답안 #106174

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
106174	2019-04-17T04:07:37 Z	mzhao	Mergers (JOI19_mergers)	C++11	100 / 100	1811 ms	177340 KB

mergers

#include <bits/stdc++.h>
using namespace std;

#define MN 500100
#define x first
#define y second

int N, K, S[MN], tot[MN], ans, g[MN];
vector<int> adj[MN], adj2[MN];
bool bad[MN];
map<int, int>* m[MN];

int f(int x) { if (g[x] != x) g[x] = f(g[x]); return g[x]; }
void merge(int a, int b) { if (f(a) != f(b)) g[f(a)] = f(b); }

map<int, int>* dfs(int n, int p) {
	m[n] = new map<int, int>;
	if (tot[S[n]] > 1) (*m[n])[S[n]] = 1;
	for (int i : adj[n]) if (i != p) {
		map<int, int>* cur = dfs(i, n);
		if (cur->size() > m[n]->size()) swap(cur, m[n]);
		for (auto j : *cur) {
			(*m[n])[j.x] += j.y;
			if ((*m[n])[j.x] == tot[j.x]) m[n]->erase(j.x);
		}
	}
	if (p) {
		if (m[n]->size() == 0) bad[n] = 1;
		else merge(n, p);
	}
	return m[n];
}

void dfs2(int n, int p) {
	if (adj2[n].size() == 1) ans++;
	for (int i : adj2[n]) if (i != p) dfs2(i, n);
}

