n = int(input())
a = list(map(int,input().split()))
for i in range(n):
    a[i] = list(format(a[i],'0b').zfill(65))
g = [0 for i in range(65)]
for i in range(65):
    for j in range(n):
        if a[j][i] == '1':
            g[i] += 1
ans = 0
for i in range(len(g)):
    ans += g[i]*(n-g[i])*(2**(64-i))
print(int(ans))