alphabet=list('abcdefghijklmnopqrstuvwxyz')

def get_key(message, key):
    if len(key) < len(message):
        key += message[:len(message)-len(key)]
    elif len(key) > len(message):
        key = key[:len(message)-len(key)]
    return key

def Encrypt(message, key):
    encode_message=''
    key = get_key(message, key)
    for i in range(len(message)):
        encode_message+=alphabet[(alphabet.index(message[i]) + alphabet.index(key[i]))%len(alphabet)]
    print("3ncryp7or> " + encode_message)


message = input("3ncryp7or> 3nt3r 7he m3ss4ge:\n>")
key = 'h4rdf0rk'
Encrypt(message, key)