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)