import sys
n = int(sys.stdin.readline())
L = [int(sys.stdin.readline()) for i in range(n)]
D = [0]*30
for i in L:
k = i
cnt = 0
while k > 0:
D[cnt] += k%2
k//=2
cnt+=1
ans = 0
c = 1
for i in D:
ans += c*(i*(n-i))
c*=2
print(ans)