n=int(input())
a=list(map(int,input().split()))
dp=[[0]*(20000) for _ in range(1+n)]
dp[0][0]=1
for i in range(n):
    for j in range(20000):
        if dp[i][j]:
            dp[i+1][j^a[i]]=1
            dp[i+1][j]=1
print(sum(dp[-1]))