from collections import deque

N = int(input())
T = int(input())
A = tuple(map(int, input().split()))
stk = deque()
visited = set()


def rec(i, x):
    if (i, x) in visited:
        return
    if i == N and x == T:
        res = ''.join(map(str, stk))
        print(res)
        exit()
    elif i == N or x > T:
        return

    stk.append('+')
    rec(i + 1, x + A[i])
    stk.pop()

    stk.append('*')
    rec(i + 1, x * A[i])
    stk.pop()

    visited.add((i, x))


rec(1, A[0])