n = input()
total = input()
a = map(int, raw_input().split())

dic = {a[0]:''}

for value in a[1:]:
    next_dic = {}

    for key, operators in dic.iteritems():
        next_key = key + value

        if next_key <= total:
            next_operators = operators + '+'

            if next_key in next_dic:
                next_dic[next_key] = max(next_dic[next_key], next_operators)
            else:
                next_dic[next_key] = next_operators

        next_key = key * value
        if next_key <= total:
            next_operators = operators + '*'

            if next_key in next_dic:
                next_dic[next_key] = max(next_dic[next_key], next_operators)
            else:
                next_dic[next_key] = next_operators
    
    dic = next_dic

print dic[total]