#include <bits/stdc++.h>
using namespace std;
#define ll long long
int main(){
  cin.tie(nullptr)->sync_with_stdio(false);
  ll N, T; cin >> N >> T;
  vector A(N, 0ll);
  for(auto& x: A) cin >> x;
  vector dp(N + 1, vector(T + 1, false));
  dp[N][T] = true;
  for(int i = N - 1; i >= 0; --i){
    for(int t = 1; t <= T; ++t) if(dp[i + 1][t]){
      if(0 <= t - A[i]) dp[i][t - A[i]] = true;
      if(t % A[i] == 0) dp[i][t / A[i]] = true;
    }
  }

  if(!dp[0][0]) cout << -1;
  else{
    string ans = "";
    ll s = A[0];
    for(int i = 1; i < N; ++i){
      if(s + A[i] <= T && dp[i + 1][s + A[i]]){
        ans += '+';
        s += A[i];
        continue;
      }
      if(s * A[i] <= T && dp[i + 1][s * A[i]]){
        ans += '*';
        s *= A[i];
        continue;
      }
      assert(false);
    }
    assert(s == T);
    cout << ans;
  }
  cout << endl;
  return 0;
}