답안 #417470

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
417470	2021-06-03T18:43:32 Z	shivensinha4	Mergers (JOI19_mergers)	C++17	100 / 100	1295 ms	152372 KB

mergers

#include <bits/stdc++.h>
#ifdef mlocal
#include "./Competitive-Code-Library/snippets/prettyprint.h"
#endif
using namespace std;
#define for_(i, s, e) for (int i = s; i < (int) e; i++)
#define for__(i, s, e) for (ll i = s; i < e; i++)
typedef long long ll;
typedef vector<int> vi;
typedef array<int, 2> ii;
#define endl '\n'

int main() {
#ifdef mlocal
	freopen("test.in", "r", stdin);
#endif
	
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	int n, k; cin >> n >> k;
	vector<vi> adj(n);
	for_(i, 0, n-1) {
		int a, b; cin >> a >> b;
		a -= 1; b -= 1;
		adj[a].push_back(b); adj[b].push_back(a);
	}
	vi st(n), ct(n);
	for_(i, 0, n) {
		cin >> st[i];
		st[i] -= 1;
		ct[st[i]]++;
	}
	
	vector<map<int, int>> mp(n);
	vi deg(n);
	
	function<void(int,int)> dfs = [&](int p, int parent) {
		if (ct[st[p]] != 1) mp[p][st[p]] = 1;
		
		for (auto i: adj[p]) if (i != parent) {
			dfs(i, p);
			if (!mp[i].size()) {
				deg[p]++;
				deg[i]++;
			}
			else {
				deg[p] += deg[i];
				deg[i] = 0;
			}
			
			if (mp[i].size() > mp[p].size()) mp[p].swap(mp[i]);
			vi rem;
			for (auto &v: mp[i]) {
				mp[p][v.first] += v.second;
				if (mp[p][v.first] == ct[v.first]) rem.push_back(v.first);
			}
			
			for (auto v: rem) mp[p].erase(v);
		}
	};
	
