def palindrome(slovo:str):
    a = slovo[::-1]
    if slovo == a:
        p = 1
    else:
        p = 0
    return p


def addition_upto_palindrome(line: str) -> int:
    if len(line) == 1:
        ans = 0
    elif palindrome(line) == 1:
        ans = 0
    else:
        right_ind = []
        i = 2
        while i <= len(line):
            if palindrome(line[:i]) == 1:
                right_ind.append(i)
                i += 1
            else:
                i +=1

        left_ind = []
        j = len(line) - 2
        while j >= 0:
            if palindrome(line[j:]) == 1:
                left_ind.append(j)
                j -= 1
            else:
                j -= 1

        if len(right_ind) != 0 and len(left_ind)!= 0 and len(line[:right_ind[-1]]) > len(line[left_ind[-1]:]):
            remein = len(line[:right_ind[-1]])
        elif len(right_ind) != 0 and len(left_ind)!= 0 and len(line[:right_ind[-1]]) < len(line[left_ind[-1]:]):
            remein = len(line[left_ind[-1]:])
        elif len(right_ind) == 0 and len(left_ind)!= 0:
            remein = len(line[left_ind[-1]:])
        elif len(right_ind) != 0 and len(left_ind)== 0:
            remein = len(line[:right_ind[-1]])
        elif len(right_ind) == 0 and len(left_ind) == 0 and len(line):
            remein = 1

        ans = len(line) - remein
    return ans