// 

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

using ll = long long;

#define rep(i, n) for (int i=0; i<(int)(n); ++(i))
#define rep3(i, m, n) for (int i=(m); (i)<(int)(n); ++(i))
#define repr(i, n) for (int i=(int)(n)-1; (i)>=0; --(i))
#define rep3r(i, m, n) for (int i=(int)(n)-1; (i)>=(int)(m); --(i))
#define all(x) (x).begin(), (x).end()

const int INF = (int)(1e9);

int main() {
	int t0;
	cin >> t0;
	rep(i0, t0) {
		int m;
		cin >> m;
		vector<int> d(10);
		rep3(i, 1, 10) cin >> d[i];
		if (accumulate(all(d), 0) == 0) {
			cout << m << endl;
			continue;
		}
		string s;
		rep3(i, 1, 10) s += string(d[i], '0'+i);
		int ten = 0, tar = 1;
		ll x = 0;
		while (1) {
			int mval = (m - stoll(s+string(ten,'0')) % m) % m;
			if (mval < tar) {
				x = stoll(s+string(ten,'0')) + mval;
				break;
			}
			++ten;
			tar *= 10;
		}
		cout << x << endl;
	}
	return 0;
}