	dfs(0, 0);
	int odd = 0;
	for_(i, 0, n) if (deg[i] == 1) odd++;
	cout << (odd+1)/2 << endl;
}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	312 KB	Output is correct
7	Correct	1 ms	320 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	316 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	308 KB	Output is correct
24	Correct	1 ms	204 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	312 KB	Output is correct
7	Correct	1 ms	320 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	316 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	308 KB	Output is correct
24	Correct	1 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	4 ms	716 KB	Output is correct
27	Correct	3 ms	844 KB	Output is correct
28	Correct	2 ms	972 KB	Output is correct
29	Correct	3 ms	588 KB	Output is correct
30	Correct	4 ms	972 KB	Output is correct
31	Correct	1 ms	204 KB	Output is correct
32	Correct	3 ms	1100 KB	Output is correct
33	Correct	1 ms	204 KB	Output is correct
34	Correct	2 ms	844 KB	Output is correct
35	Correct	2 ms	588 KB	Output is correct
36	Correct	2 ms	844 KB	Output is correct
37	Correct	4 ms	944 KB	Output is correct
38	Correct	1 ms	204 KB	Output is correct
39	Correct	4 ms	1100 KB	Output is correct
40	Correct	2 ms	836 KB	Output is correct
41	Correct	3 ms	844 KB	Output is correct
42	Correct	4 ms	840 KB	Output is correct
43	Correct	3 ms	1356 KB	Output is correct
44	Correct	1 ms	204 KB	Output is correct
45	Correct	3 ms	716 KB	Output is correct
46	Correct	4 ms	844 KB	Output is correct
47	Correct	1 ms	204 KB	Output is correct
48	Correct	3 ms	844 KB	Output is correct
49	Correct	2 ms	716 KB	Output is correct
50	Correct	2 ms	844 KB	Output is correct
51	Correct	3 ms	716 KB	Output is correct
52	Correct	2 ms	820 KB	Output is correct
53	Correct	3 ms	716 KB	Output is correct
54	Correct	3 ms	972 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	312 KB	Output is correct
7	Correct	1 ms	320 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	316 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	308 KB	Output is correct
24	Correct	1 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	89 ms	17212 KB	Output is correct
27	Correct	160 ms	23480 KB	Output is correct
28	Correct	2 ms	844 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	102 ms	16768 KB	Output is correct
32	Correct	2 ms	844 KB	Output is correct
33	Correct	147 ms	34212 KB	Output is correct
34	Correct	171 ms	22160 KB	Output is correct
35	Correct	2 ms	844 KB	Output is correct
36	Correct	130 ms	18776 KB	Output is correct
37	Correct	3 ms	844 KB	Output is correct
38	Correct	2 ms	844 KB	Output is correct
39	Correct	86 ms	17084 KB	Output is correct
40	Correct	3 ms	1348 KB	Output is correct
41	Correct	113 ms	16960 KB	Output is correct
42	Correct	122 ms	22532 KB	Output is correct
43	Correct	1 ms	332 KB	Output is correct
44	Correct	123 ms	34860 KB	Output is correct
45	Correct	138 ms	26952 KB	Output is correct
46	Correct	3 ms	844 KB	Output is correct
47	Correct	4 ms	972 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	89 ms	17156 KB	Output is correct
2	Correct	61 ms	12616 KB	Output is correct
3	Correct	3 ms	716 KB	Output is correct
4	Correct	2 ms	844 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	2 ms	844 KB	Output is correct
8	Correct	132 ms	19124 KB	Output is correct
9	Correct	2 ms	844 KB	Output is correct
10	Correct	106 ms	16768 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	117 ms	16792 KB	Output is correct
13	Correct	121 ms	15892 KB	Output is correct
14	Correct	89 ms	12096 KB	Output is correct
15	Correct	78 ms	17084 KB	Output is correct
16	Correct	3 ms	824 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	79 ms	13484 KB	Output is correct
19	Correct	98 ms	21692 KB	Output is correct
20	Correct	3 ms	844 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	112 ms	16184 KB	Output is correct
23	Correct	3 ms	844 KB	Output is correct
24	Correct	138 ms	16268 KB	Output is correct
25	Correct	101 ms	18500 KB	Output is correct
26	Correct	2 ms	716 KB	Output is correct
27	Correct	2 ms	844 KB	Output is correct
28	Correct	3 ms	836 KB	Output is correct
29	Correct	2 ms	844 KB	Output is correct
30	Correct	3 ms	716 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	312 KB	Output is correct
7	Correct	1 ms	320 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	316 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	308 KB	Output is correct
24	Correct	1 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	4 ms	716 KB	Output is correct
