Submission #999241

#	Time	Username	Problem	Language	Result	Execution time	Memory
999241		coolboy19521	Boxes with souvenirs (IOI15_boxes)	C++17	10 / 100	1 ms	6596 KiB

boxes

#include "bits/stdc++.h"
#include "boxes.h"

using namespace std;

const int sz = 1e7 + 7;

int pr[sz], su[sz], fo[sz], ba[sz];

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

    for (int i = 0; i < N; i ++) {
        su[i] = L - p[i] + min(p[i], L - p[i]);
    }

    for (int i = 0; i < N; i ++) {
        fo[i] = pr[i];
        if (0 <= i - K) {
            fo[i] += fo[i - K];
        }
    }

    for (int i = N - 1; -1 < i; i --) {
        ba[i] = su[i];
        if (i + K <= N) {
            ba[i] += su[i + K];
        }
    }

    int mn = min(fo[N - 1], ba[0]);

    for (int i = 0; i < N - 1; i ++) {
        mn = min(mn, fo[i] + ba[i + 1]);
    }

    return mn;
}

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