제출 #154124

#제출 시각아이디문제언어결과실행 시간메모리
154124popovicirobertBoxes with souvenirs (IOI15_boxes)C++14
100 / 100
842 ms198748 KiB
#include "boxes.h" #include <bits/stdc++.h> #define ll long long using namespace std; const int MAXN = (int) 1e7 + 5; // ??? static ll pref[MAXN + 1], suff[MAXN + 1]; long long delivery(int n, int k, int l, int p[]) { int i; sort(p, p + n); pref[0] = 0; for(i = 1; i <= n; i++) { pref[i] = pref[max(i - k, 0)] + p[i - 1] + min(p[i - 1], l - p[i - 1]); } suff[n + 1] = 0; for(i = n; i >= 1; i--) { suff[i] = suff[min(n + 1, i + k)] + (l - p[i - 1]) + min(p[i - 1], l - p[i - 1]); } ll ans = 1e18; for(i = 0; i <= n; i++) { ans = min(ans, pref[i] + suff[i + 1]); } return ans; }
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