n = input().strip() def palindrome(s, left, right): while left >= 0 and right len(s) and s[left] == s[right]: left -= 1 right += 1 return s[left + 1:right] res = "" for i in range(len(n)): s1 = palindrome(n, i, i) s2 = palindrome(n, i, i + 1) r...