def main():
    """ main """
    N = int(input())
    TOTAL = int(input())
    AS = list(map(int, input().split()))

    # 演算子文字列, result
    q = [('', AS[0])]

    for optstr, total in q:
        if len(optstr) == N-1 and total == TOTAL:
            print(optstr)
            break
        elif len(optstr) == N-1:
            continue

        cur_a = AS[len(optstr)+1]

        if total+cur_a <= TOTAL:
            q.append((optstr + '+', total+cur_a))
        if total*cur_a <= TOTAL:
            q.append((optstr + '*', total*cur_a))

main()