답안 #1114238

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1114238	2024-11-18T12:09:00 Z	Dan4Life	Mergers (JOI19_mergers)	C++17	34 / 100	3000 ms	52976 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;
int n, k;
int p[N], sz[N];
int a[N], tot[N], cnt[N], deg[N];
vector<int> v[N], adj[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);
		v[u].clear();v[u].shrink_to_fit();
	}
	int ok = 1;
	for(auto u : v[s]) cnt[u]++;
	for(auto u : v[s]){
		ok&=(cnt[u]==tot[u]);
		if(!ok) break;
	}
	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	6 ms	35408 KB	Output is correct
2	Correct	6 ms	35408 KB	Output is correct
3	Correct	6 ms	35408 KB	Output is correct
4	Correct	5 ms	35424 KB	Output is correct
5	Correct	5 ms	35408 KB	Output is correct
6	Correct	6 ms	35408 KB	Output is correct
7	Correct	5 ms	35456 KB	Output is correct
8	Correct	6 ms	35408 KB	Output is correct
9	Correct	5 ms	35408 KB	Output is correct
10	Correct	6 ms	35308 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	6 ms	35408 KB	Output is correct
13	Correct	6 ms	35508 KB	Output is correct
14	Correct	6 ms	35408 KB	Output is correct
15	Correct	6 ms	35408 KB	Output is correct
16	Correct	5 ms	35408 KB	Output is correct
17	Correct	5 ms	35408 KB	Output is correct
18	Correct	5 ms	35408 KB	Output is correct
19	Correct	6 ms	35572 KB	Output is correct
20	Correct	6 ms	35408 KB	Output is correct
21	Correct	5 ms	35408 KB	Output is correct
22	Correct	5 ms	35408 KB	Output is correct
23	Correct	6 ms	35280 KB	Output is correct
24	Correct	6 ms	35408 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	35408 KB	Output is correct
2	Correct	6 ms	35408 KB	Output is correct
3	Correct	6 ms	35408 KB	Output is correct
4	Correct	5 ms	35424 KB	Output is correct
5	Correct	5 ms	35408 KB	Output is correct
6	Correct	6 ms	35408 KB	Output is correct
7	Correct	5 ms	35456 KB	Output is correct
8	Correct	6 ms	35408 KB	Output is correct
9	Correct	5 ms	35408 KB	Output is correct
10	Correct	6 ms	35308 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	6 ms	35408 KB	Output is correct
13	Correct	6 ms	35508 KB	Output is correct
14	Correct	6 ms	35408 KB	Output is correct
15	Correct	6 ms	35408 KB	Output is correct
16	Correct	5 ms	35408 KB	Output is correct
17	Correct	5 ms	35408 KB	Output is correct
18	Correct	5 ms	35408 KB	Output is correct
19	Correct	6 ms	35572 KB	Output is correct
20	Correct	6 ms	35408 KB	Output is correct
21	Correct	5 ms	35408 KB	Output is correct
22	Correct	5 ms	35408 KB	Output is correct
23	Correct	6 ms	35280 KB	Output is correct
24	Correct	6 ms	35408 KB	Output is correct
25	Correct	5 ms	35408 KB	Output is correct
26	Correct	7 ms	35664 KB	Output is correct
27	Correct	8 ms	35664 KB	Output is correct
28	Correct	12 ms	35664 KB	Output is correct
29	Correct	7 ms	35664 KB	Output is correct
30	Correct	7 ms	35664 KB	Output is correct
31	Correct	5 ms	33360 KB	Output is correct
32	Correct	10 ms	35920 KB	Output is correct
33	Correct	6 ms	33408 KB	Output is correct
34	Correct	6 ms	29520 KB	Output is correct
35	Correct	7 ms	35408 KB	Output is correct
36	Correct	8 ms	35664 KB	Output is correct
37	Correct	7 ms	33616 KB	Output is correct
38	Correct	7 ms	35408 KB	Output is correct
39	Correct	7 ms	35664 KB	Output is correct
40	Correct	7 ms	35664 KB	Output is correct
41	Correct	7 ms	35664 KB	Output is correct
42	Correct	6 ms	33556 KB	Output is correct
43	Correct	10 ms	27896 KB	Output is correct
44	Correct	5 ms	27216 KB	Output is correct
45	Correct	10 ms	27472 KB	Output is correct
46	Correct	6 ms	27472 KB	Output is correct
47	Correct	5 ms	27216 KB	Output is correct
48	Correct	6 ms	25424 KB	Output is correct
49	Correct	6 ms	27472 KB	Output is correct
50	Correct	9 ms	35664 KB	Output is correct
51	Correct	7 ms	35664 KB	Output is correct
52	Correct	7 ms	35664 KB	Output is correct
53	Correct	7 ms	35664 KB	Output is correct
54	Correct	7 ms	35664 KB	Output is correct

