제출 #424394

#제출 시각아이디문제언어결과실행 시간메모리
424394SuhaibSawalha1선물상자 (IOI15_boxes)C++17
0 / 100
1 ms204 KiB
#include "boxes.h" #include <bits/stdc++.h> using namespace std; long long delivery(int N, int K, int L, int p[]) { long long ans, A[N], A2[N], KS = 0; for (int i = 0; i < N; ++i) { if (i % K == 0 && i) { KS += min(2 * p[i - 1], L); } A[i] = KS + min(2 * p[i], L); } KS = 0; for (int i = N - 1; ~i; --i) { if ((N - i - 1) % K == 0 && i < N - 1) { KS += min(2 * (L - p[i + 1]), L); } A2[i] = KS + min(2 * (L - p[i]), L); } ans = min({A[N - 1], A2[0], K == N ? L : A[N - K - 1] + L}); for (int i = 0; i + K - 1 < N; ++i) { ans = min(ans, A[i] + A2[i + K - 1] + L); } return ans; }
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