제출 #666286

#제출 시각아이디문제언어결과실행 시간메모리
666286jamezzzBoxes with souvenirs (IOI15_boxes)C++17
10 / 100
1 ms340 KiB
#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;

#define LINF 1023456789123456789
typedef long long ll;
#define maxn 10000005

ll pfx[maxn], sfx[maxn];

ll delivery(int N, int K, int L, int p[]){
    sort(p, p + N);
    for (int i = 0; i < N; ++i) {
        sfx[i % K] += L - p[i];
    }
    ll ans = LINF;
    for (int i = 0; i < N; ++i) {
        pfx[i % K] += p[i];
        sfx[i % K] -= L - p[i];
        ans = min(ans, pfx[i % K] * 2 + sfx[(i + 1) % K] * 2);
    }
    return ans;
}
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