oj.uz

답안 #1085814

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1085814 2024-09-08T18:28:03 Z I_am_Polish_Girl Cat Exercise (JOI23_ho_t4) C++14
100 / 100
 336 ms 81600 KB 
#pragma target("arch=icelake-server")

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <stack> 
#include <queue>
#include <cmath>
#include <random>
#include <chrono>
#include <iomanip>
#include <bitset>

using namespace std;

#define int long long 

typedef long long ll;
typedef long double ld;

int log_ = 21;
int inf = 1000000007;

long long mod = 998244353;

int p = 499;

int NADIYA = 39;


vector <vector <int>> g;

vector <int> t_in;
vector <int> t_out;

vector <vector <int>> bin;

vector <int> deep;

vector <int> a;

int t = 0;

void dfs_build(int ind, int last , int d)
{
	deep[ind] = d;

	bin[ind][0] = last;

	for (int i = 1; i < log_; i++)
	{
		bin[ind][i] = bin[bin[ind][i - 1]][i - 1];
	}

	t_in[ind] = t;
	t++;

	for (int i = 0; i < g[ind].size(); i++)
	{
		int ind_s = g[ind][i];

		if (ind_s == last)
			continue;

		dfs_build(ind_s, ind , d+1);
	}

	t_out[ind] = t;
	t++;
}

bool is_up(int u, int v)
{
	if ((t_in[u] <= t_in[v]) and (t_out[v] <= t_out[u]))
	{
		return true;
	}

	return false;
}

int lca(int u, int v)
{
	if (is_up(u, v) == true)
		return u;

	if (is_up(v , u) == true)
		return v;

	for (int i = log_ - 1; i >= 0; i--)
	{
		int u_ = bin[u][i];

		if (is_up(u_, v) == false)
			u = u_;
	}

	u = bin[u][0];
	return u;
}

int dist(int u, int v)
{
	int l = lca(u, v);

	return deep[u] + deep[v] - 2 * deep[l];
}


vector <int> link;
vector <int> w;
vector <int> ind_;

int per(int u)
{
	if (link[u] == u)
		return u;

	link[u] = per(link[u]);

	return link[u];
}

void merge(int u, int v)
{
	u = per(u);
	v = per(v);

	if (u == v)
		return;

	if (w[u] < w[v])
		swap(u, v);


	link[v] = u;
	w[u] += w[v];

	if (a[ind_[u]] < a[ind_[v]])
		ind_[u] = ind_[v];
}


vector <int> dp;



signed main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);

	int n;
	cin >> n;


	link.resize(n);
	w.resize(n);
	ind_.resize(n);

	for (int i = 0; i < n; i++)
	{
		link[i] = i;
		w[i] = 1;
		ind_[i] = i;
	}

	dp.resize(n, -1);
	a.resize(n);

	t_in.resize(n);
	t_out.resize(n);

	for (int i = 0; i < n; i++)
		cin >> a[i];

	bin.resize(n);

	for (int i = 0; i < n; i++)
	{
		bin[i].resize(log_);
	}


	deep.resize(n);


	g.resize(n);

	for (int i = 0; i < n - 1; i++)
	{
		int u, v;
		cin >> u >> v;
		
		u--;
		v--;

		g[u].push_back(v);
		g[v].push_back(u);
	}


	dfs_build(0, 0, 0);

	vector <pair <int, int>> vp;

	for (int i = 0; i < n; i++)
	{
		vp.push_back({ a[i] , i });
	}

	sort(vp.begin(), vp.end());

	
	for (int k = 0; k < n; k++)
	{
		int ind = vp[k].second;

		for (int i = 0; i < g[ind].size(); i++)
		{
			int ind_s = g[ind][i];

			if (dp[ind_s] != -1)
			{
				int u = ind_[per(ind_s)];

				dp[ind] = max(dp[ind], dist(ind, u) + dp[u]);
			}
		}

		for (int i = 0; i < g[ind].size(); i++)
		{
			int ind_s = g[ind][i];

			if (dp[ind_s] != -1)
			{
				merge(ind, ind_s);
			}
		}


		dp[ind] = max(dp[ind], 0ll);
	}


	for (int i = 0; i < n; i++)
		if (a[i] == n)
			cout << dp[i];
}

/*
5 5 2
2 2
4 4
#....
#.##.
####.
##...
.....
*/

Compilation message

Main.cpp:1: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
    1 | #pragma target("arch=icelake-server")
      | 
Main.cpp: In function 'void dfs_build(long long int, long long int, long long int)':
Main.cpp:62:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |  for (int i = 0; i < g[ind].size(); i++)
      |                  ~~^~~~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:224:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  224 |   for (int i = 0; i < g[ind].size(); i++)
      |                   ~~^~~~~~~~~~~~~~~
Main.cpp:236:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  236 |   for (int i = 0; i < g[ind].size(); i++)
      |                   ~~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 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

