import numpy as np

d = int(input())
for _ in range(d):
	n1, n2 = map(int, input().split())
	m = int(input())
	A = sorted(map(int, input().split()))

	dp = np.array([[-1 for j in range(n1 + 1)] for i in range(m + 1)])
	dp[0][0] = 0	#何で0なんだろう

	sigma = 0
	ans = 0

	for i in range(m):
		for j in range(n1 + 1):
			if 0 <= dp[i][j]:
				ans = max(ans, dp[i][j])

				jj = sigma - j

				if j + A[i] <= n1:
					dp[i + 1][j + A[i]] = dp[i][j] + 1
				if jj + A[i] <= n2:
					dp[i + 1][j] = dp[i][j] + 1
		sigma += A[i]
	for i in range(n1 + 1):
		ans = max(ans, dp[m][i])

	print(ans)