lsd3 11

import math


def pal(n):
    digits = int(math.log10(n)) + 1

    if digits == 1 or n == 0:
        return True

    last = n % 10
    first = n // (10 ** (digits - 1))

    if first != last:
        return False

    return pal((n // (10 ** (digits - 1))) % 10)