n=int(input())
a=list(map(int,input().split()))
dp=[[0]*(2**15) for i in range(2)]
dp[0][0]=1
for i in range(n):
  for j in range(2**15-1):
    if dp[i%2][j]==1:
      dp[(i+1)%2][j^a[i]]=1
      dp[(i+1)%2][j]=1
  for j in range(2**15-1):
    dp[i%2][j]=0
ans=0
for i in range(2**15):
  if dp[n%2][i]==1:
    ans+=1
print(ans)