import sys
input = lambda: sys.stdin.readline().rstrip()

#  -----------------------  #

n, w = map(int, input().split())
A = list(map(int, input().split()))
ans = set()
for i in range(3**n):
  tmp = 0
  buy = set()
  for j in range(n):
    if i%3 == 0:
      tmp += A[j]
      buy.add(j)
    elif i % 3 == 1:
      tmp += A[j] // 2
      buy.add(j)
    i //= 3

  if tmp == w:
    ans.add(frozenset(buy))

print(len(ans))