N=int(input())
A=list(map(int,input().split()))

Max=2**15
dp=[False]*Max
dp[0]=True

for i in range(N):
    for j in range(Max):
        if j^A[i]<Max:
            dp[j^A[i]]|=dp[j]

ans=0
for i in range(Max):
    if dp[i]:ans+=1
print(ans)