답안 #112593

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
112593	2019-05-20T18:40:22 Z	Bruteforceman	Mergers (JOI19_mergers)	C++11	100 / 100	1398 ms	126668 KB

mergers

#include "bits/stdc++.h"
using namespace std;
int city[500010];
int cnt[500010];
vector <int> g[500010];
int P[500010];

int root(int x) {
	if(x == P[x]) return P[x];
	return P[x] = root(P[x]);
}
void join(int x, int y) {
	x = root(x);
	y = root(y);
	if(x != y) {
		P[x] = y;
	}
}

void dfs(int x, int par, map <int, int> &s) {
	if(cnt[city[x]] > 1) {
		s[city[x]] = 1;
	}
	for(auto i : g[x]) {
		if(i - par) {
			map <int, int> t;
			dfs(i, x, t);
			if(t.size() > s.size()) s.swap(t);
			for(auto j : t) {
				s[j.first] += j.second;
				if(cnt[j.first] == s[j.first]) {
					s.erase(j.first);
				} 
			}
		}
	}
	if(!s.empty()) {
		join(x, par);
	}
}

int l[500010], r[500010];
int deg[500010];

int main(int argc, char const *argv[])
{
	int n, m;
	scanf("%d %d", &n, &m);
	for(int i = 1; i < n; i++) {
		int p, q;
		scanf("%d %d", &p, &q);
		g[p].push_back(q);
		g[q].push_back(p);
		l[i] = p;
		r[i] = q;
	}
	for(int i = 1; i <= n; i++) {
		scanf("%d", &city[i]);
		cnt[city[i]] += 1;
		P[i] = i; 
	}
	map <int, int> s;
	dfs(1, 0, s);

	set <int> node;
	for(int i = 1; i <= n; i++) {
		node.insert(root(i));
	}
	for(int i = 1; i < n; i++) {
		if(root(l[i]) != root(r[i])) {
			++deg[root(l[i])];
			++deg[root(r[i])];
		}
	}
	int ans = 0;
	for(auto i : node) {
		if(deg[i] <= 1) {
			++ans;
		}
	}
	if(ans > 1) {
		ans = (ans + 1) / 2; 
	} else {
		ans = 0;
	}
	printf("%d\n", ans);
	return 0;
}

