#include <iostream>
#include <string>
using namespace std;

string plusORtimes(int A[], int l, int total) {
    string result;
    if (l == 1) {
        if (total == A[0]) {
            result = "";
        } else {
            result = "!";
        }
    } else if (total < 1) {
        result = "!";
    } else {
        if (total % A[l-1]) {
            result = plusORtimes(A, l - 1, total - A[l-1]) + "+";
        } else {
            string add = plusORtimes(A, l - 1, total - A[l-1]) + "+";
            string times = plusORtimes(A, l - 1, total / A[l-1]) + "*";
            int cmp = add.compare(times);
            if (cmp > 0) {
                result = add;
            } else {
                result = times;
            }
        }
    }
    //cout << "l: " << l << ", total: " << total << ", return " << result << endl;
    return result;
}

int main(void) {
    int N, Total;
    cin >> N >> Total;
    int A[N];
    for (int i = 0; i < N; i++) {
        cin >> A[i];
    }

    cout << plusORtimes(A, N, Total) << endl;
    
    return 0;
}