Submission #541513

#	Time	Username	Problem	Language	Result	Execution time	Memory
541513		Jomnoi	Boxes with souvenirs (IOI15_boxes)	C++17	0 / 100	0 ms	340 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"
using namespace std;

const int MAX = 1e7 + 10;
const long long INF = 1e18 + 7;

long long pre[MAX], suf[MAX];

long long delivery(int N, int K, int L, int p[]) {
    for(int i = 0; i < N; i++) {
        if(i - K >= 0) {
            pre[i] += pre[i - K];
        }

        pre[i] += 2 * p[i];
    }

    for(int i = N - 1; i >= 0; i--) {
        if(i + K < N) {
            suf[i] += suf[i + K];
        }

        suf[i] += 2 * (L - p[i]);
    }

    long long ans = INF;
    for(int i = 1; i < N; i++) {
        ans = min(ans, pre[i - 1] + suf[i]);
    }
    return ans;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30