#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)

int c[10];

signed main(){
  int n;cin>>n;
  rep(i,9) cin>>c[i];
  for(int i=9;i>=0;i--){
    rep(j,c[i]){
      cout<<i+1;
    }
  }
  cout<<endl;
  return 0;
}