답안 #486617

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
486617	2021-11-12T06:44:13 Z	cheissmart	Mergers (JOI19_mergers)	C++14	100 / 100	509 ms	52976 KB

mergers

#include <bits/stdc++.h>
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define MP make_pair
#define EB emplace_back
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

string _reset = "\u001b[0m", _yellow = "\u001b[33m", _bold = "\u001b[1m";
void DBG() { cerr << "]" << _reset << endl; }
template<class H, class...T> void DBG(H h, T ...t) {
	cerr << to_string(h);
	if(sizeof ...(t)) cerr << ", ";
	DBG(t...);
}
#ifdef CHEISSMART
#define debug(...) cerr << _yellow << _bold << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define debug(...)
#endif

const int INF = 1e9 + 7, N = 5e5 + 7;

vi G[N];

int p[N], lst[N], d[N], parent[N], deg[N];

void dfs(int u, int pa = 0) {
	d[u] = d[pa] + 1;
	parent[u] = pa;
	for(int v:G[u]) if(v != pa)
		dfs(v, u);
}

signed main()
{
	IO_OP;
	
	int n, k;
	cin >> n >> k;
	for(int i = 0; i < n - 1; i++) {
		int a, b;
		cin >> a >> b;
		G[a].PB(b);
		G[b].PB(a);
	}
	
	dfs(1);
	
	iota(p + 1, p + n + 1, 1);

	function<int(int)> find = [&] (int u) {
		return p[u] == u ? u : p[u] = find(p[u]); 
	};

	auto cover = [&] (int u, int v) {
		while(find(u) != find(v)){
			if(d[p[u]] > d[p[v]]) swap(u, v);
			p[p[v]] = parent[p[v]];
		}
	};
	
	for(int i = 1; i <= n; i++) {
		int s;
		cin >> s;
		if(lst[s])
			cover(lst[s], i);
		lst[s] = i;
	}
	
	for(int i = 1; i <= n; i++)
		for(int j:G[i]) if(find(i) != find(j))
			deg[p[i]]++;
	
