#include<iostream>
#include<vector>
#include<algorithm>
#include<cstring>
#include<cassert>
#include<cmath>
#include<ctime>
#include<iomanip>
#include<numeric>
#include<stack>
#include<queue>
#include<map>
#include<unordered_map>
#include<set>
#include<unordered_set>
#include<bitset>
#include<random>
#include<functional>
#include<utility>
using namespace std;
void solve()
{
	int M;
	cin >> M;
	long long ans = 0;
	for(int i = 1;i <= 9;i++)
	{
		int d;
		cin >> d;
		for(;d--;) ans = ans*10 + i;
	}
	ans *= (int)1e9;
	if(ans%M == 0);
	else
	{
		ans += M - ans%M;
	}
	cout << ans << "\n";
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tt = 1;
	cin >> tt;
	while(tt--) solve();
}