N=int(input())
A=[int(x) for x in input().split()]
ans=0
t=1
M=max(A)
while t<=M:
	B=[a%2 for a in A]
	x = N*(N+1)//2
	a=0
	for b in B:
		if b:
			x-=a*(a+1)//2
			a=0
		else:
			a+=1
	x-=a*(a+1)//2
	ans+=t*x
	t*=2
	A=[a//2 for a in A]
print(ans)