제출 #431049

#제출 시각아이디문제언어결과실행 시간메모리
431049muhammad_hokimiyon선물상자 (IOI15_boxes)C++14
10 / 100
4 ms204 KiB
#include "boxes.h"
#include <bits/stdc++.h>

#define fi first
#define se second
#define ll long long
#define dl double

using namespace std;

ll delivery(int N, int K, int L, int P[])
{
        vector<ll> d(N + 1, 1e18);
        d[0] = 0;
        vector<ll> p(N + 1, 0);
        for(int i = 1; i <= N; i++)p[i] = P[i - 1];
        sort(p.begin(), p.end());
        auto go = [&](int i, int j) -> ll{
                ll res = 1e18;
                res = min(res, abs(p[i] - p[j]));
                res = min(res, L - p[i] + p[j]);
                res = min(res, L - p[j] + p[i]);
                return res;
        };
        for(int i = 1; i <= N; i++){
                for(int j = i; j >= 1; j--){
                        if(i - j + 1 > K)break;
                        d[i] = min(d[i], d[j - 1] + go(0, i) + go(i, j) + go(j, 0));
                }
        }
        return d[N];
}
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