import sys
input = sys.stdin.readline

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

Pow2 = [pow(2, i) for i in range(28)]
D = [[0 for _ in range(28)] for _ in range(n)]
for i in range(n):
    a = A[i]
    for j in range(28):
        a, r = divmod(a, 2)
        D[i][j] = r
ans = 0
for i in range(28):
    cnt = 0
    one_last_idx = -1
    for j in range(n):
        if D[j][i] == 1:
            one_last_idx = j
        ans += Pow2[i] * (one_last_idx + 1)
print(ans)