제출 #666293

#제출 시각아이디문제언어결과실행 시간메모리
666293jamezzz선물상자 (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) {
        if (2 * p[i] > L) {
            sfx[i % K] += (L - p[i]) * 2;
        }
        else {
            sfx[i % K] += L;
        }
    }
    ll ans = LINF;
    for (int i = 0; i < N; ++i) {
        if (2 * p[i] < L) {
            pfx[i % K] += p[i] * 2;
            sfx[i % K] -= L;
        }
        else {
            pfx[i % K] += L;
            sfx[i % K] -= (L - p[i]) * 2;
        }
        ans = min(ans, pfx[i % K] + sfx[(i + 1) % K]);
    }
    return ans;
}
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