Compilation message

mergers.cpp: In function 'int main(int, const char**)':
mergers.cpp:48:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:51:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &p, &q);
   ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:58:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &city[i]);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	12 ms	12032 KB	Output is correct
2	Correct	12 ms	12032 KB	Output is correct
3	Correct	11 ms	12160 KB	Output is correct
4	Correct	14 ms	12160 KB	Output is correct
5	Correct	11 ms	12236 KB	Output is correct
6	Correct	12 ms	12160 KB	Output is correct
7	Correct	12 ms	12032 KB	Output is correct
8	Correct	12 ms	12160 KB	Output is correct
9	Correct	12 ms	12032 KB	Output is correct
10	Correct	12 ms	12160 KB	Output is correct
11	Correct	12 ms	12160 KB	Output is correct
12	Correct	12 ms	12160 KB	Output is correct
13	Correct	12 ms	12132 KB	Output is correct
14	Correct	12 ms	12160 KB	Output is correct
15	Correct	13 ms	12160 KB	Output is correct
16	Correct	11 ms	12160 KB	Output is correct
17	Correct	11 ms	12160 KB	Output is correct
18	Correct	11 ms	12160 KB	Output is correct
19	Correct	11 ms	12032 KB	Output is correct
20	Correct	12 ms	12132 KB	Output is correct
21	Correct	13 ms	12160 KB	Output is correct
22	Correct	11 ms	12160 KB	Output is correct
23	Correct	11 ms	12160 KB	Output is correct
24	Correct	12 ms	12160 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	12 ms	12032 KB	Output is correct
2	Correct	12 ms	12032 KB	Output is correct
3	Correct	11 ms	12160 KB	Output is correct
4	Correct	14 ms	12160 KB	Output is correct
5	Correct	11 ms	12236 KB	Output is correct
6	Correct	12 ms	12160 KB	Output is correct
7	Correct	12 ms	12032 KB	Output is correct
8	Correct	12 ms	12160 KB	Output is correct
9	Correct	12 ms	12032 KB	Output is correct
10	Correct	12 ms	12160 KB	Output is correct
11	Correct	12 ms	12160 KB	Output is correct
12	Correct	12 ms	12160 KB	Output is correct
13	Correct	12 ms	12132 KB	Output is correct
14	Correct	12 ms	12160 KB	Output is correct
15	Correct	13 ms	12160 KB	Output is correct
16	Correct	11 ms	12160 KB	Output is correct
17	Correct	11 ms	12160 KB	Output is correct
18	Correct	11 ms	12160 KB	Output is correct
19	Correct	11 ms	12032 KB	Output is correct
20	Correct	12 ms	12132 KB	Output is correct
21	Correct	13 ms	12160 KB	Output is correct
22	Correct	11 ms	12160 KB	Output is correct
23	Correct	11 ms	12160 KB	Output is correct
24	Correct	12 ms	12160 KB	Output is correct
25	Correct	20 ms	12032 KB	Output is correct
26	Correct	15 ms	12332 KB	Output is correct
27	Correct	14 ms	12288 KB	Output is correct
28	Correct	14 ms	12672 KB	Output is correct
29	Correct	14 ms	12416 KB	Output is correct
30	Correct	15 ms	12288 KB	Output is correct
31	Correct	12 ms	12152 KB	Output is correct
32	Correct	15 ms	12672 KB	Output is correct
33	Correct	12 ms	12160 KB	Output is correct
34	Correct	14 ms	12288 KB	Output is correct
35	Correct	14 ms	12388 KB	Output is correct
36	Correct	15 ms	12288 KB	Output is correct
37	Correct	15 ms	12288 KB	Output is correct
38	Correct	12 ms	12160 KB	Output is correct
39	Correct	15 ms	12416 KB	Output is correct
40	Correct	14 ms	12288 KB	Output is correct
41	Correct	14 ms	12288 KB	Output is correct
42	Correct	14 ms	12416 KB	Output is correct
43	Correct	14 ms	12972 KB	Output is correct
44	Correct	13 ms	12160 KB	Output is correct
45	Correct	14 ms	12416 KB	Output is correct
46	Correct	15 ms	12288 KB	Output is correct
47	Correct	12 ms	12160 KB	Output is correct
48	Correct	14 ms	12288 KB	Output is correct
49	Correct	14 ms	12416 KB	Output is correct
50	Correct	15 ms	12544 KB	Output is correct
51	Correct	14 ms	12288 KB	Output is correct
52	Correct	13 ms	12288 KB	Output is correct
53	Correct	15 ms	12288 KB	Output is correct
54	Correct	14 ms	12288 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	12 ms	12032 KB	Output is correct
2	Correct	12 ms	12032 KB	Output is correct
3	Correct	11 ms	12160 KB	Output is correct
4	Correct	14 ms	12160 KB	Output is correct
5	Correct	11 ms	12236 KB	Output is correct
6	Correct	12 ms	12160 KB	Output is correct
7	Correct	12 ms	12032 KB	Output is correct
8	Correct	12 ms	12160 KB	Output is correct
9	Correct	12 ms	12032 KB	Output is correct
10	Correct	12 ms	12160 KB	Output is correct
