oj.uz

답안 #377744

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
377744 2021-03-14T22:32:12 Z peijar Mergers (JOI19_mergers) C++17
100 / 100
 859 ms 106696 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

vector<vector<int>> adj;
vector<int> etat;
vector<vector<int>> dansEtat;
vector<int> profondeur;
vector<int> parent;
vector<int> id;
int nbSommets, nbEtats;

void dfs(int u, int p)
{
	for (auto v : adj[u])
		if (v != p)
		{
			profondeur[v] = profondeur[u] + 1;
			parent[v] = u;
			dfs(v, u);
		}
}

int find(int u)
{
	return id[u] = (u == id[u] ? u : find(id[u]));
}

signed main(void)
{
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	
	cin >> nbSommets >> nbEtats;
	vector<pair<int, int>> aretes;
	id.resize(nbSommets);
	for (int i(0); i < nbSommets; ++i)
		id[i] = i;
	adj.resize(nbSommets);
	etat.resize(nbSommets);
	dansEtat.resize(nbEtats);
	parent.resize(nbSommets);
	profondeur.resize(nbSommets);
	for (int i(1); i < nbSommets; ++i)
	{
		int u, v;
		cin >> u >> v;
		--u, --v;
		aretes.emplace_back(u, v);
		adj[u].push_back(v);
		adj[v].push_back(u);
	}

	for (int i(0); i < nbSommets; ++i)
	{
		cin >> etat[i];
		--etat[i];
		dansEtat[etat[i]].push_back(i);
	}

	dfs(0, 0);

	for (int iEtat(0); iEtat < nbEtats; ++iEtat)
	{
		for (int i(1); i < (int)dansEtat[iEtat].size(); ++i)
		{
			int u = dansEtat[iEtat][i-1], v = dansEtat[iEtat][i];
			u = find(u), v = find(v);
			while (u != v)
			{
				if (profondeur[u] < profondeur[v]) swap(u, v);
				id[u] = find(id[parent[u]]);
				u = id[u];
			}
		}
	}
  