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 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 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 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 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 3 ms 2396 KB Output is correct
19 Correct 3 ms 2396 KB Output is correct
20 Correct 3 ms 2540 KB Output is correct
21 Correct 3 ms 2396 KB Output is correct
22 Correct 3 ms 2396 KB Output is correct
23 Correct 3 ms 2396 KB Output is correct
24 Correct 3 ms 2396 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 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 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 3 ms 2396 KB Output is correct
19 Correct 3 ms 2396 KB Output is correct
20 Correct 3 ms 2540 KB Output is correct
21 Correct 3 ms 2396 KB Output is correct
22 Correct 3 ms 2396 KB Output is correct
23 Correct 3 ms 2396 KB Output is correct
24 Correct 3 ms 2396 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 4 ms 2396 KB Output is correct
27 Correct 4 ms 2396 KB Output is correct
28 Correct 4 ms 2140 KB Output is correct
29 Correct 4 ms 2392 KB Output is correct
30 Correct 4 ms 2136 KB Output is correct
31 Correct 4 ms 2140 KB Output is correct
32 Correct 3 ms 2252 KB Output is correct
33 Correct 6 ms 2140 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 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 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 3 ms 2396 KB Output is correct
19 Correct 3 ms 2396 KB Output is correct
20 Correct 3 ms 2540 KB Output is correct
21 Correct 3 ms 2396 KB Output is correct
22 Correct 3 ms 2396 KB Output is correct
23 Correct 3 ms 2396 KB Output is correct
24 Correct 3 ms 2396 KB Output is correct
25 Correct 134 ms 81400 KB Output is correct
26 Correct 131 ms 80576 KB Output is correct
27 Correct 126 ms 81600 KB Output is correct
28 Correct 166 ms 80320 KB Output is correct
29 Correct 175 ms 80376 KB Output is correct
30 Correct 163 ms 80576 KB Output is correct
31 Correct 166 ms 81476 KB Output is correct

Subtask #6
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 172 ms 69620 KB Output is correct
4 Correct 171 ms 73664 KB Output is correct
5 Correct 176 ms 74180 KB Output is correct

Subtask #7
26.0 / 26.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 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 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 3 ms 2396 KB Output is correct
19 Correct 3 ms 2396 KB Output is correct
20 Correct 3 ms 2540 KB Output is correct
21 Correct 3 ms 2396 KB Output is correct
22 Correct 3 ms 2396 KB Output is correct
23 Correct 3 ms 2396 KB Output is correct
24 Correct 3 ms 2396 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 4 ms 2396 KB Output is correct
27 Correct 4 ms 2396 KB Output is correct
28 Correct 4 ms 2140 KB Output is correct
29 Correct 4 ms 2392 KB Output is correct
30 Correct 4 ms 2136 KB Output is correct
31 Correct 4 ms 2140 KB Output is correct
32 Correct 3 ms 2252 KB Output is correct
33 Correct 6 ms 2140 KB Output is correct
34 Correct 134 ms 81400 KB Output is correct
35 Correct 131 ms 80576 KB Output is correct
36 Correct 126 ms 81600 KB Output is correct
37 Correct 166 ms 80320 KB Output is correct
38 Correct 175 ms 80376 KB Output is correct
39 Correct 163 ms 80576 KB Output is correct
40 Correct 166 ms 81476 KB Output is correct
41 Correct 1 ms 344 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 172 ms 69620 KB Output is correct
44 Correct 171 ms 73664 KB Output is correct
45 Correct 176 ms 74180 KB Output is correct
46 Correct 336 ms 78532 KB Output is correct
47 Correct 289 ms 78944 KB Output is correct
48 Correct 274 ms 81024 KB Output is correct
49 Correct 324 ms 78940 KB Output is correct
50 Correct 273 ms 72908 KB Output is correct
51 Correct 257 ms 73248 KB Output is correct
52 Correct 243 ms 73596 KB Output is correct
53 Correct 282 ms 73720 KB Output is correct