Submission #1185375

#	Time	Username	Problem	Language	Result	Execution time	Memory
1185375		stdfloat	Boxes with souvenirs (IOI15_boxes)	C++20	25 / 100	0 ms	328 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"
// #include "grader.cpp"
using namespace std;

using ll = long long;

ll delivery(int n, int K, int L, int p[]) {
	vector<ll> a(n), b(n);
	for (int i = 0; i < n; i++)
		a[i] = (p[i] << 1) + (K <= i ? a[i - K] : 0);
	for (int i = n - 1; i >= 0; i--)
		b[i] = (L - p[i] << 1) + (i + K < n ? b[i + K] : 0);

	ll mn = min(a[n - 1], b[0]);
	for (int i = 0; i < n; i++)
		mn = min({mn, a[i] + (i + 1 < n ? b[i + 1] : 0), a[i] + L + (i + K + 1 < n ? b[i + K + 1] : 0)});

	return mn;
}

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