Lang:G++
Edit12345678910111213141516171819202122#include<iostream>#include<vector>using namespace std;int main(){int n;long long result=0;cin>>n;vector<int>nums(n,0);for(int i=0;i<n;i++){int t;cin>>t;nums[i]=t;}for(int i=0;i<n;i++){for(int j=i+1;j<n;j++){if(nums[i]>nums[j])result+=nums[i]^nums[j];}}cout<<result<<endl;return 0;}