def main():
  N,W=map(int,input().split())
  a=list(map(int,input().split()))
  ans=set()
  for i in range(1,pow(3,N)):
    s=0
    M=i
    l=[]
    for j in range(N):
      if M%3==1:
        s+=a[j]//2
        l.append(1)
      elif M%3==2:
        s+=a[j]
        l.append(1)
      else:
        l.append(0)
      M//=3
    if s==W:
      ans.add("".join(map(str,l)))
  print(len(ans))
  return    

main()