import random
import string


def encode(secret, step):
    output = ""
    for i in secret:
        output = output + i
        for j in step:
            output = output + random.choice(string.ascii_lowercase)
    return output


def decode(code, step):
    return code[::step]


def main():
    secret = input("Enter a secret word")
    step = int(input("Enter a positive integer"))
    code = encode(secret, step)
    print("Your code is:")
    print(code)
    print()
    decoded = decode(code, step)
    print("I can decode it back to:")
    print(decoded)


main()