#include <bits/stdc++.h>
using namespace std;

int dp[51][123456],n,s;
vector<int> v;
bool can(int a){
  memset(dp,0,sizeof(dp));
  v[a+1]+=v[a];
  dp[a+2][v[a+1]]++;
  for(int i=a+2;i<n;i++){
    for(int j=s;j>=0;j--){
      dp[i+1][j+v[i]]+=dp[i][j];
      dp[i+1][j*v[i]]+=dp[i][j];
    }
  }
  v[a+1]-=v[a];
  return dp[n][s];
}


signed main(){
  cin>>n>>s;
  v.resize(n);
  for(int i=0;i<n;i++)cin>>v[i];
  for(int i=0;i<n-1;i++){
    if(can(i)){
      cout<<'+';
      v[i+1]+=v[i];
    }
    else{
      cout<<'*';
      v[i+1]*=v[i];
    }
  }
  cout<<endl;
}