def solve():
    n1,n2 = map(int,input().split())
    m = int(input())
    *a, = map(int,input().split())
    a.sort()
    dp = 1
    v = 0
    mask = (1<<(n1+1)) - 1
    for i,ai in enumerate(a):
        v += ai
        dp |= dp<<ai
        dp &= mask
        if v >= n2 and dp < 1<<(v-n2):
            return i
    return m

d = int(input())
for _ in range(d):
    print(solve())