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.

Q: raaarrraraa

A: raaar
****
Q: sssyyyyysees

A: syyyyys
****
Q: dbdbdbddddd

A:
dbdbdbd
****