A12201. Palindromic Magic

After learning some fancy algorithms about palindromes, Chouti found palindromes very interesting, so he wants to challenge you with this problem.

Chouti has got two strings $A$ and $B$ . Since he likes [palindromes](https://en.wikipedia.org/wiki/Palindrome), he would like to pick $a$ as some non-empty palindromic substring of $A$ and $b$ as some non-empty palindromic substring of $B$ . Concatenating them, he will get string $ab$ .

Chouti thinks strings he could get this way are interesting, so he wants to know how many different strings he can get.

The first line contains a single string $A$ ( $1 \le |A| \le 2 \cdot 10^5$ ).

The second line contains a single string $B$ ( $1 \le |B| \le 2 \cdot 10^5$ ).

Strings $A$ and $B$ contain only lowercase English letters.

The first and only line should contain a single integer — the number of possible strings.

In the first example, attainable strings are

- "a" + "a" = "aa",
- "aa" + "a" = "aaa",
- "aa" + "aba" = "aaaba",
- "aa" + "b" = "aab",
- "a" + "aba" = "aaba",
- "a" + "b" = "ab".

In the second example, attainable strings are "aa", "aaa", "aaaa", "aaaba", "aab", "aaba", "ab", "abaa", "abaaa", "abaaba", "abab", "ba", "baa", "baba", "bb".

Notice that though "a"+"aa"="aa"+"a"="aaa", "aaa" will only be counted once.