			
	int cnt = 0;
	for(int i = 1; i <= n; i++)
		if(deg[i] == 1)	
			cnt++;
	cout << (cnt + 1) / 2 << '\n';
}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	12088 KB	Output is correct
2	Correct	6 ms	12072 KB	Output is correct
3	Correct	6 ms	12012 KB	Output is correct
4	Correct	5 ms	12048 KB	Output is correct
5	Correct	5 ms	11980 KB	Output is correct
6	Correct	5 ms	11980 KB	Output is correct
7	Correct	6 ms	11980 KB	Output is correct
8	Correct	5 ms	12108 KB	Output is correct
9	Correct	6 ms	11980 KB	Output is correct
10	Correct	5 ms	12064 KB	Output is correct
11	Correct	6 ms	12108 KB	Output is correct
12	Correct	6 ms	11980 KB	Output is correct
13	Correct	5 ms	12060 KB	Output is correct
14	Correct	6 ms	11980 KB	Output is correct
15	Correct	5 ms	11980 KB	Output is correct
16	Correct	6 ms	12032 KB	Output is correct
17	Correct	6 ms	12008 KB	Output is correct
18	Correct	5 ms	12108 KB	Output is correct
19	Correct	6 ms	11980 KB	Output is correct
20	Correct	5 ms	11980 KB	Output is correct
21	Correct	6 ms	11980 KB	Output is correct
22	Correct	6 ms	11980 KB	Output is correct
23	Correct	5 ms	11980 KB	Output is correct
24	Correct	6 ms	11980 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	12088 KB	Output is correct
2	Correct	6 ms	12072 KB	Output is correct
3	Correct	6 ms	12012 KB	Output is correct
4	Correct	5 ms	12048 KB	Output is correct
5	Correct	5 ms	11980 KB	Output is correct
6	Correct	5 ms	11980 KB	Output is correct
7	Correct	6 ms	11980 KB	Output is correct
8	Correct	5 ms	12108 KB	Output is correct
9	Correct	6 ms	11980 KB	Output is correct
10	Correct	5 ms	12064 KB	Output is correct
11	Correct	6 ms	12108 KB	Output is correct
12	Correct	6 ms	11980 KB	Output is correct
13	Correct	5 ms	12060 KB	Output is correct
14	Correct	6 ms	11980 KB	Output is correct
15	Correct	5 ms	11980 KB	Output is correct
16	Correct	6 ms	12032 KB	Output is correct
17	Correct	6 ms	12008 KB	Output is correct
18	Correct	5 ms	12108 KB	Output is correct
19	Correct	6 ms	11980 KB	Output is correct
20	Correct	5 ms	11980 KB	Output is correct
21	Correct	6 ms	11980 KB	Output is correct
22	Correct	6 ms	11980 KB	Output is correct
23	Correct	5 ms	11980 KB	Output is correct
24	Correct	6 ms	11980 KB	Output is correct
25	Correct	5 ms	12064 KB	Output is correct
26	Correct	7 ms	12252 KB	Output is correct
27	Correct	7 ms	12236 KB	Output is correct
28	Correct	7 ms	12336 KB	Output is correct
29	Correct	7 ms	12196 KB	Output is correct
30	Correct	7 ms	12212 KB	Output is correct
31	Correct	6 ms	11980 KB	Output is correct
32	Correct	7 ms	12328 KB	Output is correct
33	Correct	7 ms	11980 KB	Output is correct
34	Correct	7 ms	12192 KB	Output is correct
35	Correct	7 ms	12236 KB	Output is correct
36	Correct	7 ms	12236 KB	Output is correct
37	Correct	7 ms	12204 KB	Output is correct
38	Correct	6 ms	12108 KB	Output is correct
39	Correct	7 ms	12176 KB	Output is correct
40	Correct	7 ms	12236 KB	Output is correct
41	Correct	7 ms	12236 KB	Output is correct
42	Correct	7 ms	12236 KB	Output is correct
43	Correct	7 ms	12332 KB	Output is correct
44	Correct	6 ms	12056 KB	Output is correct
45	Correct	7 ms	12236 KB	Output is correct
46	Correct	7 ms	12188 KB	Output is correct
47	Correct	6 ms	12108 KB	Output is correct
48	Correct	7 ms	12236 KB	Output is correct
49	Correct	6 ms	12236 KB	Output is correct
50	Correct	7 ms	12236 KB	Output is correct
51	Correct	7 ms	12236 KB	Output is correct
52	Correct	7 ms	12236 KB	Output is correct
53	Correct	8 ms	12236 KB	Output is correct
54	Correct	9 ms	12236 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	12088 KB	Output is correct
2	Correct	6 ms	12072 KB	Output is correct
3	Correct	6 ms	12012 KB	Output is correct
4	Correct	5 ms	12048 KB	Output is correct
5	Correct	5 ms	11980 KB	Output is correct
6	Correct	5 ms	11980 KB	Output is correct
7	Correct	6 ms	11980 KB	Output is correct
8	Correct	5 ms	12108 KB	Output is correct
9	Correct	6 ms	11980 KB	Output is correct
10	Correct	5 ms	12064 KB	Output is correct
11	Correct	6 ms	12108 KB	Output is correct
12	Correct	6 ms	11980 KB	Output is correct
13	Correct	5 ms	12060 KB	Output is correct
14	Correct	6 ms	11980 KB	Output is correct
