from collections import deque

n,w=map(int,input().split())
A=list(map(int,input().split()))
ans=0
ind=deque()
for i in range(1<<n):
    sum=0
    cnt=0
    for j in range(n):
        if i & 1<<j:
            sum+=A[j]
            ind.append(j)
            cnt+=1
    if sum==w:
        ans+=1
    for k in range(cnt):
        x=ind.pop()
        if sum-A[x]//2==w:
            ans+=1
        
print(ans)