import math
def main(num):
    return math.factorial(num)

class Solution:
    def minAnagramLength(self, s: str) -> int:
        left=0
        ans=[]
        right=len(s)-1
        while left<right:
            if s[left]==s[right]:
                ans.append (s[left])
                left+=1
                right-=1
            elif s[left]!=s[right]:
                ans.append(s[left])
                ans.append(s[right])

                left+=1
                right-=1
        return (len(ans))