int main() {
	scanf("%d%d", &N, &K);
	for (int i = 1, A, B; i < N; i++) {
		scanf("%d%d", &A, &B);
		adj[A].push_back(B);
		adj[B].push_back(A);
	}
	for (int i = 1; i <= N; i++) {
		scanf("%d", &S[i]);
		tot[S[i]]++;
		g[i] = i;
	}
	dfs(1, 0);
	for (int i = 1; i <= N; i++) for (int j : adj[i]) {
		int a = f(i), b = f(j);
		if (a != b) adj2[a].push_back(b);
	}
	dfs2(f(1), 0);
	printf("%d\n", (ans+1)/2);
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:40:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &N, &K);
  ~~~~~^~~~~~~~~~~~~~~~
mergers.cpp:42:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &A, &B);
   ~~~~~^~~~~~~~~~~~~~~~
mergers.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &S[i]);
   ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	23808 KB	Output is correct
2	Correct	21 ms	23936 KB	Output is correct
3	Correct	21 ms	23808 KB	Output is correct
4	Correct	23 ms	23808 KB	Output is correct
5	Correct	23 ms	23808 KB	Output is correct
6	Correct	21 ms	23936 KB	Output is correct
7	Correct	21 ms	23804 KB	Output is correct
8	Correct	23 ms	23936 KB	Output is correct
9	Correct	24 ms	23808 KB	Output is correct
10	Correct	25 ms	23808 KB	Output is correct
11	Correct	25 ms	23936 KB	Output is correct
12	Correct	28 ms	23936 KB	Output is correct
13	Correct	25 ms	23856 KB	Output is correct
14	Correct	25 ms	23800 KB	Output is correct
15	Correct	29 ms	23908 KB	Output is correct
16	Correct	27 ms	23808 KB	Output is correct
17	Correct	25 ms	23876 KB	Output is correct
18	Correct	25 ms	23800 KB	Output is correct
19	Correct	26 ms	23808 KB	Output is correct
20	Correct	26 ms	23808 KB	Output is correct
21	Correct	22 ms	23936 KB	Output is correct
22	Correct	23 ms	23936 KB	Output is correct
23	Correct	24 ms	23800 KB	Output is correct
24	Correct	23 ms	23808 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	23808 KB	Output is correct
2	Correct	21 ms	23936 KB	Output is correct
3	Correct	21 ms	23808 KB	Output is correct
4	Correct	23 ms	23808 KB	Output is correct
5	Correct	23 ms	23808 KB	Output is correct
6	Correct	21 ms	23936 KB	Output is correct
7	Correct	21 ms	23804 KB	Output is correct
8	Correct	23 ms	23936 KB	Output is correct
9	Correct	24 ms	23808 KB	Output is correct
10	Correct	25 ms	23808 KB	Output is correct
11	Correct	25 ms	23936 KB	Output is correct
12	Correct	28 ms	23936 KB	Output is correct
13	Correct	25 ms	23856 KB	Output is correct
14	Correct	25 ms	23800 KB	Output is correct
15	Correct	29 ms	23908 KB	Output is correct
16	Correct	27 ms	23808 KB	Output is correct
17	Correct	25 ms	23876 KB	Output is correct
18	Correct	25 ms	23800 KB	Output is correct
19	Correct	26 ms	23808 KB	Output is correct
20	Correct	26 ms	23808 KB	Output is correct
21	Correct	22 ms	23936 KB	Output is correct
22	Correct	23 ms	23936 KB	Output is correct
23	Correct	24 ms	23800 KB	Output is correct
24	Correct	23 ms	23808 KB	Output is correct
25	Correct	26 ms	23908 KB	Output is correct
26	Correct	28 ms	24292 KB	Output is correct
27	Correct	32 ms	24316 KB	Output is correct
28	Correct	32 ms	24440 KB	Output is correct
29	Correct	28 ms	24208 KB	Output is correct
30	Correct	35 ms	24568 KB	Output is correct
31	Correct	25 ms	23808 KB	Output is correct
32	Correct	26 ms	24356 KB	Output is correct
33	Correct	22 ms	23808 KB	Output is correct
34	Correct	26 ms	24320 KB	Output is correct
35	Correct	32 ms	24312 KB	Output is correct
36	Correct	31 ms	24284 KB	Output is correct
37	Correct	29 ms	24568 KB	Output is correct
38	Correct	23 ms	23800 KB	Output is correct
39	Correct	30 ms	24576 KB	Output is correct
40	Correct	31 ms	24312 KB	Output is correct
41	Correct	26 ms	24320 KB	Output is correct
42	Correct	25 ms	24448 KB	Output is correct
43	Correct	25 ms	24576 KB	Output is correct
44	Correct	29 ms	23936 KB	Output is correct
45	Correct	26 ms	24348 KB	Output is correct
46	Correct	27 ms	24448 KB	Output is correct
47	Correct	25 ms	23936 KB	Output is correct
48	Correct	27 ms	24320 KB	Output is correct
49	Correct	25 ms	24320 KB	Output is correct
50	Correct	23 ms	24320 KB	Output is correct
51	Correct	28 ms	24440 KB	Output is correct
52	Correct	26 ms	24312 KB	Output is correct
53	Correct	25 ms	24320 KB	Output is correct
54	Correct	30 ms	24540 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	23808 KB	Output is correct
2	Correct	21 ms	23936 KB	Output is correct
3	Correct	21 ms	23808 KB	Output is correct
4	Correct	23 ms	23808 KB	Output is correct
5	Correct	23 ms	23808 KB	Output is correct
