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