text = "Hello World!"
text = ''.join([chr((ord(character) - 65 + 13) % 26 + 65) if 65 <= ord(character) <= 90 else character for character in text])
text = ''.join([chr((ord(character) - 97 + 13) % 26 + 97) if 97 <= ord(character) <= 122 else character for character in text])
print(text)