6	Correct	21 ms	23936 KB	Output is correct
7	Correct	21 ms	23804 KB	Output is correct
8	Correct	23 ms	23936 KB	Output is correct
9	Correct	24 ms	23808 KB	Output is correct
10	Correct	25 ms	23808 KB	Output is correct
11	Correct	25 ms	23936 KB	Output is correct
12	Correct	28 ms	23936 KB	Output is correct
13	Correct	25 ms	23856 KB	Output is correct
14	Correct	25 ms	23800 KB	Output is correct
15	Correct	29 ms	23908 KB	Output is correct
16	Correct	27 ms	23808 KB	Output is correct
17	Correct	25 ms	23876 KB	Output is correct
18	Correct	25 ms	23800 KB	Output is correct
19	Correct	26 ms	23808 KB	Output is correct
20	Correct	26 ms	23808 KB	Output is correct
21	Correct	22 ms	23936 KB	Output is correct
22	Correct	23 ms	23936 KB	Output is correct
23	Correct	24 ms	23800 KB	Output is correct
24	Correct	23 ms	23808 KB	Output is correct
25	Correct	23 ms	23808 KB	Output is correct
26	Correct	154 ms	41268 KB	Output is correct
27	Correct	216 ms	47796 KB	Output is correct
28	Correct	24 ms	24320 KB	Output is correct
29	Correct	22 ms	23936 KB	Output is correct
30	Correct	23 ms	23928 KB	Output is correct
31	Correct	148 ms	41052 KB	Output is correct
32	Correct	26 ms	24320 KB	Output is correct
33	Correct	201 ms	51064 KB	Output is correct
34	Correct	211 ms	46456 KB	Output is correct
35	Correct	28 ms	24320 KB	Output is correct
36	Correct	185 ms	42104 KB	Output is correct
37	Correct	27 ms	24320 KB	Output is correct
38	Correct	24 ms	24312 KB	Output is correct
39	Correct	130 ms	41172 KB	Output is correct
40	Correct	26 ms	24576 KB	Output is correct
41	Correct	189 ms	40940 KB	Output is correct
42	Correct	157 ms	44408 KB	Output is correct
43	Correct	21 ms	23808 KB	Output is correct
44	Correct	182 ms	51588 KB	Output is correct
45	Correct	198 ms	47352 KB	Output is correct
46	Correct	24 ms	24416 KB	Output is correct
47	Correct	24 ms	24448 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	121 ms	41200 KB	Output is correct
2	Correct	128 ms	40944 KB	Output is correct
3	Correct	25 ms	24312 KB	Output is correct
4	Correct	27 ms	24440 KB	Output is correct
5	Correct	22 ms	23928 KB	Output is correct
6	Correct	26 ms	23928 KB	Output is correct
7	Correct	23 ms	24320 KB	Output is correct
8	Correct	166 ms	44380 KB	Output is correct
9	Correct	28 ms	24320 KB	Output is correct
10	Correct	162 ms	41336 KB	Output is correct
11	Correct	22 ms	23936 KB	Output is correct
12	Correct	157 ms	41080 KB	Output is correct
13	Correct	206 ms	41308 KB	Output is correct
14	Correct	152 ms	40312 KB	Output is correct
15	Correct	145 ms	41232 KB	Output is correct
16	Correct	28 ms	24448 KB	Output is correct
17	Correct	25 ms	23936 KB	Output is correct
18	Correct	213 ms	41316 KB	Output is correct
19	Correct	186 ms	45688 KB	Output is correct
20	Correct	26 ms	24440 KB	Output is correct
21	Correct	26 ms	23800 KB	Output is correct
22	Correct	220 ms	41584 KB	Output is correct
23	Correct	27 ms	24312 KB	Output is correct
24	Correct	194 ms	41208 KB	Output is correct
25	Correct	238 ms	43896 KB	Output is correct
26	Correct	28 ms	24440 KB	Output is correct
27	Correct	24 ms	24312 KB	Output is correct
28	Correct	24 ms	24292 KB	Output is correct
29	Correct	24 ms	24312 KB	Output is correct
30	Correct	30 ms	24320 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	23808 KB	Output is correct
2	Correct	21 ms	23936 KB	Output is correct
3	Correct	21 ms	23808 KB	Output is correct
4	Correct	23 ms	23808 KB	Output is correct
5	Correct	23 ms	23808 KB	Output is correct
6	Correct	21 ms	23936 KB	Output is correct
7	Correct	21 ms	23804 KB	Output is correct
8	Correct	23 ms	23936 KB	Output is correct
9	Correct	24 ms	23808 KB	Output is correct
10	Correct	25 ms	23808 KB	Output is correct
11	Correct	25 ms	23936 KB	Output is correct
12	Correct	28 ms	23936 KB	Output is correct
13	Correct	25 ms	23856 KB	Output is correct
14	Correct	25 ms	23800 KB	Output is correct
15	Correct	29 ms	23908 KB	Output is correct
16	Correct	27 ms	23808 KB	Output is correct
17	Correct	25 ms	23876 KB	Output is correct
18	Correct	25 ms	23800 KB	Output is correct
19	Correct	26 ms	23808 KB	Output is correct
20	Correct	26 ms	23808 KB	Output is correct
21	Correct	22 ms	23936 KB	Output is correct
22	Correct	23 ms	23936 KB	Output is correct
23	Correct	24 ms	23800 KB	Output is correct
24	Correct	23 ms	23808 KB	Output is correct
25	Correct	26 ms	23908 KB	Output is correct
26	Correct	28 ms	24292 KB	Output is correct
27	Correct	32 ms	24316 KB	Output is correct