Subtask #3
0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	35408 KB	Output is correct
2	Correct	6 ms	35408 KB	Output is correct
3	Correct	6 ms	35408 KB	Output is correct
4	Correct	5 ms	35424 KB	Output is correct
5	Correct	5 ms	35408 KB	Output is correct
6	Correct	6 ms	35408 KB	Output is correct
7	Correct	5 ms	35456 KB	Output is correct
8	Correct	6 ms	35408 KB	Output is correct
9	Correct	5 ms	35408 KB	Output is correct
10	Correct	6 ms	35308 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	6 ms	35408 KB	Output is correct
13	Correct	6 ms	35508 KB	Output is correct
14	Correct	6 ms	35408 KB	Output is correct
15	Correct	6 ms	35408 KB	Output is correct
16	Correct	5 ms	35408 KB	Output is correct
17	Correct	5 ms	35408 KB	Output is correct
18	Correct	5 ms	35408 KB	Output is correct
19	Correct	6 ms	35572 KB	Output is correct
20	Correct	6 ms	35408 KB	Output is correct
21	Correct	5 ms	35408 KB	Output is correct
22	Correct	5 ms	35408 KB	Output is correct
23	Correct	6 ms	35280 KB	Output is correct
24	Correct	6 ms	35408 KB	Output is correct
25	Correct	6 ms	35408 KB	Output is correct
26	Correct	37 ms	39636 KB	Output is correct
27	Correct	51 ms	39584 KB	Output is correct
28	Correct	9 ms	35676 KB	Output is correct
29	Correct	6 ms	35408 KB	Output is correct
30	Correct	7 ms	35408 KB	Output is correct
31	Correct	59 ms	39624 KB	Output is correct
32	Correct	7 ms	35664 KB	Output is correct
33	Execution timed out	3100 ms	52976 KB	Time limit exceeded
34	Halted	0 ms	0 KB	-

Subtask #4
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	36 ms	39772 KB	Output is correct
2	Correct	40 ms	39820 KB	Output is correct
3	Correct	7 ms	35664 KB	Output is correct
4	Correct	8 ms	35624 KB	Output is correct
5	Correct	6 ms	35408 KB	Output is correct
6	Correct	6 ms	35408 KB	Output is correct
7	Correct	6 ms	35664 KB	Output is correct
8	Correct	77 ms	39352 KB	Output is correct
9	Correct	8 ms	35832 KB	Output is correct
10	Correct	78 ms	39544 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	157 ms	39424 KB	Output is correct
13	Correct	58 ms	39328 KB	Output is correct
14	Correct	54 ms	39528 KB	Output is correct
15	Correct	36 ms	39744 KB	Output is correct
16	Correct	7 ms	35664 KB	Output is correct
17	Correct	6 ms	35408 KB	Output is correct
18	Correct	40 ms	39744 KB	Output is correct
19	Execution timed out	3078 ms	46152 KB	Time limit exceeded
20	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	35408 KB	Output is correct
2	Correct	6 ms	35408 KB	Output is correct
3	Correct	6 ms	35408 KB	Output is correct
4	Correct	5 ms	35424 KB	Output is correct
5	Correct	5 ms	35408 KB	Output is correct
6	Correct	6 ms	35408 KB	Output is correct
7	Correct	5 ms	35456 KB	Output is correct
8	Correct	6 ms	35408 KB	Output is correct
9	Correct	5 ms	35408 KB	Output is correct
10	Correct	6 ms	35308 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	6 ms	35408 KB	Output is correct
13	Correct	6 ms	35508 KB	Output is correct
14	Correct	6 ms	35408 KB	Output is correct
15	Correct	6 ms	35408 KB	Output is correct
16	Correct	5 ms	35408 KB	Output is correct
17	Correct	5 ms	35408 KB	Output is correct
18	Correct	5 ms	35408 KB	Output is correct
19	Correct	6 ms	35572 KB	Output is correct
20	Correct	6 ms	35408 KB	Output is correct
21	Correct	5 ms	35408 KB	Output is correct
22	Correct	5 ms	35408 KB	Output is correct
23	Correct	6 ms	35280 KB	Output is correct
24	Correct	6 ms	35408 KB	Output is correct
25	Correct	5 ms	35408 KB	Output is correct
26	Correct	7 ms	35664 KB	Output is correct
27	Correct	8 ms	35664 KB	Output is correct
28	Correct	12 ms	35664 KB	Output is correct
29	Correct	7 ms	35664 KB	Output is correct
30	Correct	7 ms	35664 KB	Output is correct
31	Correct	5 ms	33360 KB	Output is correct
32	Correct	10 ms	35920 KB	Output is correct
33	Correct	6 ms	33408 KB	Output is correct
34	Correct	6 ms	29520 KB	Output is correct
35	Correct	7 ms	35408 KB	Output is correct
36	Correct	8 ms	35664 KB	Output is correct
37	Correct	7 ms	33616 KB	Output is correct
38	Correct	7 ms	35408 KB	Output is correct
39	Correct	7 ms	35664 KB	Output is correct
40	Correct	7 ms	35664 KB	Output is correct
41	Correct	7 ms	35664 KB	Output is correct
42	Correct	6 ms	33556 KB	Output is correct
43	Correct	10 ms	27896 KB	Output is correct
44	Correct	5 ms	27216 KB	Output is correct
45	Correct	10 ms	27472 KB	Output is correct
46	Correct	6 ms	27472 KB	Output is correct
47	Correct	5 ms	27216 KB	Output is correct
48	Correct	6 ms	25424 KB	Output is correct
49	Correct	6 ms	27472 KB	Output is correct
50	Correct	9 ms	35664 KB	Output is correct
51	Correct	7 ms	35664 KB	Output is correct
52	Correct	7 ms	35664 KB	Output is correct
53	Correct	7 ms	35664 KB	Output is correct
54	Correct	7 ms	35664 KB	Output is correct
55	Correct	6 ms	35408 KB	Output is correct
56	Correct	37 ms	39636 KB	Output is correct
57	Correct	51 ms	39584 KB	Output is correct
58	Correct	9 ms	35676 KB	Output is correct
59	Correct	6 ms	35408 KB	Output is correct
60	Correct	7 ms	35408 KB	Output is correct
61	Correct	59 ms	39624 KB	Output is correct
62	Correct	7 ms	35664 KB	Output is correct
63	Execution timed out	3100 ms	52976 KB	Time limit exceeded
64	Halted	0 ms	0 KB	-

답안 #1114238

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