Submission #2229965

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Source Code Expand

#include "bits/stdc++.h"
using namespace std;
#define FOR(i,a,b) for(int i =(a);i<(b);i++)
#define REP(i,n) for(int i=0;i<(n);i++)
#define REPm(i,n) for(int i=(n)-1;i>=0;i--)
#define REP1(i,n) for(int i=1;i<=(n);i++)
#define MAX_N 100000
typedef long long ll;

int main(){
    vector<ll> A;
    int N;
    cin >> N;
    REP(i,3*N){
        ll input;
        cin >> input;
        A.push_back(input);
    }
    sort(A.begin(),A.end());
    ll ans = 0;
    REP(i,N){
        ans += A[2*(i+1)];
    }
    cout << ans << endl;
    return 0;
}

Submission Info

Judge Result