import collections


def finder2(l1, l2):
    """
    Find the missing element in a non-python specific approach.
    """
    count = collections.defaultdict(int)

    for num in l2:
        count[num] += 1

    for num in l1:
        if count[num] == 0:
            return num
        else:
            count[num] -= 1

    return None