Given the task definition and input, reply with output. 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.

yfyfyffrrrrr

yfyfy
Given the task definition and input, reply with output. 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.

yfyfyffrrrrr

user
yfyfy
assistant
Given the task definition and input, reply with output. 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.

yfyfyffrrrrr

yfyfy