답안 #1114230

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1114230	2024-11-18T11:58:49 Z	Dan4Life	Mergers (JOI19_mergers)	C++17	34 / 100	3000 ms	36892 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)2e5+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	4 ms	14416 KB	Output is correct
2	Correct	4 ms	14416 KB	Output is correct
3	Correct	5 ms	14416 KB	Output is correct
4	Correct	4 ms	14584 KB	Output is correct
5	Correct	4 ms	14416 KB	Output is correct
6	Correct	4 ms	14416 KB	Output is correct
7	Correct	4 ms	14416 KB	Output is correct
8	Correct	4 ms	14416 KB	Output is correct
9	Correct	4 ms	14416 KB	Output is correct
10	Correct	3 ms	14512 KB	Output is correct
11	Correct	4 ms	14416 KB	Output is correct
12	Correct	4 ms	14416 KB	Output is correct
13	Correct	4 ms	14416 KB	Output is correct
14	Correct	4 ms	14416 KB	Output is correct
15	Correct	4 ms	14416 KB	Output is correct
16	Correct	4 ms	14416 KB	Output is correct
17	Correct	4 ms	14416 KB	Output is correct
18	Correct	4 ms	14416 KB	Output is correct
19	Correct	4 ms	14584 KB	Output is correct
20	Correct	3 ms	14416 KB	Output is correct
21	Correct	4 ms	14416 KB	Output is correct
22	Correct	4 ms	14416 KB	Output is correct
23	Correct	4 ms	14416 KB	Output is correct
24	Correct	4 ms	14416 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	14416 KB	Output is correct
2	Correct	4 ms	14416 KB	Output is correct
3	Correct	5 ms	14416 KB	Output is correct
4	Correct	4 ms	14584 KB	Output is correct
5	Correct	4 ms	14416 KB	Output is correct
6	Correct	4 ms	14416 KB	Output is correct
7	Correct	4 ms	14416 KB	Output is correct
8	Correct	4 ms	14416 KB	Output is correct
9	Correct	4 ms	14416 KB	Output is correct
10	Correct	3 ms	14512 KB	Output is correct
11	Correct	4 ms	14416 KB	Output is correct
12	Correct	4 ms	14416 KB	Output is correct
13	Correct	4 ms	14416 KB	Output is correct
14	Correct	4 ms	14416 KB	Output is correct
15	Correct	4 ms	14416 KB	Output is correct
16	Correct	4 ms	14416 KB	Output is correct
17	Correct	4 ms	14416 KB	Output is correct
18	Correct	4 ms	14416 KB	Output is correct
19	Correct	4 ms	14584 KB	Output is correct
20	Correct	3 ms	14416 KB	Output is correct
21	Correct	4 ms	14416 KB	Output is correct
22	Correct	4 ms	14416 KB	Output is correct
23	Correct	4 ms	14416 KB	Output is correct
24	Correct	4 ms	14416 KB	Output is correct
25	Correct	4 ms	14432 KB	Output is correct
26	Correct	12 ms	14800 KB	Output is correct
27	Correct	8 ms	14672 KB	Output is correct
28	Correct	294 ms	14928 KB	Output is correct
29	Correct	10 ms	14928 KB	Output is correct
30	Correct	8 ms	14840 KB	Output is correct
31	Correct	4 ms	14416 KB	Output is correct
32	Correct	360 ms	15176 KB	Output is correct
33	Correct	4 ms	14416 KB	Output is correct
34	Correct	5 ms	14672 KB	Output is correct
35	Correct	12 ms	14784 KB	Output is correct
36	Correct	7 ms	14684 KB	Output is correct
37	Correct	16 ms	14672 KB	Output is correct
38	Correct	4 ms	14416 KB	Output is correct
39	Correct	11 ms	14868 KB	Output is correct
40	Correct	6 ms	14672 KB	Output is correct
41	Correct	5 ms	14672 KB	Output is correct
42	Correct	6 ms	14840 KB	Output is correct
43	Correct	20 ms	15276 KB	Output is correct
44	Correct	4 ms	14416 KB	Output is correct
45	Correct	141 ms	14924 KB	Output is correct
46	Correct	25 ms	14672 KB	Output is correct
47	Correct	4 ms	14416 KB	Output is correct
48	Correct	11 ms	14672 KB	Output is correct
49	Correct	6 ms	14672 KB	Output is correct
50	Correct	118 ms	14888 KB	Output is correct
51	Correct	9 ms	14672 KB	Output is correct
52	Correct	5 ms	14672 KB	Output is correct
53	Correct	5 ms	14672 KB	Output is correct
54	Correct	7 ms	14552 KB	Output is correct

Subtask #3
0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	14416 KB	Output is correct
2	Correct	4 ms	14416 KB	Output is correct
3	Correct	5 ms	14416 KB	Output is correct
4	Correct	4 ms	14584 KB	Output is correct
5	Correct	4 ms	14416 KB	Output is correct
6	Correct	4 ms	14416 KB	Output is correct
7	Correct	4 ms	14416 KB	Output is correct
8	Correct	4 ms	14416 KB	Output is correct
9	Correct	4 ms	14416 KB	Output is correct
10	Correct	3 ms	14512 KB	Output is correct
11	Correct	4 ms	14416 KB	Output is correct
12	Correct	4 ms	14416 KB	Output is correct
13	Correct	4 ms	14416 KB	Output is correct
14	Correct	4 ms	14416 KB	Output is correct
15	Correct	4 ms	14416 KB	Output is correct
16	Correct	4 ms	14416 KB	Output is correct
17	Correct	4 ms	14416 KB	Output is correct
18	Correct	4 ms	14416 KB	Output is correct
19	Correct	4 ms	14584 KB	Output is correct
20	Correct	3 ms	14416 KB	Output is correct
21	Correct	4 ms	14416 KB	Output is correct
22	Correct	4 ms	14416 KB	Output is correct
23	Correct	4 ms	14416 KB	Output is correct
24	Correct	4 ms	14416 KB	Output is correct
25	Correct	4 ms	14584 KB	Output is correct
26	Correct	50 ms	21412 KB	Output is correct
27	Correct	168 ms	22980 KB	Output is correct
28	Correct	8 ms	14672 KB	Output is correct
29	Correct	3 ms	14416 KB	Output is correct
30	Correct	3 ms	14416 KB	Output is correct
31	Correct	104 ms	22948 KB	Output is correct
32	Correct	4 ms	14672 KB	Output is correct
33	Execution timed out	3102 ms	36892 KB	Time limit exceeded
34	Halted	0 ms	0 KB	-

