#include <bits/stdc++.h>

using namespace std;

int main()
{
  int n;
  cin>>n;
  int arr[n+1];
  string s;
  for(int i = n;i>=0;i--)
  {
    cin>>arr[i];
  }
  bool isFirstTerm = true;
  for(int i = n;i>=0;i--)
  {
    int coeff = arr[i];
    if(coeff == 0)
    continue;
    if(coeff > 0 && !isFirstTerm)
    {
      s += "+";
    }
    else if(coeff<0)
    {
      s += "-";
    }
    if(abs(coeff) != 1||i == 0)
    {
      s += to_string(abs(coeff));
    }
    if(i>0)
    {
      s +="x";
      if(i>1)
      {
        s+="^"+to_string(i);
      }
    }
    isFirstTerm = false;
  }
   if(s.empty())
   {
    s = "0";
   }
   cout << s<<endl;
  return 0;
}