def convert_int_to_bin(dec_num):
    s = Stack()
    while dec_num > 0:
        rem = dec_num % 2
        s.push(rem)
        dec_num = dec_num // 2

    binary = ""
    while len(s.get_stack()) > 0:
        binary = binary + str(s.pop())

    return binary
def isBalancedSet(bracket_set):
    s = Stack()
    for bracket in bracket_set:
        cb = opening_brackets.get(bracket)
        ob = closing_brackets.get(bracket)
        if cb is not None:
            s.push(bracket)
        elif ob is not None:
            pb = s.pop()
            if ob == pb:
                continue
            else:
                return -1
        else:
            return None

    return -1 if len(s.get_stack()) > 0 else 1