# 906. Super Palindromes

## Description

Let's say a positive integer is a **super-palindrome** if it is a palindrome, and it is also the square of a palindrome.

Given two positive integers `left`

and `right`

represented as strings, return *the number of super-palindromes integers in the inclusive range*

`[left, right]`

.

**Example 1:**

Input:left = "4", right = "1000"Output:4Explanation: 4, 9, 121, and 484 are superpalindromes. Note that 676 is not a superpalindrome: 26 * 26 = 676, but 26 is not a palindrome.

**Example 2:**

Input:left = "1", right = "2"Output:1

**Constraints:**

`1 <= left.length, right.length <= 18`

`left`

and`right`

consist of only digits.`left`

and`right`

cannot have leading zeros.`left`

and`right`

represent integers in the range`[1, 10`

.^{18}- 1]`left`

is less than or equal to`right`

.