"""

"""
from sys import stdin
import sys

N,W = map(int,stdin.readline().split())

a = list(map(int,stdin.readline().split()))

ans = set()
for i in range(3**N):

    now = 0
    s = []
    for j in range(N):
        if i % 3 == 0:
            now += a[j]
        elif i % 3 == 1:
            now += a[j] // 2
        else:
            s.append(j)
        i //= 3

    s.sort()
    if now == W:
        ans.add(tuple(s))

print (len(ans))