N=int(input())
A=list(map(int,input().split()))
A.sort()
mod=10**9+7

ans=0
for i in range(N-1):
    for j in range(i+1,N):
        if A[i]!=A[j]:
            ans+=A[i]^A[j]
            ans=ans%mod
        else:
            continue

print(ans)