답안 #1114231

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1114231	2024-11-18T11:59:09 Z	Dan4Life	Mergers (JOI19_mergers)	C++17	34 / 100	3000 ms	56044 KB

mergers

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)

using ar2 = array<int,2>;
const int N = (int)5e5+10;
const int LINF = (int)1e18;
int n, k;
vector<int> adj[N];
int p[N], sz[N];
int a[N], tot[N], cnt[N], deg[N];
vector<int> v[N];

int findSet(int i){return i==p[i]?i:p[i]=findSet(p[i]);}
void unionSet(int i, int j){
	int x = findSet(i), y = findSet(j);
	if(x==y) return;
	if(sz[x]<sz[y])swap(x,y);
	p[y] = x, sz[x]+=sz[y];
}

void dfs(int s, int p){
	v[s].pb(a[s]);
	for(auto u : adj[s]){
		if(u==p) continue;
		dfs(u,s);
		if(sz(v[s]) < sz(v[u])) v[s].swap(v[u]);
		for(auto w : v[u]) v[s].pb(w);
	}
	int ok = 1; 
	map<int,int> cnt; cnt.clear();
	for(auto u : v[s]) cnt[u]++;
	for(auto u : v[s]) ok&=(cnt[u]==tot[u]);
	//for(auto u : v[s]) cnt[u]--;
	if(p and !ok) unionSet(s,p);
}

int32_t main(){
	ios_base::sync_with_stdio(false); cin.tie(0);
	cin >> n >> k;
	for(int i = 1; i <= n; i++) p[i]=i,sz[i]=1;
	for(int i = 1; i < n; i++){
		int a, b; cin >> a >> b;
		adj[a].pb(b); adj[b].pb(a);
	}
	for(int i = 1; i <= n; i++)
		cin >> a[i], tot[a[i]]++;
	dfs(1,0);
	for(int i = 1; i <= n; i++){
		int x = findSet(i);
		for(int j : adj[i])
			deg[x]+=(x!=findSet(j));
	}
	int cnt = 1;
	for(int i = 1; i <= n; i++) cnt+=(deg[i]==1);
	cout << cnt/2 << "\n";
}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	31568 KB	Output is correct
2	Correct	14 ms	24656 KB	Output is correct
3	Correct	18 ms	24656 KB	Output is correct
4	Correct	17 ms	23888 KB	Output is correct
5	Correct	23 ms	23888 KB	Output is correct
6	Correct	19 ms	23904 KB	Output is correct
7	Correct	19 ms	23888 KB	Output is correct
8	Correct	18 ms	23904 KB	Output is correct
9	Correct	18 ms	23780 KB	Output is correct
10	Correct	18 ms	23888 KB	Output is correct
11	Correct	7 ms	33616 KB	Output is correct
12	Correct	6 ms	33616 KB	Output is correct
13	Correct	5 ms	33576 KB	Output is correct
14	Correct	7 ms	33616 KB	Output is correct
15	Correct	6 ms	33460 KB	Output is correct
16	Correct	6 ms	33616 KB	Output is correct
17	Correct	6 ms	33616 KB	Output is correct
18	Correct	6 ms	33616 KB	Output is correct
19	Correct	6 ms	33616 KB	Output is correct
20	Correct	7 ms	33616 KB	Output is correct
21	Correct	6 ms	33616 KB	Output is correct
22	Correct	6 ms	33616 KB	Output is correct
23	Correct	6 ms	33576 KB	Output is correct
24	Correct	6 ms	33616 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	31568 KB	Output is correct
2	Correct	14 ms	24656 KB	Output is correct
3	Correct	18 ms	24656 KB	Output is correct
4	Correct	17 ms	23888 KB	Output is correct
5	Correct	23 ms	23888 KB	Output is correct
6	Correct	19 ms	23904 KB	Output is correct
7	Correct	19 ms	23888 KB	Output is correct
8	Correct	18 ms	23904 KB	Output is correct
9	Correct	18 ms	23780 KB	Output is correct
10	Correct	18 ms	23888 KB	Output is correct
11	Correct	7 ms	33616 KB	Output is correct
12	Correct	6 ms	33616 KB	Output is correct
13	Correct	5 ms	33576 KB	Output is correct
14	Correct	7 ms	33616 KB	Output is correct
15	Correct	6 ms	33460 KB	Output is correct
16	Correct	6 ms	33616 KB	Output is correct
17	Correct	6 ms	33616 KB	Output is correct
18	Correct	6 ms	33616 KB	Output is correct
19	Correct	6 ms	33616 KB	Output is correct
20	Correct	7 ms	33616 KB	Output is correct
21	Correct	6 ms	33616 KB	Output is correct
22	Correct	6 ms	33616 KB	Output is correct
23	Correct	6 ms	33576 KB	Output is correct
24	Correct	6 ms	33616 KB	Output is correct
25	Correct	6 ms	33616 KB	Output is correct
26	Correct	16 ms	33872 KB	Output is correct
27	Correct	11 ms	33872 KB	Output is correct
28	Correct	299 ms	34116 KB	Output is correct
29	Correct	12 ms	33872 KB	Output is correct
30	Correct	10 ms	33872 KB	Output is correct
31	Correct	6 ms	33784 KB	Output is correct
32	Correct	336 ms	34456 KB	Output is correct
33	Correct	6 ms	33616 KB	Output is correct
34	Correct	7 ms	33616 KB	Output is correct
35	Correct	14 ms	33872 KB	Output is correct
36	Correct	9 ms	33872 KB	Output is correct
37	Correct	19 ms	33952 KB	Output is correct
38	Correct	6 ms	33616 KB	Output is correct
39	Correct	11 ms	34028 KB	Output is correct
40	Correct	7 ms	33872 KB	Output is correct
41	Correct	7 ms	33888 KB	Output is correct
42	Correct	8 ms	33872 KB	Output is correct
43	Correct	23 ms	32296 KB	Output is correct
44	Correct	7 ms	33616 KB	Output is correct
45	Correct	144 ms	33872 KB	Output is correct
46	Correct	23 ms	33932 KB	Output is correct
47	Correct	6 ms	33616 KB	Output is correct
48	Correct	13 ms	33920 KB	Output is correct
49	Correct	8 ms	33872 KB	Output is correct
50	Correct	121 ms	33976 KB	Output is correct
51	Correct	10 ms	33872 KB	Output is correct
52	Correct	6 ms	33872 KB	Output is correct
53	Correct	7 ms	33872 KB	Output is correct
54	Correct	10 ms	33872 KB	Output is correct