Subtask #4
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	60 ms	21448 KB	Output is correct
2	Correct	132 ms	26048 KB	Output is correct
3	Correct	13 ms	14672 KB	Output is correct
4	Correct	8 ms	14672 KB	Output is correct
5	Correct	4 ms	14416 KB	Output is correct
6	Correct	4 ms	14416 KB	Output is correct
7	Correct	5 ms	14672 KB	Output is correct
8	Correct	2536 ms	25284 KB	Output is correct
9	Correct	6 ms	14672 KB	Output is correct
10	Correct	202 ms	22976 KB	Output is correct
11	Correct	4 ms	14416 KB	Output is correct
12	Correct	726 ms	22720 KB	Output is correct
13	Correct	1026 ms	25372 KB	Output is correct
14	Correct	752 ms	27972 KB	Output is correct
15	Correct	59 ms	21564 KB	Output is correct
16	Correct	6 ms	14672 KB	Output is correct
17	Correct	4 ms	14516 KB	Output is correct
18	Correct	163 ms	25996 KB	Output is correct
19	Execution timed out	3062 ms	27720 KB	Time limit exceeded
20	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	14416 KB	Output is correct
2	Correct	4 ms	14416 KB	Output is correct
3	Correct	5 ms	14416 KB	Output is correct
4	Correct	4 ms	14584 KB	Output is correct
5	Correct	4 ms	14416 KB	Output is correct
6	Correct	4 ms	14416 KB	Output is correct
7	Correct	4 ms	14416 KB	Output is correct
8	Correct	4 ms	14416 KB	Output is correct
9	Correct	4 ms	14416 KB	Output is correct
10	Correct	3 ms	14512 KB	Output is correct
11	Correct	4 ms	14416 KB	Output is correct
12	Correct	4 ms	14416 KB	Output is correct
13	Correct	4 ms	14416 KB	Output is correct
14	Correct	4 ms	14416 KB	Output is correct
15	Correct	4 ms	14416 KB	Output is correct
16	Correct	4 ms	14416 KB	Output is correct
17	Correct	4 ms	14416 KB	Output is correct
18	Correct	4 ms	14416 KB	Output is correct
19	Correct	4 ms	14584 KB	Output is correct
20	Correct	3 ms	14416 KB	Output is correct
21	Correct	4 ms	14416 KB	Output is correct
22	Correct	4 ms	14416 KB	Output is correct
23	Correct	4 ms	14416 KB	Output is correct
24	Correct	4 ms	14416 KB	Output is correct
25	Correct	4 ms	14432 KB	Output is correct
26	Correct	12 ms	14800 KB	Output is correct
27	Correct	8 ms	14672 KB	Output is correct
28	Correct	294 ms	14928 KB	Output is correct
29	Correct	10 ms	14928 KB	Output is correct
30	Correct	8 ms	14840 KB	Output is correct
31	Correct	4 ms	14416 KB	Output is correct
32	Correct	360 ms	15176 KB	Output is correct
33	Correct	4 ms	14416 KB	Output is correct
34	Correct	5 ms	14672 KB	Output is correct
35	Correct	12 ms	14784 KB	Output is correct
36	Correct	7 ms	14684 KB	Output is correct
37	Correct	16 ms	14672 KB	Output is correct
38	Correct	4 ms	14416 KB	Output is correct
39	Correct	11 ms	14868 KB	Output is correct
40	Correct	6 ms	14672 KB	Output is correct
41	Correct	5 ms	14672 KB	Output is correct
42	Correct	6 ms	14840 KB	Output is correct
43	Correct	20 ms	15276 KB	Output is correct
44	Correct	4 ms	14416 KB	Output is correct
45	Correct	141 ms	14924 KB	Output is correct
46	Correct	25 ms	14672 KB	Output is correct
47	Correct	4 ms	14416 KB	Output is correct
48	Correct	11 ms	14672 KB	Output is correct
49	Correct	6 ms	14672 KB	Output is correct
50	Correct	118 ms	14888 KB	Output is correct
51	Correct	9 ms	14672 KB	Output is correct
52	Correct	5 ms	14672 KB	Output is correct
53	Correct	5 ms	14672 KB	Output is correct
54	Correct	7 ms	14552 KB	Output is correct
55	Correct	4 ms	14584 KB	Output is correct
56	Correct	50 ms	21412 KB	Output is correct
57	Correct	168 ms	22980 KB	Output is correct
58	Correct	8 ms	14672 KB	Output is correct
59	Correct	3 ms	14416 KB	Output is correct
60	Correct	3 ms	14416 KB	Output is correct
61	Correct	104 ms	22948 KB	Output is correct
62	Correct	4 ms	14672 KB	Output is correct
63	Execution timed out	3102 ms	36892 KB	Time limit exceeded
64	Halted	0 ms	0 KB	-

답안 #1114230

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