Minimum Characters required to make a String Palindromic


Problem Setter: glowing_glare Problem Tester: RAMBO_tejasv

Given an string A. The only operation allowed is to insert characters in the beginning of the string.

Find how many minimum characters are needed to be inserted to make the string a palindrome string.



Input Format

The only argument given is string A.

Output Format

Return the minimum characters that are needed to be inserted to make the string a palindrome string.

For Example

Input 1:
    A = "ABC"
Output 1:
    2
    Explanation 1:
        Insert 'B' at beginning, string becomes: "BABC".
        Insert 'C' at beginning, string becomes: "CBABC".

Input 2:
    A = "AACECAAAA"
Output 2:
    2
    Explanation 2:
        Insert 'A' at beginning, string becomes: "AAACECAAAA".
        Insert 'A' at beginning, string becomes: "AAAACECAAAA".
NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a doubt? Checkout Sample Codes for more details.
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