15	Correct	5 ms	11980 KB	Output is correct
16	Correct	6 ms	12032 KB	Output is correct
17	Correct	6 ms	12008 KB	Output is correct
18	Correct	5 ms	12108 KB	Output is correct
19	Correct	6 ms	11980 KB	Output is correct
20	Correct	5 ms	11980 KB	Output is correct
21	Correct	6 ms	11980 KB	Output is correct
22	Correct	6 ms	11980 KB	Output is correct
23	Correct	5 ms	11980 KB	Output is correct
24	Correct	6 ms	11980 KB	Output is correct
25	Correct	6 ms	11980 KB	Output is correct
26	Correct	43 ms	18128 KB	Output is correct
27	Correct	55 ms	17856 KB	Output is correct
28	Correct	7 ms	12236 KB	Output is correct
29	Correct	6 ms	11980 KB	Output is correct
30	Correct	6 ms	11988 KB	Output is correct
31	Correct	56 ms	18000 KB	Output is correct
32	Correct	6 ms	12236 KB	Output is correct
33	Correct	61 ms	22176 KB	Output is correct
34	Correct	58 ms	17860 KB	Output is correct
35	Correct	7 ms	12236 KB	Output is correct
36	Correct	61 ms	18444 KB	Output is correct
37	Correct	7 ms	12236 KB	Output is correct
38	Correct	7 ms	12236 KB	Output is correct
39	Correct	43 ms	18072 KB	Output is correct
40	Correct	7 ms	12364 KB	Output is correct
41	Correct	58 ms	17840 KB	Output is correct
42	Correct	60 ms	19268 KB	Output is correct
43	Correct	6 ms	12108 KB	Output is correct
44	Correct	73 ms	22176 KB	Output is correct
45	Correct	69 ms	20032 KB	Output is correct
46	Correct	7 ms	12236 KB	Output is correct
47	Correct	7 ms	12236 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	47 ms	18172 KB	Output is correct
2	Correct	42 ms	19096 KB	Output is correct
3	Correct	9 ms	12260 KB	Output is correct
4	Correct	8 ms	12208 KB	Output is correct
5	Correct	8 ms	12064 KB	Output is correct
6	Correct	6 ms	11980 KB	Output is correct
7	Correct	9 ms	12180 KB	Output is correct
8	Correct	72 ms	18608 KB	Output is correct
9	Correct	9 ms	12236 KB	Output is correct
10	Correct	68 ms	18396 KB	Output is correct
11	Correct	6 ms	12108 KB	Output is correct
12	Correct	62 ms	18336 KB	Output is correct
13	Correct	60 ms	18632 KB	Output is correct
14	Correct	56 ms	18864 KB	Output is correct
15	Correct	47 ms	18096 KB	Output is correct
16	Correct	7 ms	12236 KB	Output is correct
17	Correct	6 ms	12108 KB	Output is correct
18	Correct	47 ms	19196 KB	Output is correct
19	Correct	53 ms	21120 KB	Output is correct
20	Correct	7 ms	12236 KB	Output is correct
21	Correct	6 ms	12108 KB	Output is correct
22	Correct	47 ms	18996 KB	Output is correct
23	Correct	7 ms	12236 KB	Output is correct
24	Correct	68 ms	18428 KB	Output is correct
25	Correct	51 ms	20388 KB	Output is correct
26	Correct	7 ms	12264 KB	Output is correct
27	Correct	7 ms	12224 KB	Output is correct
28	Correct	7 ms	12236 KB	Output is correct
29	Correct	7 ms	12264 KB	Output is correct
30	Correct	7 ms	12204 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	12088 KB	Output is correct
2	Correct	6 ms	12072 KB	Output is correct
3	Correct	6 ms	12012 KB	Output is correct
4	Correct	5 ms	12048 KB	Output is correct
5	Correct	5 ms	11980 KB	Output is correct
6	Correct	5 ms	11980 KB	Output is correct
7	Correct	6 ms	11980 KB	Output is correct
8	Correct	5 ms	12108 KB	Output is correct
9	Correct	6 ms	11980 KB	Output is correct
10	Correct	5 ms	12064 KB	Output is correct
11	Correct	6 ms	12108 KB	Output is correct
12	Correct	6 ms	11980 KB	Output is correct
13	Correct	5 ms	12060 KB	Output is correct
14	Correct	6 ms	11980 KB	Output is correct
15	Correct	5 ms	11980 KB	Output is correct
16	Correct	6 ms	12032 KB	Output is correct
17	Correct	6 ms	12008 KB	Output is correct
18	Correct	5 ms	12108 KB	Output is correct
19	Correct	6 ms	11980 KB	Output is correct
20	Correct	5 ms	11980 KB	Output is correct
21	Correct	6 ms	11980 KB	Output is correct
22	Correct	6 ms	11980 KB	Output is correct
23	Correct	5 ms	11980 KB	Output is correct
24	Correct	6 ms	11980 KB	Output is correct
25	Correct	5 ms	12064 KB	Output is correct
26	Correct	7 ms	12252 KB	Output is correct
27	Correct	7 ms	12236 KB	Output is correct
28	Correct	7 ms	12336 KB	Output is correct
29	Correct	7 ms	12196 KB	Output is correct
30	Correct	7 ms	12212 KB	Output is correct
31	Correct	6 ms	11980 KB	Output is correct
32	Correct	7 ms	12328 KB	Output is correct
