#include <bits/stdc++.h>

using namespace std;
using ll = long long;

void solve(){
    ll M, d, K;
    const ll inf = 2e18;
    string S="";
    cin >> M;
    for (int i=1; i<=9; i++){
        cin >> d;
        S += string(d, char(i+'0'));
    }
    S += string(9, '0');
    K = stoll(S);
    cout << (K+M-1)/M*M << endl;
}

int main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    int T;
    cin >> T;
    while(T){
        T--;
        solve();
    }

    return 0;
}