#include <bits/stdc++.h>
using namespace std;

int main() {
    int N;
    cin >> N;
    vector<int>tmp(9);
    string S = "";
    for(int i = 0; i < 9; i++) {
        cin >> tmp[i];
        S += string(tmp[i],(char)('0'+i+1));
    }
    reverse(S.begin(),S.end());
    cout << S << endl;
}