N = input()
T = input()
A = map(int,raw_input().split())
dp = [[-1]*(T+1) for i in xrange(N)]
dp[0][A[0]] = ""
for i in xrange(1,N):
    for j in xrange(T):
    	if dp[i-1][j] == -1: continue
    	k=j+A[i]
        if k <= T: dp[i][k]=max(dp[i][k],dp[i-1][j]+"+")
        k=j*A[i]
        if k <= T: dp[i][k]=max(dp[i][k],dp[i-1][j]+"*")
print dp[N-1][T]