Submission #1194247

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

typedef long long LL;
typedef vector < int > VI;
typedef vector < VI > VVI;
typedef pair < int , int > PII;

#define ALL(x) x.begin(),x.end()
#define PB push_back
#define MP make_pair
#define SZ(x) x.size()
#define SET(a , b) memset(a , b , sizeof(a))
#define REP(i, n) for(int i = 0 ; i < n ; i++)
#define FOR(i, a, b) for(int i = a ; i <= b ; i++)
#define FORD(i, a, b) for(int i = a ; i >= b ; i--)
#define BOOST ios_base::sync_with_stdio(0);

const int N = 3e5 + 5;
int n;
int arr[N];
LL ans;
int main(){
	BOOST;
	cin >> n;
	FOR(i , 1 , 3 * n) cin >> arr[i];
	sort(arr + 1 , arr + 1 + 3 * n);
	REP(i , n){
		ans += (LL) (arr[3 * n - 1 - 2 * i]);
	}
	cout << ans << endl;
}

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