#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define fi first
#define se second
#define all(a) a.begin(),a.end()
int main(){
  int n;
  cin >> n;
  vector<int> num(9);
  for(int &i:num) cin >> i;

  for(int i=9; i>=0; --i){
    for(int j=0; j<num[i]; ++j){
      cout << i+1;
    }
  }
  cout << "\n";
  return 0;
}