#include <bits/stdc++.h>
using namespace std;
#define ll long long
int main(){
    int n;
    cin >> n;
    vector <int> arr(10);
    for(int i = 1, a;i <= 9;i++){
        cin >> a;
        arr[i] = a;
    }

    string s;
    for(int i = 1;i <= 9;i++)
        while(arr[i]--)
            s = (char)('0' + i) + s;
    
    cout << s << "\n";


    return 0;
}