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

ans = set()
for status in range(3 ** N):
    i = 0
    val = 0
    cond = 0
    while status:
        if status % 3 == 2:
            val += A[i]
            cond |= (1 << i)
        elif status % 3 == 1:
            val += A[i] // 2
            cond |= (1 << i)
        status //= 3
        i += 1
    if val == W:
        ans.add(cond)
        
print(len(ans))