Submission #642059

#	Time	Username	Problem	Language	Result	Execution time	Memory
642059		QwertyPi	Boxes with souvenirs (IOI15_boxes)	C++14	100 / 100	526 ms	221256 KiB

boxes

#include "boxes.h"
 
#include <bits/stdc++.h>
 
using namespace std;
 
long long dp_l[10000001];
long long dp_r[10000001];
 
long long delivery(int N, int K, int L, int p[]) {
	for(int i = 0; i < N; i++){
		dp_l[i + 1] = dp_l[max(0, i + 1 - K)] + min(L, p[i] * 2);
	}
	for(int i = N; i >= 1; i--){
		dp_r[i] = dp_r[min(N + 1, i + K)] + min(L, (L - p[i - 1]) * 2);
	}
	long long ans = 1LL << 60;
	for(int l = 0; l <= N; l++){
		ans = min(ans, dp_l[l] + dp_r[l + 1]);
	}
	return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30