Submission #3052166

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
using Int = long long;
//INSERT ABOVE HERE
signed main(){
  Int n;
  cin>>n;
  n<<=1;
  vector<Int> l(n);
  for(Int i=0;i<n;i++) cin>>l[i];
  Int ans=0;
  sort(l.rbegin(),l.rend());
  for(Int i=0;i+1<n;i+=2) ans+=l[i+1];
  cout<<ans<<endl;
  return 0;
}

Submission Info

Judge Result