def calculate(count, num, gross, op):
    if op == '+':
        dp[num + gross] = dp[gross] + '+'
        gross += num
    else:
        dp[num * gross] = dp[gross] + '*'
        gross *= num

    if count >= N - 1:
        return
    if dp[total] == '' or len(dp[total]) < N - 1:
        calculate(count + 1, nums[count + 1], gross, '+')
    if dp[total] == '' or len(dp[total]) < N - 1:
        calculate(count + 1, nums[count + 1], gross, '*')

N = int(input())
total = int(input())
nums = list(map(int, input().split()))
dp = ['' for i in range(10000)]

calculate(1, nums[1], nums[0], '+')
if dp[total] == '' or len(dp[total]) < N - 1:
    calculate(1, nums[1], nums[0], '*')
    
print(dp[total])