n = int(input())
A = list(map(int,input().split()))
ans = 0

for i in range(28):

    l = []

    for ind,a in enumerate(A):
        if a >> i & 1:
            l.append(ind)

    l = l[::-1]
    count = 0
    for ind,a in enumerate(A):
        if a >> i & 1:
            count += n-l[-1]
            l.pop()
        elif l:
            count += n - l[-1]
    ans += count << i

print(ans)