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Problems > Count Palindromic Substrings

Count Palindromic Substrings

Difficulty: 1500 2000 ms 128 MB

strings

Count all substrings of S that are palindromes (occurrences count separately, so aaa has 6).

Input: one line with the string S.

Output: the number of palindromic substrings.

Constraints:

  • 1 ≤ |S| ≤ 1000
  • lowercase letters

Sample Tests

Input 1
aaa
Output 1
6
Input 2
abc
Output 2
3

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