#define _USE_MATH_DEFINES
 
#include <iostream>
#include <iomanip>
#include <sstream>
 
#include <algorithm>
#include <cmath>
 
#include <string>
//#include <array>
#include <list>
#include <queue>
#include <vector>
#include <complex>
#include <set>
#include <map>
 
/////////
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define P(p) cout<<(p)<<endl;
 
#define PII pair<int,int>
/////////
typedef long long LL;
typedef long double LD;
/////////
using namespace::std;
/////////
int N;
int total;
int A[50];

string solve(int tot,int n){
	if( tot > total ){
		return "";
	}
	string res = "";

	{
		if( n == N - 2 ){
			if( total == tot+A[n+1] ){
				return "+" + res;
			}
			if( total == tot*A[n+1] ){
				return "*" + res;
			}
		}else{
			res = solve( tot+A[n+1],n+1 );
			if( res != "" ){
				return "+" + res;
			}
			res = solve( tot*A[n+1],n+1 );
			if( res != "" ){
				return "*" + res;
			}
		}
	}
	return "";
}

int main(void){
    std::cin.tie(0); 
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed;//
    //cout << setprecision(16);//
	
	cin>>N>>total;
	rep(i,N){//[0-N) 0ori N個
		cin>>A[i];
	}
	string ans = "";
	ans = solve(A[0],0);
	cout << ans << endl;
	return 0;
}