제출 #364894

#제출 시각아이디문제언어결과실행 시간메모리
364894dennisstar선물상자 (IOI15_boxes)C++17
0 / 100
1 ms364 KiB
#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;

using ll = long long;

const ll MX = 1e7 + 5;

ll D[MX], E[MX];

ll delivery(int N, int K, int L, int *P) {
	for (int i=1; i<=N; i++) D[i]=(i>K?D[i-K]:0)+P[i]+min(P[i], L-P[i]);
	for (int i=N; i>=1; i--) E[i]=(i<=N-K?E[i+K]:0)+(L-P[i])+min(P[i], L-P[i]);
	ll A=1e18;
	for (int i=0; i<=N; i++) A=min(A, D[i]+E[i+1]);
	return A;
}
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