پاسخ پرسش تعادل اعداد

def tape_equilibrium(a):
    head = a[0]
    tail = sum(a[1:])
    min_dif = abs(head - tail)

    for index in range(1, len(a) - 1):
        head += a[index]
        tail -= a[index]

        min_dif = min(min_dif, abs(head - tail))

    return min_dif