Subtask #3
0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	31568 KB	Output is correct
2	Correct	14 ms	24656 KB	Output is correct
3	Correct	18 ms	24656 KB	Output is correct
4	Correct	17 ms	23888 KB	Output is correct
5	Correct	23 ms	23888 KB	Output is correct
6	Correct	19 ms	23904 KB	Output is correct
7	Correct	19 ms	23888 KB	Output is correct
8	Correct	18 ms	23904 KB	Output is correct
9	Correct	18 ms	23780 KB	Output is correct
10	Correct	18 ms	23888 KB	Output is correct
11	Correct	7 ms	33616 KB	Output is correct
12	Correct	6 ms	33616 KB	Output is correct
13	Correct	5 ms	33576 KB	Output is correct
14	Correct	7 ms	33616 KB	Output is correct
15	Correct	6 ms	33460 KB	Output is correct
16	Correct	6 ms	33616 KB	Output is correct
17	Correct	6 ms	33616 KB	Output is correct
18	Correct	6 ms	33616 KB	Output is correct
19	Correct	6 ms	33616 KB	Output is correct
20	Correct	7 ms	33616 KB	Output is correct
21	Correct	6 ms	33616 KB	Output is correct
22	Correct	6 ms	33616 KB	Output is correct
23	Correct	6 ms	33576 KB	Output is correct
24	Correct	6 ms	33616 KB	Output is correct
25	Correct	6 ms	33616 KB	Output is correct
26	Correct	66 ms	41452 KB	Output is correct
27	Correct	197 ms	42256 KB	Output is correct
28	Correct	11 ms	33912 KB	Output is correct
29	Correct	6 ms	33616 KB	Output is correct
30	Correct	5 ms	33616 KB	Output is correct
31	Correct	140 ms	41920 KB	Output is correct
32	Correct	7 ms	33616 KB	Output is correct
33	Execution timed out	3066 ms	56044 KB	Time limit exceeded
34	Halted	0 ms	0 KB	-

