제출 #1120911

#제출 시각아이디문제언어결과실행 시간메모리
1120911SalihSahin선물상자 (IOI15_boxes)C++14
10 / 100
2 ms600 KiB
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
#include "boxes.h"

const long long inf = 1e18;

long long delivery(int N, int K, int L, int p[]) {
    vector<long long> dpl(N+1), dpr(N+1);
    for(int i = 1; i <= N; i++){
        if(i < K) dpl[i] = p[i-1] * 2;
        else dpl[i] = dpl[i - K] + p[i-1] * 2;
    }

    for(int i = 1; i <= N; i++){
        if(i < K) dpr[i] = (L - p[N-i]) * 2;
        else dpr[i] = dpr[i - K] + (L - p[N-i]) * 2;
    }

    long long ans = inf;
    for(int l = 0; l <= N; l++){
        for(int r = 0; r + l <= N; r++){
            int rem = N - l - r;
            long long calc = dpl[l] + dpr[r] + ((rem + K - 1)/K) * L;
            ans = min(ans, calc);
        }
    }

    return ans;
}
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