Submission #133031

#	Time	Username	Problem	Language	Result	Execution time	Memory
133031		MAMBA	Boxes with souvenirs (IOI15_boxes)	C++14	100 / 100	843 ms	293840 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>

using namespace std;

#define rep(i , j , k) for (int i = j; i < (int)k; i++)

typedef long long ll;
typedef vector<ll> vl;


ll delivery(int N, int K, int Ll, int p[]) {
	sort(p , p + N);
	vl L(N) , R(N);
	rep(i , 0 , N) {
		L[i] = p[i];
		L[i] = min(1ll * Ll , 2 * L[i]);
		if (i >= K)
			L[i] += L[i - K];
	}
	for (int i = N - 1; ~i; i--) {

		R[i] = Ll - p[i];
		R[i] = min(1ll * Ll , 2 * R[i]);
		if (i + K < N)
			R[i] += R[i + K];
	}

	ll ans = min(L[N - 1] , R[0]);
	rep(i , 1 , N) 
		ans = min(ans , L[i - 1] + R[i]);
	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