Submission #291466

#	Time	Username	Problem	Language	Result	Execution time	Memory
291466		Berted	Boxes with souvenirs (IOI15_boxes)	C++14	50 / 100	55 ms	13944 KiB

boxes

#include "boxes.h"
#include <iostream>
#include <assert.h>
#include <utility>
#include <algorithm>

using namespace std;

long long delivery(int N, int K, int L, int p[]) 
{
	long long res = 0, res2 = 0; int i, j, Lsz = 0, Rsz = 0;
	for (i = 0; i < N && p[i] <= L / 2; i++);
	for (i--; i >= 0 && p[i]; i--)
	{
		Lsz++;
		if (Lsz == K) {res += 2 * p[i + K - 1]; Lsz = 0;}
	}
	for (j = N - 1; j >= 0 && p[j] > L / 2; j--);
	for (j++; j < N; j++)
	{
		Rsz++;
		if (Rsz == K) {res += 2 * (L - p[j - K + 1]); Rsz = 0;}
	}
	long long temp = 0;
	if (Lsz) {temp += 2 * p[i + Lsz];}
	if (Rsz) {temp += 2 * (L - p[j - Rsz]);}
	res += min(temp, (long long)(Lsz + Rsz + K - 1) / K * L);

	Lsz = Rsz = 0;
	for (i = 0; i < N && p[i] == 0; i++);
	for (; i < N && p[i] <= L / 2; i++)
	{
		Lsz++;
		if (Lsz == K) {res2 += 2 * p[i]; Lsz = 0;}
	}
	for (j = N - 1; j >= 0 && p[j] > L / 2; j--)
	{
		Rsz++;
		if (Rsz == K) {res2 += 2 * (L - p[j]); Rsz = 0;}
	}
	temp = 0;
	if (Lsz) {temp += 2 * p[i - 1];}
	if (Rsz) {temp += 2 * (L - p[j + 1]);}
	res2 += min(temp, (long long)(Lsz + Rsz + K - 1) / K * L);
	//cout << res << " " << res2 << " " << temp << " " << Lsz << " " << Rsz << "\n";
    return min(res, res2);
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30