Subtask #4
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	66 ms	41408 KB	Output is correct
2	Correct	181 ms	45432 KB	Output is correct
3	Correct	15 ms	33816 KB	Output is correct
4	Correct	12 ms	33872 KB	Output is correct
5	Correct	6 ms	33616 KB	Output is correct
6	Correct	6 ms	33616 KB	Output is correct
7	Correct	7 ms	33636 KB	Output is correct
8	Correct	2437 ms	44228 KB	Output is correct
9	Correct	9 ms	33872 KB	Output is correct
10	Correct	200 ms	42024 KB	Output is correct
11	Correct	6 ms	33784 KB	Output is correct
12	Correct	693 ms	41920 KB	Output is correct
13	Correct	1057 ms	44612 KB	Output is correct
14	Correct	747 ms	47172 KB	Output is correct
15	Correct	63 ms	40616 KB	Output is correct
16	Correct	10 ms	33752 KB	Output is correct
17	Correct	7 ms	33616 KB	Output is correct
18	Correct	184 ms	45072 KB	Output is correct
19	Execution timed out	3067 ms	46916 KB	Time limit exceeded
20	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	31568 KB	Output is correct
2	Correct	14 ms	24656 KB	Output is correct
3	Correct	18 ms	24656 KB	Output is correct
4	Correct	17 ms	23888 KB	Output is correct
5	Correct	23 ms	23888 KB	Output is correct
6	Correct	19 ms	23904 KB	Output is correct
7	Correct	19 ms	23888 KB	Output is correct
8	Correct	18 ms	23904 KB	Output is correct
9	Correct	18 ms	23780 KB	Output is correct
10	Correct	18 ms	23888 KB	Output is correct
11	Correct	7 ms	33616 KB	Output is correct
12	Correct	6 ms	33616 KB	Output is correct
13	Correct	5 ms	33576 KB	Output is correct
14	Correct	7 ms	33616 KB	Output is correct
15	Correct	6 ms	33460 KB	Output is correct
16	Correct	6 ms	33616 KB	Output is correct
17	Correct	6 ms	33616 KB	Output is correct
18	Correct	6 ms	33616 KB	Output is correct
19	Correct	6 ms	33616 KB	Output is correct
20	Correct	7 ms	33616 KB	Output is correct
21	Correct	6 ms	33616 KB	Output is correct
22	Correct	6 ms	33616 KB	Output is correct
23	Correct	6 ms	33576 KB	Output is correct
24	Correct	6 ms	33616 KB	Output is correct
25	Correct	6 ms	33616 KB	Output is correct
26	Correct	16 ms	33872 KB	Output is correct
27	Correct	11 ms	33872 KB	Output is correct
28	Correct	299 ms	34116 KB	Output is correct
29	Correct	12 ms	33872 KB	Output is correct
30	Correct	10 ms	33872 KB	Output is correct
31	Correct	6 ms	33784 KB	Output is correct
32	Correct	336 ms	34456 KB	Output is correct
33	Correct	6 ms	33616 KB	Output is correct
34	Correct	7 ms	33616 KB	Output is correct
35	Correct	14 ms	33872 KB	Output is correct
36	Correct	9 ms	33872 KB	Output is correct
37	Correct	19 ms	33952 KB	Output is correct
38	Correct	6 ms	33616 KB	Output is correct
39	Correct	11 ms	34028 KB	Output is correct
40	Correct	7 ms	33872 KB	Output is correct
41	Correct	7 ms	33888 KB	Output is correct
42	Correct	8 ms	33872 KB	Output is correct
43	Correct	23 ms	32296 KB	Output is correct
44	Correct	7 ms	33616 KB	Output is correct
45	Correct	144 ms	33872 KB	Output is correct
46	Correct	23 ms	33932 KB	Output is correct
47	Correct	6 ms	33616 KB	Output is correct
48	Correct	13 ms	33920 KB	Output is correct
49	Correct	8 ms	33872 KB	Output is correct
50	Correct	121 ms	33976 KB	Output is correct
51	Correct	10 ms	33872 KB	Output is correct
52	Correct	6 ms	33872 KB	Output is correct
53	Correct	7 ms	33872 KB	Output is correct
54	Correct	10 ms	33872 KB	Output is correct
55	Correct	6 ms	33616 KB	Output is correct
56	Correct	66 ms	41452 KB	Output is correct
57	Correct	197 ms	42256 KB	Output is correct
58	Correct	11 ms	33912 KB	Output is correct
59	Correct	6 ms	33616 KB	Output is correct
60	Correct	5 ms	33616 KB	Output is correct
61	Correct	140 ms	41920 KB	Output is correct
62	Correct	7 ms	33616 KB	Output is correct
63	Execution timed out	3066 ms	56044 KB	Time limit exceeded
64	Halted	0 ms	0 KB	-

답안 #1114231

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 24.0 / 24.0

Subtask #3 0 / 14.0

Subtask #4 0 / 22.0

Subtask #5 0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
24.0 / 24.0

Subtask #3
0 / 14.0

Subtask #4
0 / 22.0

Subtask #5
0 / 30.0