제출 #992407

#제출 시각아이디문제언어결과실행 시간메모리
992407phoenixBoxes with souvenirs (IOI15_boxes)C++17
10 / 100
0 ms448 KiB
#include "boxes.h"
#include <bits/stdc++.h>

using namespace std;

long long delivery(int n, int k, int L, int p[]) {
    long long res = 0;
    int l = 0;
    while (l < n && p[l] * 2 < L) {
        int nxt = min(n - 1, l + k - 1);
        res += min(p[nxt] * 2, L);
        l = nxt + 1;
    }
    int r = n - 1;
    while (r >= l) {
        int nxt = max(r - k + 1, l);
        res += (L - p[nxt]) * 2;
        r = nxt - 1;
    }
    return res;
}
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