=int(input())
l=10**9+7
nums=list(map(int,input().split()))
k=len(str(bin(max(nums))))-2
mat=[]
for each in nums:
    num=str(bin(each))[2:].zfill(k)
    mat.append(list(num))

mat=list(zip(*mat))
ans=0

for i in range(k):
    b=mat[i].count("1")
    
    ans+=b*(N-b)*(2**(k-i-1))
print(ans)