#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
using ll=long long;
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
template<class T> bool chmax(T &a, T b){if (a < b){a = b;return true;} else return false;}
template<class T> bool chmin(T &a, T b){if (a > b){a = b;return true;} else return false;}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    string ans="";
    int N;
    cin>>N;
    for(int i=1;i<=9;i++){
        int s;
        cin>>s;
        while(s--)ans=char('0'+i)+ans;
    }
    cout<<ans<<"\n";
}