N,W = map(int,input().split())
A = list(map(int,input().split()))

ans = 0
for status in range(1 << N):
    val = 0
    for i in range(N):
        if (status >> i) & 1:
            val += A[i]
    if val == W:
        ans += 1
    for i in range(N):
        if (status >> i) & 1:
            if val - A[i] // 2 == W:
                ans += 1
print(ans)