from itertools import product
n = int(input())
tot = int(input())
a = list(map(int, input().split()))
for p in product(range(2), repeat=n-1):
    cur = a[0]
    for i in range(n - 1):
        if not p[i]:
            cur += a[i + 1]
        else:
            cur *= a[i + 1]
    if cur == tot:
        print(''.join('+' if not op else '*' for op in p))
        break