27	Correct	3 ms	844 KB	Output is correct
28	Correct	2 ms	972 KB	Output is correct
29	Correct	3 ms	588 KB	Output is correct
30	Correct	4 ms	972 KB	Output is correct
31	Correct	1 ms	204 KB	Output is correct
32	Correct	3 ms	1100 KB	Output is correct
33	Correct	1 ms	204 KB	Output is correct
34	Correct	2 ms	844 KB	Output is correct
35	Correct	2 ms	588 KB	Output is correct
36	Correct	2 ms	844 KB	Output is correct
37	Correct	4 ms	944 KB	Output is correct
38	Correct	1 ms	204 KB	Output is correct
39	Correct	4 ms	1100 KB	Output is correct
40	Correct	2 ms	836 KB	Output is correct
41	Correct	3 ms	844 KB	Output is correct
42	Correct	4 ms	840 KB	Output is correct
43	Correct	3 ms	1356 KB	Output is correct
44	Correct	1 ms	204 KB	Output is correct
45	Correct	3 ms	716 KB	Output is correct
46	Correct	4 ms	844 KB	Output is correct
47	Correct	1 ms	204 KB	Output is correct
48	Correct	3 ms	844 KB	Output is correct
49	Correct	2 ms	716 KB	Output is correct
50	Correct	2 ms	844 KB	Output is correct
51	Correct	3 ms	716 KB	Output is correct
52	Correct	2 ms	820 KB	Output is correct
53	Correct	3 ms	716 KB	Output is correct
54	Correct	3 ms	972 KB	Output is correct
55	Correct	1 ms	204 KB	Output is correct
56	Correct	89 ms	17212 KB	Output is correct
57	Correct	160 ms	23480 KB	Output is correct
58	Correct	2 ms	844 KB	Output is correct
59	Correct	1 ms	204 KB	Output is correct
60	Correct	1 ms	204 KB	Output is correct
61	Correct	102 ms	16768 KB	Output is correct
62	Correct	2 ms	844 KB	Output is correct
63	Correct	147 ms	34212 KB	Output is correct
64	Correct	171 ms	22160 KB	Output is correct
65	Correct	2 ms	844 KB	Output is correct
66	Correct	130 ms	18776 KB	Output is correct
67	Correct	3 ms	844 KB	Output is correct
68	Correct	2 ms	844 KB	Output is correct
69	Correct	86 ms	17084 KB	Output is correct
70	Correct	3 ms	1348 KB	Output is correct
71	Correct	113 ms	16960 KB	Output is correct
72	Correct	122 ms	22532 KB	Output is correct
73	Correct	1 ms	332 KB	Output is correct
74	Correct	123 ms	34860 KB	Output is correct
75	Correct	138 ms	26952 KB	Output is correct
76	Correct	3 ms	844 KB	Output is correct
77	Correct	4 ms	972 KB	Output is correct
78	Correct	89 ms	17156 KB	Output is correct
79	Correct	61 ms	12616 KB	Output is correct
80	Correct	3 ms	716 KB	Output is correct
81	Correct	2 ms	844 KB	Output is correct
82	Correct	1 ms	204 KB	Output is correct
83	Correct	1 ms	204 KB	Output is correct
84	Correct	2 ms	844 KB	Output is correct
85	Correct	132 ms	19124 KB	Output is correct
86	Correct	2 ms	844 KB	Output is correct
87	Correct	106 ms	16768 KB	Output is correct
88	Correct	1 ms	204 KB	Output is correct
89	Correct	117 ms	16792 KB	Output is correct
90	Correct	121 ms	15892 KB	Output is correct
91	Correct	89 ms	12096 KB	Output is correct
92	Correct	78 ms	17084 KB	Output is correct
93	Correct	3 ms	824 KB	Output is correct
94	Correct	1 ms	204 KB	Output is correct
95	Correct	79 ms	13484 KB	Output is correct
96	Correct	98 ms	21692 KB	Output is correct
97	Correct	3 ms	844 KB	Output is correct
98	Correct	1 ms	332 KB	Output is correct
99	Correct	112 ms	16184 KB	Output is correct
100	Correct	3 ms	844 KB	Output is correct
101	Correct	138 ms	16268 KB	Output is correct
102	Correct	101 ms	18500 KB	Output is correct
103	Correct	2 ms	716 KB	Output is correct
104	Correct	2 ms	844 KB	Output is correct
105	Correct	3 ms	836 KB	Output is correct
106	Correct	2 ms	844 KB	Output is correct
107	Correct	3 ms	716 KB	Output is correct
108	Correct	1041 ms	80716 KB	Output is correct
109	Correct	922 ms	125380 KB	Output is correct
110	Correct	874 ms	152372 KB	Output is correct
111	Correct	721 ms	114080 KB	Output is correct
112	Correct	681 ms	90880 KB	Output is correct
113	Correct	500 ms	64044 KB	Output is correct
114	Correct	727 ms	81444 KB	Output is correct
115	Correct	739 ms	81424 KB	Output is correct
116	Correct	1137 ms	138428 KB	Output is correct
117	Correct	585 ms	57784 KB	Output is correct
118	Correct	722 ms	79764 KB	Output is correct
119	Correct	583 ms	57796 KB	Output is correct
120	Correct	622 ms	92084 KB	Output is correct
121	Correct	603 ms	57856 KB	Output is correct
122	Correct	1295 ms	145840 KB	Output is correct
123	Correct	400 ms	59044 KB	Output is correct
124	Correct	620 ms	57012 KB	Output is correct

답안 #417470

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 24.0 / 24.0

Subtask #3 14.0 / 14.0

Subtask #4 22.0 / 22.0

Subtask #5 30.0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
24.0 / 24.0

Subtask #3
14.0 / 14.0

Subtask #4
22.0 / 22.0

Subtask #5
30.0 / 30.0