No Plagiarism

Alice and Bob found the "key answer" for their next exam. The "key answer" is a string which when written in one's answer, gets full marks. Now, Alice and Bob being in a hurry, were not able to understand it. So, they decided to plagiarise by following a specific strategy: - Alice will write the "key answer" in the beginning and at the end of her answer (overlapping of the "key answer" is also po