#include <bits/stdc++.h>

using namespace std;

int main(void)
{
	cin.tie(0);
	ios::sync_with_stdio(false);

	int tc;

	cin >> tc;

	while (tc--)
	{
		int n1, n2;
		int m;
		int res = 0;
		vector <int> v;

		cin >> n1 >> n2;
		cin >> m;
		for (int i = 0; i < m; i++)
		{
			int t;
			cin >> t;
			v.push_back(t);
		}
		sort(v.begin(), v.end());
		int sum1 = 0;
		int sum2 = 0;
		if (n1 < n2)
		{
			int temp = n1;
			n1 = n2;
			n2 = temp;
		}
		for (int i = 0; i < m; i++)
		{
			if (sum2 + v[i] > n2)
			{
				if (sum1 + v[i] <= n1)
				{
					res++;
					sum1 += v[i];
				}
			}
			else
			{
				if (i % 2 == 0)
				{
					sum1 += v[i];
				}
				else
				{
					sum2 += v[i];
				}
				res++;
			}
		}
		cout << res << '\n';
	}
	return 0;
}