제출 #165227

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
165227		Atill83	Akcija (COCI15_akcija)	C++14	80 / 80	39 ms	1164 KiB

akcija

#include <bits/stdc++.h>
#define ff first
#define ss second
#define endl '\n'
using namespace std;
const long long INF = (long long) 1e18;
const int mod = (int) 1e9+7;
const int MAXN = (int) 3e5+5;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
ll n;
int a[MAXN];

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);

    #ifdef Local
        freopen("../IO/int.txt","r",stdin);
        freopen("../IO/out.txt","w",stdout);
    #endif

    cin>>n;

    for(int i = 0; i < n; i++){
        cin>>a[i];
    }
    sort(a, a + n);

    ll ans = 0;
    for(int i = n - 1; i >= 0; i-=3){
        if(i < 2){
            ans += a[i] + (i > 0 ? a[i - 1]: 0);
        }else{
            ans += a[i] + a[i - 1];
        }
    }
    cout<<ans<<endl;
    #ifdef Local
        cout<<endl<<fixed<<setprecision(2)<<1000.0 * clock() / CLOCKS_PER_SEC<< " milliseconds ";
    #endif
}

• Subtask 1: 80 / 80