n,w=map(int,input().split())
a=list(map(int,input().split()))
c=0
for i in range(1,1<<n):
	b=[a[j] for j in range(n) if (i>>j)&1]
	if sum(b)==w:
		c+=1
	elif sum(b)>w:
		if (sum(b)-w)*2 in b:
			c+=1
print(c)