	vector<int> deg(nbSommets);
	for (auto [u, v] : aretes)
	{
		u = find(u), v = find(v);
		if (u != v)
			deg[u]++, deg[v]++;
	}
	int nbFeuilles(0);
	for (auto d : deg)
		nbFeuilles += d == 1;
	int sol = (nbFeuilles + 1)/2;
	cout << sol << endl;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 3 ms 876 KB Output is correct
27 Correct 2 ms 748 KB Output is correct
28 Correct 3 ms 1004 KB Output is correct
29 Correct 3 ms 896 KB Output is correct
30 Correct 2 ms 748 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 3 ms 1004 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 2 ms 876 KB Output is correct
35 Correct 2 ms 876 KB Output is correct
36 Correct 2 ms 748 KB Output is correct
37 Correct 2 ms 876 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 3 ms 876 KB Output is correct
40 Correct 2 ms 748 KB Output is correct
41 Correct 2 ms 748 KB Output is correct
42 Correct 2 ms 876 KB Output is correct
43 Correct 3 ms 876 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 3 ms 876 KB Output is correct
46 Correct 3 ms 876 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 3 ms 768 KB Output is correct
49 Correct 2 ms 876 KB Output is correct
50 Correct 3 ms 876 KB Output is correct
51 Correct 2 ms 748 KB Output is correct
52 Correct 2 ms 748 KB Output is correct
53 Correct 2 ms 876 KB Output is correct
54 Correct 2 ms 748 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 64 ms 14684 KB Output is correct
27 Correct 101 ms 14428 KB Output is correct
28 Correct 2 ms 748 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 86 ms 14300 KB Output is correct
32 Correct 2 ms 748 KB Output is correct
33 Correct 112 ms 18140 KB Output is correct
34 Correct 89 ms 14428 KB Output is correct
35 Correct 2 ms 748 KB Output is correct
36 Correct 101 ms 14172 KB Output is correct
37 Correct 2 ms 748 KB Output is correct
38 Correct 2 ms 748 KB Output is correct
39 Correct 64 ms 14556 KB Output is correct
40 Correct 3 ms 876 KB Output is correct
41 Correct 83 ms 14300 KB Output is correct
42 Correct 99 ms 15196 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 106 ms 18512 KB Output is correct
45 Correct 99 ms 17372 KB Output is correct
46 Correct 2 ms 748 KB Output is correct
47 Correct 2 ms 748 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 64 ms 13148 KB Output is correct
2 Correct 78 ms 17628 KB Output is correct
3 Correct 2 ms 876 KB Output is correct
4 Correct 2 ms 748 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 2 ms 748 KB Output is correct
8 Correct 114 ms 16604 KB Output is correct
9 Correct 2 ms 748 KB Output is correct
10 Correct 91 ms 14684 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 96 ms 14044 KB Output is correct
13 Correct 108 ms 16604 KB Output is correct
14 Correct 91 ms 19164 KB Output is correct
15 Correct 66 ms 14556 KB Output is correct
16 Correct 2 ms 896 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 77 ms 18780 KB Output is correct
19 Correct 100 ms 20956 KB Output is correct
20 Correct 3 ms 896 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 81 ms 16732 KB Output is correct
23 Correct 2 ms 748 KB Output is correct
24 Correct 107 ms 15068 KB Output is correct
25 Correct 99 ms 20956 KB Output is correct
26 Correct 2 ms 876 KB Output is correct
27 Correct 3 ms 876 KB Output is correct
28 Correct 3 ms 876 KB Output is correct
29 Correct 2 ms 748 KB Output is correct
30 Correct 2 ms 876 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 3 ms 876 KB Output is correct
27 Correct 2 ms 748 KB Output is correct
28 Correct 3 ms 1004 KB Output is correct
29 Correct 3 ms 896 KB Output is correct
30 Correct 2 ms 748 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 3 ms 1004 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 2 ms 876 KB Output is correct
35 Correct 2 ms 876 KB Output is correct
36 Correct 2 ms 748 KB Output is correct
37 Correct 2 ms 876 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 3 ms 876 KB Output is correct
40 Correct 2 ms 748 KB Output is correct
41 Correct 2 ms 748 KB Output is correct
42 Correct 2 ms 876 KB Output is correct
43 Correct 3 ms 876 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 3 ms 876 KB Output is correct
46 Correct 3 ms 876 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 3 ms 768 KB Output is correct
49 Correct 2 ms 876 KB Output is correct
50 Correct 3 ms 876 KB Output is correct
51 Correct 2 ms 748 KB Output is correct
52 Correct 2 ms 748 KB Output is correct
53 Correct 2 ms 876 KB Output is correct
54 Correct 2 ms 748 KB Output is correct
55 Correct 1 ms 364 KB Output is correct
56 Correct 64 ms 14684 KB Output is correct
57 Correct 101 ms 14428 KB Output is correct
58 Correct 2 ms 748 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 86 ms 14300 KB Output is correct
62 Correct 2 ms 748 KB Output is correct
63 Correct 112 ms 18140 KB Output is correct
64 Correct 89 ms 14428 KB Output is correct
65 Correct 2 ms 748 KB Output is correct
66 Correct 101 ms 14172 KB Output is correct
67 Correct 2 ms 748 KB Output is correct
68 Correct 2 ms 748 KB Output is correct
69 Correct 64 ms 14556 KB Output is correct
70 Correct 3 ms 876 KB Output is correct
71 Correct 83 ms 14300 KB Output is correct
72 Correct 99 ms 15196 KB Output is correct
73 Correct 1 ms 364 KB Output is correct
74 Correct 106 ms 18512 KB Output is correct
75 Correct 99 ms 17372 KB Output is correct
76 Correct 2 ms 748 KB Output is correct
77 Correct 2 ms 748 KB Output is correct
78 Correct 64 ms 13148 KB Output is correct
79 Correct 78 ms 17628 KB Output is correct
80 Correct 2 ms 876 KB Output is correct
81 Correct 2 ms 748 KB Output is correct
82 Correct 1 ms 364 KB Output is correct
83 Correct 1 ms 364 KB Output is correct
84 Correct 2 ms 748 KB Output is correct
85 Correct 114 ms 16604 KB Output is correct
86 Correct 2 ms 748 KB Output is correct
87 Correct 91 ms 14684 KB Output is correct
88 Correct 1 ms 364 KB Output is correct
89 Correct 96 ms 14044 KB Output is correct
90 Correct 108 ms 16604 KB Output is correct
91 Correct 91 ms 19164 KB Output is correct
92 Correct 66 ms 14556 KB Output is correct
93 Correct 2 ms 896 KB Output is correct
94 Correct 1 ms 364 KB Output is correct
95 Correct 77 ms 18780 KB Output is correct
96 Correct 100 ms 20956 KB Output is correct
97 Correct 3 ms 896 KB Output is correct
98 Correct 1 ms 364 KB Output is correct
99 Correct 81 ms 16732 KB Output is correct
100 Correct 2 ms 748 KB Output is correct
101 Correct 107 ms 15068 KB Output is correct
102 Correct 99 ms 20956 KB Output is correct
103 Correct 2 ms 876 KB Output is correct
104 Correct 3 ms 876 KB Output is correct
105 Correct 3 ms 876 KB Output is correct
106 Correct 2 ms 748 KB Output is correct
107 Correct 2 ms 876 KB Output is correct
108 Correct 668 ms 82420 KB Output is correct
109 Correct 794 ms 81372 KB Output is correct
110 Correct 828 ms 84792 KB Output is correct
111 Correct 783 ms 106696 KB Output is correct
112 Correct 859 ms 105032 KB Output is correct
113 Correct 641 ms 94024 KB Output is correct
114 Correct 679 ms 71240 KB Output is correct
115 Correct 642 ms 69960 KB Output is correct
116 Correct 849 ms 77684 KB Output is correct
117 Correct 705 ms 95580 KB Output is correct
118 Correct 703 ms 71768 KB Output is correct
119 Correct 700 ms 95572 KB Output is correct
120 Correct 744 ms 105416 KB Output is correct
121 Correct 693 ms 95688 KB Output is correct
122 Correct 855 ms 85448 KB Output is correct
123 Correct 574 ms 96584 KB Output is correct
124 Correct 803 ms 90956 KB Output is correct