))

    print("".join(a))

    
    
if __name__ == "__main__":
    
    while True:
        try:
            s1 = input()
            addkey(s1)

            s2 = input()
            delkey(s2)
        except:
            break