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: iicicsscscc

Answer: cssc


Question: ssststyysyy

Answer: yysyy


Question: qkikkikkqkqqkiq

Answer:
kikkik