#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define rep(i, a, n) for (int i = a; i <= n; i++)
#define pb push_back
#define fi first
#define se second
#define sz(x) x.size()
#define lowbit(x) (x & (-x))
#define all(x) x.begin(), x.end()
#define inf 0x3f3f3f3f3f3f3f3f
#define int long long
#define pai 3.14
#define QF ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
// #define width cout << ""
using ll = long long;
using PII = pair<int, int>;
using LD = long double;
mt19937_64 rnd(chrono::duration_cast<chrono::nanoseconds>(chrono::system_clock::now().time_since_epoch()).count());
constexpr int N = 3e5 + 10;
map<int, int> mp;
int a[N], b[N];
void printer(list<int> v)
{
    cout << endl;
    for (auto x : v)
    {
        cout << x << " ";
    }
    cout << endl;
}
bool check(list<int> l)
{
    int cnt = 1;
    for (auto x : l)
    {
        if (x != b[cnt])
            return false;
        ++cnt;
    }
    return true;
}
void solve(int caseT)
{
    int n;
    cin >> n;
    list<int> l;
    set<PII> vis;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
        l.push_back(a[i]);
    }
    for (int i = 1; i <= n; i++)
    {
        cin >> b[i];
        mp[b[i]] = i;
    }
    int cnt = 0;
    while (true)
    {

        list<int>::iterator it = l.begin();
        list<int>::iterator it2 = ++l.begin();
        list<int>::iterator it3 = --l.end();
        if (cnt >= n)
            break;
        if (mp[*(it2)] < mp[*(it)])
        {
            vector<int> v;
            while (it2 != l.end())
            {
                // cnt++;
                v.push_back(*it2);
                auto it4 = it2++;
                // cout << "这是" << (*it2) << endl;

                if (it2 == l.end() || mp[*(it4)] != mp[*(it2)] - 1)
                {
                    // cout << "退出了" << endl;
                    break;
                }
            }
            bool flag = false;
            if (it2 == l.end())
                flag = true;
            auto pos = ++l.begin();
            for (auto x : v)
            {
                cout << 2;
                l.push_back(x);
                pos = l.erase(pos);
            }
            cnt = 0;
            if (flag)
            {
                cout << 1;
                return;
            }
        }
        else
        {
            cnt++;
            l.push_back(*it);
            l.erase(it);
            cout << 1;
        }
        // printer(l);
    }
}
signed main()
{
    QF;
    int T = 1;
    cin >> T;
    for (int i = 1; i <= T; i++)
    {
        solve(i);
        cout << endl;
    }
}