from collections import defaultdict

def getChannelRating(views):
    ans = 0
    m = defaultdict(int)
    m[0] = 1
    p = 0
    pre = [0] * len(views)

    for i in range(len(views)):
        p ^= views[i]

        if i >= 2:
            ans += m[p]

            if pre[i - 1] == p:
                ans -= 1

        m[p] += 1
        pre[i] = p

    return ans