T = int(input())
for _ in range(T):
    N, M = map(int, input().split())
    A = list(map(int, input().split()))
    
    if N <= 2 * M:
        B = list(A)
        while len(B) != 1:
            C = []
            for i in range(1, len(B)):
                C.append((B[i] + B[i-1]) * (B[i-1] + B[i]) % (1 << M))
            B = C
        print(B[0])
        continue
    
    C = [0] * M
    for i in range(M):
        for j in range(i, N - M + i + 1):
            if (N - M) & (j - i) == j - i and A[j] % 2:
                C[i] = (C[i] + 1) % 2
    
    D = list(C)
    for i in range(2, M + 1):
        E = []
        for j in range(1, len(D)):
            E.append((D[j-1] + D[j]) * (D[j-1] + D[j]) % (1 << i))
        D = E
    
    print(D[0])