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

typedef long long ll;

int main() {
    int N;
    cin >> N;
    vector<int> c(9);
    rep(i, 0, 9) cin >> c[i];
    rep(i, 0, 9) {
        rep(j, 0, c[8 - i]) cout << 9 - i;
    }
    cout << endl;
}