28	Correct	32 ms	24440 KB	Output is correct
29	Correct	28 ms	24208 KB	Output is correct
30	Correct	35 ms	24568 KB	Output is correct
31	Correct	25 ms	23808 KB	Output is correct
32	Correct	26 ms	24356 KB	Output is correct
33	Correct	22 ms	23808 KB	Output is correct
34	Correct	26 ms	24320 KB	Output is correct
35	Correct	32 ms	24312 KB	Output is correct
36	Correct	31 ms	24284 KB	Output is correct
37	Correct	29 ms	24568 KB	Output is correct
38	Correct	23 ms	23800 KB	Output is correct
39	Correct	30 ms	24576 KB	Output is correct
40	Correct	31 ms	24312 KB	Output is correct
41	Correct	26 ms	24320 KB	Output is correct
42	Correct	25 ms	24448 KB	Output is correct
43	Correct	25 ms	24576 KB	Output is correct
44	Correct	29 ms	23936 KB	Output is correct
45	Correct	26 ms	24348 KB	Output is correct
46	Correct	27 ms	24448 KB	Output is correct
47	Correct	25 ms	23936 KB	Output is correct
48	Correct	27 ms	24320 KB	Output is correct
49	Correct	25 ms	24320 KB	Output is correct
50	Correct	23 ms	24320 KB	Output is correct
51	Correct	28 ms	24440 KB	Output is correct
52	Correct	26 ms	24312 KB	Output is correct
53	Correct	25 ms	24320 KB	Output is correct
54	Correct	30 ms	24540 KB	Output is correct
55	Correct	23 ms	23808 KB	Output is correct
56	Correct	154 ms	41268 KB	Output is correct
57	Correct	216 ms	47796 KB	Output is correct
58	Correct	24 ms	24320 KB	Output is correct
59	Correct	22 ms	23936 KB	Output is correct
60	Correct	23 ms	23928 KB	Output is correct
61	Correct	148 ms	41052 KB	Output is correct
62	Correct	26 ms	24320 KB	Output is correct
63	Correct	201 ms	51064 KB	Output is correct
64	Correct	211 ms	46456 KB	Output is correct
65	Correct	28 ms	24320 KB	Output is correct
66	Correct	185 ms	42104 KB	Output is correct
67	Correct	27 ms	24320 KB	Output is correct
68	Correct	24 ms	24312 KB	Output is correct
69	Correct	130 ms	41172 KB	Output is correct
70	Correct	26 ms	24576 KB	Output is correct
71	Correct	189 ms	40940 KB	Output is correct
72	Correct	157 ms	44408 KB	Output is correct
73	Correct	21 ms	23808 KB	Output is correct
74	Correct	182 ms	51588 KB	Output is correct
75	Correct	198 ms	47352 KB	Output is correct
76	Correct	24 ms	24416 KB	Output is correct
77	Correct	24 ms	24448 KB	Output is correct
78	Correct	121 ms	41200 KB	Output is correct
79	Correct	128 ms	40944 KB	Output is correct
80	Correct	25 ms	24312 KB	Output is correct
81	Correct	27 ms	24440 KB	Output is correct
82	Correct	22 ms	23928 KB	Output is correct
83	Correct	26 ms	23928 KB	Output is correct
84	Correct	23 ms	24320 KB	Output is correct
85	Correct	166 ms	44380 KB	Output is correct
86	Correct	28 ms	24320 KB	Output is correct
87	Correct	162 ms	41336 KB	Output is correct
88	Correct	22 ms	23936 KB	Output is correct
89	Correct	157 ms	41080 KB	Output is correct
90	Correct	206 ms	41308 KB	Output is correct
91	Correct	152 ms	40312 KB	Output is correct
92	Correct	145 ms	41232 KB	Output is correct
93	Correct	28 ms	24448 KB	Output is correct
94	Correct	25 ms	23936 KB	Output is correct
95	Correct	213 ms	41316 KB	Output is correct
96	Correct	186 ms	45688 KB	Output is correct
97	Correct	26 ms	24440 KB	Output is correct
98	Correct	26 ms	23800 KB	Output is correct
99	Correct	220 ms	41584 KB	Output is correct
100	Correct	27 ms	24312 KB	Output is correct
101	Correct	194 ms	41208 KB	Output is correct
102	Correct	238 ms	43896 KB	Output is correct
103	Correct	28 ms	24440 KB	Output is correct
104	Correct	24 ms	24312 KB	Output is correct
105	Correct	24 ms	24292 KB	Output is correct
106	Correct	24 ms	24312 KB	Output is correct
107	Correct	30 ms	24320 KB	Output is correct
108	Correct	1487 ms	112856 KB	Output is correct
109	Correct	1248 ms	134612 KB	Output is correct
110	Correct	1309 ms	150288 KB	Output is correct
111	Correct	1317 ms	134904 KB	Output is correct
112	Correct	1085 ms	116180 KB	Output is correct
113	Correct	1105 ms	108248 KB	Output is correct
114	Correct	1120 ms	109076 KB	Output is correct
115	Correct	1173 ms	109120 KB	Output is correct
116	Correct	1440 ms	167216 KB	Output is correct
117	Correct	1095 ms	104316 KB	Output is correct
118	Correct	1079 ms	108036 KB	Output is correct
119	Correct	1235 ms	104184 KB	Output is correct
120	Correct	1300 ms	123500 KB	Output is correct
121	Correct	1109 ms	104092 KB	Output is correct
122	Correct	1811 ms	177340 KB	Output is correct
123	Correct	910 ms	107028 KB	Output is correct
124	Correct	1256 ms	96988 KB	Output is correct

답안 #106174

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