def my_encode(message):
    encoded_message = ''
    for char in message:
        encoded_message += chr(ord(char) + 7)
    return encoded_message


def my_decode(message):
    decoded_message = ''
    for char in message:
        decoded_message += chr(ord(char) - 7)
    return decoded_message


message = "Witam"
encoded = my_encode(message)
decoded = my_decode(encoded)

print(f" Encoded: {encoded}")
print(f"Decoded: {decoded}")