n = int(input())
a = list(map(int,input().split()))
ans = 0
for i in range(30):
    b = []
    for j in range(n):
        tmp = (a[j]>>i)&1
        if not b:
            b.append([tmp,1])
        else:
            if b[-1][0] == tmp:
                b[-1][1] += 1
            else:
                b.append([tmp,1])
    tmp = n*(n+1)//2
    for bm, cnt in b:
        if bm == 1: continue
        tmp -= cnt*(cnt+1)//2
    ans += (1<<i)*tmp
print(ans)