oj.uz

Submission #1075535

# Submission time Handle Problem Language Result Execution time Memory
1075535 2024-08-26T07:30:08 Z Elias Boxes with souvenirs (IOI15_boxes) C++17
100 / 100
 759 ms 377020 KB 
#ifndef _DEBUG
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#endif

#include <bits/stdc++.h>

using namespace std;

#ifndef _DEBUG
#include "boxes.h"
#else
long long delivery(int N, int K, int L, int p[]);

#endif

#define ll long long

ll inf = LLONG_MAX / 10;

struct SegTree
{
	vector<ll> b;
	vector<ll> a;

	SegTree(int n)
	{
		b.resize(4 * n, inf);
		a.resize(n, inf);
	}

	ll segGet(int l, int r, int i, int ql, int qr)
	{
		if (qr <= l || r <= ql)
			return inf;
		if (ql <= l && qr >= r)
			return b[i];
		int m = (l + r) / 2;
		return min(segGet(l, m, i * 2 + 1, ql, qr), segGet(m, r, i * 2 + 2, ql, qr));
	}

	ll segSet(int l, int r, int i, int k, ll x)
	{
		if (r <= k || l > k)
			return b[i];
		if (l + 1 == r)
			return a[l] = b[i] = x;
		int m = (l + r) / 2;
		return b[i] = min(segSet(l, m, i * 2 + 1, k, x), segSet(m, r, i * 2 + 2, k, x));
	}
};

vector<ll> calculate_pref(int l, vector<int> a, int k)
{
	int n = a.size() + 1;

	vector<ll> out(n);

	deque<pair<ll, int>> sliding_window;
	sliding_window.push_back({0, 0});

	for (int i = 1; i < n; i++)
	{
		ll prev = 0;
		while (sliding_window.size() > 0 && i - sliding_window.front().second > k)
			sliding_window.pop_front();

		if (sliding_window.size())
			prev = sliding_window.front().first;

		ll cost = int64_t(a[i - 1]) + prev + min<ll>(a[i - 1], l - a[i - 1]);

		out[i] = cost;
		while (sliding_window.size() > 0 && sliding_window.back().first >= cost)
			sliding_window.pop_back();
		sliding_window.push_back({cost, i});
	}

	return out;
}

long long delivery(int N, int K, int L, int p[])
{
	vector<int> positions(N);

	for (int i = 0; i < N; i++)
		positions[i] = p[i];

	vector<ll> pref = calculate_pref(L, positions, K);
	reverse(positions.begin(), positions.end());
	for (int i = 0; i < N; i++)
		positions[i] = L - positions[i];
	vector<ll> suff = calculate_pref(L, positions, K);

	ll best = inf;

	for (int cnt_a = 0; cnt_a <= N; cnt_a++)
	{
		int cnt_b = N - cnt_a;

		best = min(best, pref[cnt_a] + suff[cnt_b]);
	}

	return best;
}

#ifdef _DEBUG

#include <stdio.h>
#include <stdlib.h>

static char buffer[1024];
static int currentChar = 0;
static int charsNumber = 0;

static inline int read()
{
	if (charsNumber < 0)
	{
		exit(1);
	}
	if (!charsNumber || currentChar == charsNumber)
	{
		charsNumber = (int)fread(buffer, sizeof(buffer[0]), sizeof(buffer), stdin);
		currentChar = 0;
	}
	if (charsNumber <= 0)
	{
		return -1;
	}
	return buffer[currentChar++];
}

static inline int readInt()
{
	int x;
	cin >> x;
	return x;
}

int main()
{
	int N, K, L, i;
	N = readInt();
	K = readInt();
	L = readInt();

	int *p = (int *)malloc(sizeof(int) * (unsigned int)N);

	for (i = 0; i < N; i++)
	{
		p[i] = readInt();
	}

	fprintf(stdout, "%lld\n", delivery(N, K, L, p));
	return 0;
}

#endif

Compilation message

boxes.cpp: In function 'std::vector<long long int> calculate_pref(int, std::vector<int>, int)':
boxes.cpp:56:19: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   56 |  int n = a.size() + 1;
      |          ~~~~~~~~~^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 70 ms 27664 KB Output is correct
34 Correct 41 ms 27660 KB Output is correct
35 Correct 47 ms 27716 KB Output is correct
36 Correct 70 ms 27660 KB Output is correct
37 Correct 69 ms 27664 KB Output is correct
38 Correct 67 ms 27664 KB Output is correct
39 Correct 65 ms 27660 KB Output is correct
40 Correct 49 ms 27664 KB Output is correct
41 Correct 67 ms 27664 KB Output is correct
42 Correct 50 ms 27620 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 70 ms 27664 KB Output is correct
34 Correct 41 ms 27660 KB Output is correct
35 Correct 47 ms 27716 KB Output is correct
36 Correct 70 ms 27660 KB Output is correct
37 Correct 69 ms 27664 KB Output is correct
38 Correct 67 ms 27664 KB Output is correct
39 Correct 65 ms 27660 KB Output is correct
40 Correct 49 ms 27664 KB Output is correct
41 Correct 67 ms 27664 KB Output is correct
42 Correct 50 ms 27620 KB Output is correct
43 Correct 738 ms 357480 KB Output is correct
44 Correct 432 ms 294004 KB Output is correct
45 Correct 485 ms 301936 KB Output is correct
46 Correct 733 ms 371888 KB Output is correct
47 Correct 742 ms 371892 KB Output is correct
48 Correct 759 ms 372092 KB Output is correct
49 Correct 733 ms 368176 KB Output is correct
50 Correct 501 ms 310684 KB Output is correct
51 Correct 759 ms 377020 KB Output is correct
52 Correct 499 ms 313304 KB Output is correct