#include
using namespace std;
void PairZeroSum(long long int *a,int n){
int count =0;
for(int i=0;i<n;i++){
// count =0;
for(int j=i+1;j<n;j++){
if((a[j] & a[i]) == 0){
count=count+1;
//cout<<"("<<a[i]<<","<<a[j]<<")"<<endl;
}
// cout<<"("<<a[i]<<","<<a[j]<<")"<<endl;
}
}
cout<<count<<endl;
}
int main () {
int n;
cin>>n;
long long int a[100005];
for(int i=0;i<n;i++){
cin>>a[i];
}
PairZeroSum(a,n);
return 0;
}