n=int(input())
t=int(input())
a=map(int,input().split())
l=[(next(a),"")]
for i in a:l=[m for j,k in l for m in[(j*i,k+"*"),(j+i,k+"+")]if m[0]<=t]
r=" "*n
for i,j in l:
    if i==t and r<j:r=j
print(r)