제출 #1076395

#제출 시각아이디문제언어결과실행 시간메모리
1076395juicy선물상자 (IOI15_boxes)C++17
10 / 100
1 ms440 KiB
#include "boxes.h" #include <bits/stdc++.h> long long delivery(int N, int K, int L, int *p) { std::vector<long long> pf(N + 3), sf(N + 3); for (int i = N; i; --i) { sf[i] = sf[std::min(N + 1, i + K)] + 2 * (L - p[i - 1]); } std::deque<int> dq; dq.push_back(0); auto res = sf[1]; for (int i = 1; i <= N; ++i) { pf[i] = pf[std::max(0, i - K)] + 2 * p[i - 1]; res = std::min(res, std::min(pf[i], pf[dq.front()] + 2 * L) + sf[i + 1]); if (dq.front() == i - K) { dq.pop_front(); } while (dq.size() && pf[dq.back()] >= pf[i]) { dq.pop_back(); } dq.push_back(i); } return res; }
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