#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int t;
  cin >> t;
  while (t--) {
    long long int n;
    cin >> n;
    long long int idx[2 * n + 1], chk = 2 * n;
    vector<long long int> coin;
    coin.push_back(0LL);
    for (long long int i = 1; i <= 2 * n; i++) {
      long long int x;
      cin >> x;
      idx[x] = i;
    }
    for (long long int i = 2 * n; i >= 1; i--) {
      if (idx[i] <= chk) {
        coin.push_back(chk - idx[i] + 1);
        chk = idx[i] - 1;
      }
    }
    long long int cost = n, coin_no = coin.size() - 1;
    long long int dp[coin_no + 1][cost + 1];
    memset(dp, 0, sizeof(dp));
    for (long long int i = 0; i <= coin_no; i++) dp[i][0] = 1;
    for (long long int i = 1; i <= coin_no; i++) {
      for (long long int j = 1; j <= cost; j++) {
        dp[i][j] = dp[i - 1][j];
        if (coin[i] <= j) dp[i][j] |= dp[i - 1][j - coin[i]];
      }
    }
    if (dp[coin_no][cost])
      cout << "YES" << endl;
    else
      cout << "NO" << endl;
  }
  return 0;
}
