instruction:
In this task you will be given a string and you should find the longest substring that is a palindrome. A palindrome is a string that is the same backwards as it is forwards. If the shortest possible palindrome is length 1 you should return the first character.
question:
cqdccqdqdqcq
answer:
cqdqdqc


question:
ssslwsswlws
answer:
lwsswl


question:
egegegzeeg
answer:

egege