#include<iostream>
#include<string>
#include<vector>
using namespace std;
int main() {
	int n;
	vector<int> a(9);
	cin >> n;
	for (int i = 0; i < 9; i++) cin >> a.at(i);
	for (int i = 8; i >= 0; i--) cout << string(a.at(i), '1' + i);
	cout << endl;
	return 0;
}