Submission #1368879

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Source Code Expand

#include <bits/stdc++.h>
 
#define pii pair<int, int>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define ll long long 
#define ld long double
#define sz(v) int(v.size())
#define all(v) v.begin(), v.end()
 
#define y1 what

using namespace std;
 
const int N = (int) 2e5 + 10;
const int M = (int) 18;
const ll big =  (1LL << 51);
const ll LINF = (ll) 1e18;
const int INF = (int) 1e9 + 7;
const double EPS = (double) 1e-6;
const double PI =  3.14159265359;
int n;

int main() {
    #define fn "balls"
    #ifdef witch
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #else
//        freopen(fn".in", "r", stdin);
//        freopen(fn".out", "w", stdout);
    #endif
    srand(time(0));
    cin >> n;
    multiset<int> st;
    for (int i = 1, a; i <= 3 * n; i++) {
        cin >> a;
        st.insert(a);
    }
    ll ans = 0;
    for (int i = 1; i <= n; i++) {
        st.erase(st.begin());
        st.erase(--st.end());
        ans += *st.rbegin();
        st.erase(--st.end());
    } 
    cout << ans;
    return 0;
}   

Submission Info

Judge Result