with open("message.txt", "r") as file:
key = file.readline().strip()
message = file.read().strip()
for c in message:
if c.isalpha():
if c.islower():
print(chr(key.index(c.upper()) + ord('a')).lower(), end="")
else:
print(chr(key.index(c) + ord('A')), end="")
else:
print(c, end="")