import sys
input = sys.stdin.buffer.readline
sys.setrecursionlimit(10 ** 7)



def test():
    x, y = map(int, input().split())
    m = int(input())
    A = sorted(map(int, input().split()))
    dp = {(0, 0), }
    ans = 0
    for i, a in enumerate(A, 1):
        newDP = set()
        for (lx, ly) in dp:
            if lx + a <= x:
                newDP.add((lx + a, ly))
            if ly + a <= y:
                newDP.add((lx, ly + a))
        dp = newDP
        if dp:
            ans = i
    return ans


d = int(input())
print(*[test() for _ in range(d)], sep="\n")