题解 | #字符串加密#

import sys
KEY = input()
chars = input()
CHARs = []
list1 = [chr(i) for i in range(ord('a'), ord('z')+1)]
head = []
dic = {}
for i in range(len(KEY)):
    if KEY[i] not in head:
        head.append(KEY[i])

for i in range(len(list1)):
    if list1[i] not in head:
        head.append(list1[i])

for i, j in zip(list1, head):
    dic[i] =j

for i in chars:
    CHARs.append(dic[i])

print("".join(CHARs))