MAX = 60

def accept(n1, n2, fragments, upper):
    if upper == 0:
        return True

    total = 0
    for i in range(upper):
        total = total + fragments[i]
    if n1+n2 < total:
        return False

    dp = [False for _ in range(MAX)]
    dp[0] = True

    for i in range(upper):
        for j in reversed(range(MAX)):
            if dp[j]:
                if j + fragments[i] <= n1:
                    dp[j + fragments[i]] = True

    for i in reversed(range(MAX)):
        if dp[i] and total - i <= n2:
            return True

    return False

N = int(input())
        
for i in range(N):
    n1, n2 = sorted(list(map(int, input().split(' '))))
    m = int(input())
    fragments = sorted(list(map(int, input().split(' '))))

    for j in reversed(range(0,m+1)):
        if accept(n1, n2, fragments, j):
            print(j)
            break