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:
rmrmmyryrmymmm
answer:
rmr


question:
rfrffororffo
answer:
rfr


question:
tfqtqftfttttf
answer:

tfqtqft