제출 #1017525

#제출 시각아이디문제언어결과실행 시간메모리
1017525DorostWef선물상자 (IOI15_boxes)C++17
10 / 100
1 ms448 KiB
#include "boxes.h" #include <bits/stdc++.h> using namespace std; typedef long long ll; const int MN = 1e7 + 10; ll ps[MN], ss[MN]; long long delivery(int N, int K, int L, int p[]) { int n = N, k = K, l = L; for (int i = 0; i < n; i++) { if (i < k) { ps[i] = 2 * p[i]; } else { ps[i] = 2 * p[i] + ps[i - k]; } } for (int i = n - 1; i >= 0; i--) { if (i >= n - k) { ss[i] = 2 * (l - p[i]); } else { ss[i] = 2 * (l - p[i]) + ss[i + k]; } } ll ans = min (ps[n - 1], ss[0]); for (int i = 0; i < n - 1; i++) { ans = min(ans, ps[i] + ss[i + 1]); } for (int i = 0; i < n - k - 1; i++) { ans = min(ans, ps[i] + ss[i + k + 1] + l); } return ans; }
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