def encrypt(letter):
    return chr(ord(letter) + 1)
    
def decrypt(letter):
    return chr(ord(letter) - 1)    


plain_text = input("Type text to be encrypted: ")

encrypted_text = ""

for letter in plain_text:
    encrypted_text = encrypted_text + encrypt(letter)
 
print(encrypted_text)

plain_text = ""

for letter in encrypted_text:
    plain_text = plain_text + decrypt(letter)
    
print(plain_text)    

print(ord("A"),ord("a"))