#include <bits/stdc++.h>
using namespace std;
int main() {
  int T;
  cin >> T;
  while (T--) {
    int M;
    cin >> M;
    vector<int> d(10);
    for (int i = 1; i <= 9; i++) {
      cin >> d[i];
    }
    string S;
    for (int i = 1; i <= 9; i++) {
      for (int j = 1; j <= d[i]; j++) {
        S += (char)('0' + i);
      }
    }
    reverse(S.begin(), S.end());
    while ((int)S.size() < 18) {
      S += '0';
    }
    long long aaa = stoll(S);
    long long amari = aaa % M;
    if (amari == 0) {
      cout << aaa << endl;
      continue;
    }
    aaa += (M - amari);
    // cout << endl;
    cout << aaa << endl;
    // cout << "mod : " << aaa % M << endl;
    /**
    // cout << l << endl;
    const long long inf = 1000000000000000000;
    long long r = 
    **/
  }
  return 0;
}
// m * x <= inf
// iku junban
// 1 -> N - 1 -> N -> 1
// 1 -> N -> N - 1 -> 1