33	Correct	7 ms	11980 KB	Output is correct
34	Correct	7 ms	12192 KB	Output is correct
35	Correct	7 ms	12236 KB	Output is correct
36	Correct	7 ms	12236 KB	Output is correct
37	Correct	7 ms	12204 KB	Output is correct
38	Correct	6 ms	12108 KB	Output is correct
39	Correct	7 ms	12176 KB	Output is correct
40	Correct	7 ms	12236 KB	Output is correct
41	Correct	7 ms	12236 KB	Output is correct
42	Correct	7 ms	12236 KB	Output is correct
43	Correct	7 ms	12332 KB	Output is correct
44	Correct	6 ms	12056 KB	Output is correct
45	Correct	7 ms	12236 KB	Output is correct
46	Correct	7 ms	12188 KB	Output is correct
47	Correct	6 ms	12108 KB	Output is correct
48	Correct	7 ms	12236 KB	Output is correct
49	Correct	6 ms	12236 KB	Output is correct
50	Correct	7 ms	12236 KB	Output is correct
51	Correct	7 ms	12236 KB	Output is correct
52	Correct	7 ms	12236 KB	Output is correct
53	Correct	8 ms	12236 KB	Output is correct
54	Correct	9 ms	12236 KB	Output is correct
55	Correct	6 ms	11980 KB	Output is correct
56	Correct	43 ms	18128 KB	Output is correct
57	Correct	55 ms	17856 KB	Output is correct
58	Correct	7 ms	12236 KB	Output is correct
59	Correct	6 ms	11980 KB	Output is correct
60	Correct	6 ms	11988 KB	Output is correct
61	Correct	56 ms	18000 KB	Output is correct
62	Correct	6 ms	12236 KB	Output is correct
63	Correct	61 ms	22176 KB	Output is correct
64	Correct	58 ms	17860 KB	Output is correct
65	Correct	7 ms	12236 KB	Output is correct
66	Correct	61 ms	18444 KB	Output is correct
67	Correct	7 ms	12236 KB	Output is correct
68	Correct	7 ms	12236 KB	Output is correct
69	Correct	43 ms	18072 KB	Output is correct
70	Correct	7 ms	12364 KB	Output is correct
71	Correct	58 ms	17840 KB	Output is correct
72	Correct	60 ms	19268 KB	Output is correct
73	Correct	6 ms	12108 KB	Output is correct
74	Correct	73 ms	22176 KB	Output is correct
75	Correct	69 ms	20032 KB	Output is correct
76	Correct	7 ms	12236 KB	Output is correct
77	Correct	7 ms	12236 KB	Output is correct
78	Correct	47 ms	18172 KB	Output is correct
79	Correct	42 ms	19096 KB	Output is correct
80	Correct	9 ms	12260 KB	Output is correct
81	Correct	8 ms	12208 KB	Output is correct
82	Correct	8 ms	12064 KB	Output is correct
83	Correct	6 ms	11980 KB	Output is correct
84	Correct	9 ms	12180 KB	Output is correct
85	Correct	72 ms	18608 KB	Output is correct
86	Correct	9 ms	12236 KB	Output is correct
87	Correct	68 ms	18396 KB	Output is correct
88	Correct	6 ms	12108 KB	Output is correct
89	Correct	62 ms	18336 KB	Output is correct
90	Correct	60 ms	18632 KB	Output is correct
91	Correct	56 ms	18864 KB	Output is correct
92	Correct	47 ms	18096 KB	Output is correct
93	Correct	7 ms	12236 KB	Output is correct
94	Correct	6 ms	12108 KB	Output is correct
95	Correct	47 ms	19196 KB	Output is correct
96	Correct	53 ms	21120 KB	Output is correct
97	Correct	7 ms	12236 KB	Output is correct
98	Correct	6 ms	12108 KB	Output is correct
99	Correct	47 ms	18996 KB	Output is correct
100	Correct	7 ms	12236 KB	Output is correct
101	Correct	68 ms	18428 KB	Output is correct
102	Correct	51 ms	20388 KB	Output is correct
103	Correct	7 ms	12264 KB	Output is correct
104	Correct	7 ms	12224 KB	Output is correct
105	Correct	7 ms	12236 KB	Output is correct
106	Correct	7 ms	12264 KB	Output is correct
107	Correct	7 ms	12204 KB	Output is correct
108	Correct	303 ms	39688 KB	Output is correct
109	Correct	507 ms	46276 KB	Output is correct
110	Correct	509 ms	52756 KB	Output is correct
111	Correct	475 ms	52976 KB	Output is correct
112	Correct	483 ms	46976 KB	Output is correct
113	Correct	309 ms	40456 KB	Output is correct
114	Correct	429 ms	35432 KB	Output is correct
115	Correct	442 ms	35396 KB	Output is correct
116	Correct	459 ms	37444 KB	Output is correct
117	Correct	400 ms	39192 KB	Output is correct
118	Correct	439 ms	36548 KB	Output is correct
119	Correct	406 ms	39208 KB	Output is correct
120	Correct	427 ms	47188 KB	Output is correct
121	Correct	393 ms	39048 KB	Output is correct
122	Correct	466 ms	38272 KB	Output is correct
123	Correct	249 ms	40240 KB	Output is correct
124	Correct	456 ms	38100 KB	Output is correct

답안 #486617

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