11	Correct	12 ms	12160 KB	Output is correct
12	Correct	12 ms	12160 KB	Output is correct
13	Correct	12 ms	12132 KB	Output is correct
14	Correct	12 ms	12160 KB	Output is correct
15	Correct	13 ms	12160 KB	Output is correct
16	Correct	11 ms	12160 KB	Output is correct
17	Correct	11 ms	12160 KB	Output is correct
18	Correct	11 ms	12160 KB	Output is correct
19	Correct	11 ms	12032 KB	Output is correct
20	Correct	12 ms	12132 KB	Output is correct
21	Correct	13 ms	12160 KB	Output is correct
22	Correct	11 ms	12160 KB	Output is correct
23	Correct	11 ms	12160 KB	Output is correct
24	Correct	12 ms	12160 KB	Output is correct
25	Correct	12 ms	12160 KB	Output is correct
26	Correct	85 ms	18604 KB	Output is correct
27	Correct	142 ms	18512 KB	Output is correct
28	Correct	14 ms	12416 KB	Output is correct
29	Correct	12 ms	12032 KB	Output is correct
30	Correct	11 ms	12160 KB	Output is correct
31	Correct	116 ms	18680 KB	Output is correct
32	Correct	13 ms	12288 KB	Output is correct
33	Correct	138 ms	38580 KB	Output is correct
34	Correct	136 ms	18296 KB	Output is correct
35	Correct	14 ms	12288 KB	Output is correct
36	Correct	134 ms	20728 KB	Output is correct
37	Correct	14 ms	12288 KB	Output is correct
38	Correct	14 ms	12288 KB	Output is correct
39	Correct	101 ms	18688 KB	Output is correct
40	Correct	14 ms	12928 KB	Output is correct
41	Correct	128 ms	18272 KB	Output is correct
42	Correct	137 ms	25080 KB	Output is correct
43	Correct	12 ms	12160 KB	Output is correct
44	Correct	143 ms	39416 KB	Output is correct
45	Correct	137 ms	30072 KB	Output is correct
46	Correct	13 ms	12288 KB	Output is correct
47	Correct	14 ms	12288 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	89 ms	18672 KB	Output is correct
2	Correct	102 ms	24532 KB	Output is correct
3	Correct	15 ms	12388 KB	Output is correct
4	Correct	14 ms	12416 KB	Output is correct
5	Correct	12 ms	12160 KB	Output is correct
6	Correct	11 ms	12160 KB	Output is correct
7	Correct	13 ms	12288 KB	Output is correct
8	Correct	153 ms	19704 KB	Output is correct
9	Correct	14 ms	12288 KB	Output is correct
10	Correct	122 ms	18936 KB	Output is correct
11	Correct	13 ms	12160 KB	Output is correct
12	Correct	134 ms	18956 KB	Output is correct
13	Correct	137 ms	20088 KB	Output is correct
14	Correct	121 ms	24224 KB	Output is correct
15	Correct	88 ms	18544 KB	Output is correct
16	Correct	15 ms	12416 KB	Output is correct
17	Correct	15 ms	12152 KB	Output is correct
18	Correct	112 ms	23524 KB	Output is correct
19	Correct	152 ms	32888 KB	Output is correct
20	Correct	15 ms	12416 KB	Output is correct
21	Correct	11 ms	12032 KB	Output is correct
22	Correct	121 ms	20340 KB	Output is correct
23	Correct	14 ms	12288 KB	Output is correct
24	Correct	173 ms	19320 KB	Output is correct
25	Correct	145 ms	29944 KB	Output is correct
26	Correct	14 ms	12416 KB	Output is correct
27	Correct	15 ms	12544 KB	Output is correct
28	Correct	14 ms	12288 KB	Output is correct
29	Correct	14 ms	12288 KB	Output is correct
30	Correct	16 ms	12384 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	12 ms	12032 KB	Output is correct
2	Correct	12 ms	12032 KB	Output is correct
3	Correct	11 ms	12160 KB	Output is correct
4	Correct	14 ms	12160 KB	Output is correct
5	Correct	11 ms	12236 KB	Output is correct
6	Correct	12 ms	12160 KB	Output is correct
7	Correct	12 ms	12032 KB	Output is correct
8	Correct	12 ms	12160 KB	Output is correct
9	Correct	12 ms	12032 KB	Output is correct
10	Correct	12 ms	12160 KB	Output is correct
11	Correct	12 ms	12160 KB	Output is correct
12	Correct	12 ms	12160 KB	Output is correct
13	Correct	12 ms	12132 KB	Output is correct
14	Correct	12 ms	12160 KB	Output is correct
15	Correct	13 ms	12160 KB	Output is correct
16	Correct	11 ms	12160 KB	Output is correct
17	Correct	11 ms	12160 KB	Output is correct
18	Correct	11 ms	12160 KB	Output is correct
19	Correct	11 ms	12032 KB	Output is correct
20	Correct	12 ms	12132 KB	Output is correct
21	Correct	13 ms	12160 KB	Output is correct
22	Correct	11 ms	12160 KB	Output is correct
23	Correct	11 ms	12160 KB	Output is correct
24	Correct	12 ms	12160 KB	Output is correct
25	Correct	20 ms	12032 KB	Output is correct
26	Correct	15 ms	12332 KB	Output is correct
27	Correct	14 ms	12288 KB	Output is correct
28	Correct	14 ms	12672 KB	Output is correct
29	Correct	14 ms	12416 KB	Output is correct
30	Correct	15 ms	12288 KB	Output is correct
