题解 | #字符串加密#

while True:
    try:
        key=input().lower()
        plaintext=input()
        lower_al,upper_al='abcdefghijklmnopqrstuvwxyz','ABCDEFGHIJKLMNOPQRSTUVWXYZ'
        l1=lower_al+upper_al
        l2a=key+lower_al+key.upper()+upper_al
        l2=''
        for i in l2a:
            if i not in l2:
                l2+=i
        ciphertext=''
        for i in plaintext:
            ciphertext+=l2[l1.find(i)]
        print(ciphertext)

    except:
        break