# import pypyjit
# pypyjit.set_param('max_unroll_recursion=-1')
from collections import *
from functools import *
from itertools import *
from heapq import *
import sys,math

input = sys.stdin.readline

N = int(input())
T = int(input())
A = list(map(int,input().split()))
X = defaultdict(int)
M = 10**5+5
called = [0]*M
called[A[0]]=1
for i in range(N-1):
    
    target = []
    for j in range(M):
        if called[j]==i+1:
            target.append((X[j],j))
    target.sort()
    n = len(target)
    a = A[i+1]
    for x,j in target:
        if j+a<M:
            if called[j+a]==i+2:
                continue
            called[j+a]=i+2
            X[j+a] = x
        if j*a<M:
            if called[j*a]==i+2:
                continue
            called[j*a]=i+2
            X[j*a] = x + (1<<N-2-i)
def f(x):
    if x=='0':
        return '+'
    else:
        return '*'
print(''.join(map(f,list(bin(X[T])[2:].zfill(N-1)))))