31	Correct	12 ms	12152 KB	Output is correct
32	Correct	15 ms	12672 KB	Output is correct
33	Correct	12 ms	12160 KB	Output is correct
34	Correct	14 ms	12288 KB	Output is correct
35	Correct	14 ms	12388 KB	Output is correct
36	Correct	15 ms	12288 KB	Output is correct
37	Correct	15 ms	12288 KB	Output is correct
38	Correct	12 ms	12160 KB	Output is correct
39	Correct	15 ms	12416 KB	Output is correct
40	Correct	14 ms	12288 KB	Output is correct
41	Correct	14 ms	12288 KB	Output is correct
42	Correct	14 ms	12416 KB	Output is correct
43	Correct	14 ms	12972 KB	Output is correct
44	Correct	13 ms	12160 KB	Output is correct
45	Correct	14 ms	12416 KB	Output is correct
46	Correct	15 ms	12288 KB	Output is correct
47	Correct	12 ms	12160 KB	Output is correct
48	Correct	14 ms	12288 KB	Output is correct
49	Correct	14 ms	12416 KB	Output is correct
50	Correct	15 ms	12544 KB	Output is correct
51	Correct	14 ms	12288 KB	Output is correct
52	Correct	13 ms	12288 KB	Output is correct
53	Correct	15 ms	12288 KB	Output is correct
54	Correct	14 ms	12288 KB	Output is correct
55	Correct	12 ms	12160 KB	Output is correct
56	Correct	85 ms	18604 KB	Output is correct
57	Correct	142 ms	18512 KB	Output is correct
58	Correct	14 ms	12416 KB	Output is correct
59	Correct	12 ms	12032 KB	Output is correct
60	Correct	11 ms	12160 KB	Output is correct
61	Correct	116 ms	18680 KB	Output is correct
62	Correct	13 ms	12288 KB	Output is correct
63	Correct	138 ms	38580 KB	Output is correct
64	Correct	136 ms	18296 KB	Output is correct
65	Correct	14 ms	12288 KB	Output is correct
66	Correct	134 ms	20728 KB	Output is correct
67	Correct	14 ms	12288 KB	Output is correct
68	Correct	14 ms	12288 KB	Output is correct
69	Correct	101 ms	18688 KB	Output is correct
70	Correct	14 ms	12928 KB	Output is correct
71	Correct	128 ms	18272 KB	Output is correct
72	Correct	137 ms	25080 KB	Output is correct
73	Correct	12 ms	12160 KB	Output is correct
74	Correct	143 ms	39416 KB	Output is correct
75	Correct	137 ms	30072 KB	Output is correct
76	Correct	13 ms	12288 KB	Output is correct
77	Correct	14 ms	12288 KB	Output is correct
78	Correct	89 ms	18672 KB	Output is correct
79	Correct	102 ms	24532 KB	Output is correct
80	Correct	15 ms	12388 KB	Output is correct
81	Correct	14 ms	12416 KB	Output is correct
82	Correct	12 ms	12160 KB	Output is correct
83	Correct	11 ms	12160 KB	Output is correct
84	Correct	13 ms	12288 KB	Output is correct
85	Correct	153 ms	19704 KB	Output is correct
86	Correct	14 ms	12288 KB	Output is correct
87	Correct	122 ms	18936 KB	Output is correct
88	Correct	13 ms	12160 KB	Output is correct
89	Correct	134 ms	18956 KB	Output is correct
90	Correct	137 ms	20088 KB	Output is correct
91	Correct	121 ms	24224 KB	Output is correct
92	Correct	88 ms	18544 KB	Output is correct
93	Correct	15 ms	12416 KB	Output is correct
94	Correct	15 ms	12152 KB	Output is correct
95	Correct	112 ms	23524 KB	Output is correct
96	Correct	152 ms	32888 KB	Output is correct
97	Correct	15 ms	12416 KB	Output is correct
98	Correct	11 ms	12032 KB	Output is correct
99	Correct	121 ms	20340 KB	Output is correct
100	Correct	14 ms	12288 KB	Output is correct
101	Correct	173 ms	19320 KB	Output is correct
102	Correct	145 ms	29944 KB	Output is correct
103	Correct	14 ms	12416 KB	Output is correct
104	Correct	15 ms	12544 KB	Output is correct
105	Correct	14 ms	12288 KB	Output is correct
106	Correct	14 ms	12288 KB	Output is correct
107	Correct	16 ms	12384 KB	Output is correct
108	Correct	955 ms	55116 KB	Output is correct
109	Correct	849 ms	95204 KB	Output is correct
110	Correct	873 ms	126668 KB	Output is correct
111	Correct	900 ms	123196 KB	Output is correct
112	Correct	808 ms	92536 KB	Output is correct
113	Correct	628 ms	70240 KB	Output is correct
114	Correct	752 ms	43772 KB	Output is correct
115	Correct	765 ms	43824 KB	Output is correct
116	Correct	1118 ms	48908 KB	Output is correct
117	Correct	829 ms	73556 KB	Output is correct
118	Correct	780 ms	45708 KB	Output is correct
119	Correct	793 ms	73528 KB	Output is correct
120	Correct	872 ms	104988 KB	Output is correct
121	Correct	846 ms	73380 KB	Output is correct
122	Correct	1398 ms	57912 KB	Output is correct
123	Correct	582 ms	74980 KB	Output is correct
124	Correct	846 ms	64932 KB	Output is correct

답안 #112593

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