답안 #1114236

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1114236	2024-11-18T12:06:47 Z	Dan4Life	Mergers (JOI19_mergers)	C++17	34 / 100	3000 ms	52608 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);
	}
	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	35576 KB	Output is correct
4	Correct	6 ms	35524 KB	Output is correct
5	Correct	6 ms	35408 KB	Output is correct
6	Correct	7 ms	35460 KB	Output is correct
7	Correct	6 ms	35408 KB	Output is correct
8	Correct	6 ms	35408 KB	Output is correct
9	Correct	6 ms	35504 KB	Output is correct
10	Correct	6 ms	35408 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	6 ms	35580 KB	Output is correct
13	Correct	6 ms	35576 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	33360 KB	Output is correct
17	Correct	5 ms	35408 KB	Output is correct
18	Correct	6 ms	35408 KB	Output is correct
19	Correct	6 ms	35408 KB	Output is correct
20	Correct	8 ms	35408 KB	Output is correct
21	Correct	6 ms	35408 KB	Output is correct
22	Correct	6 ms	35408 KB	Output is correct
23	Correct	6 ms	35408 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	35576 KB	Output is correct
4	Correct	6 ms	35524 KB	Output is correct
5	Correct	6 ms	35408 KB	Output is correct
6	Correct	7 ms	35460 KB	Output is correct
7	Correct	6 ms	35408 KB	Output is correct
8	Correct	6 ms	35408 KB	Output is correct
9	Correct	6 ms	35504 KB	Output is correct
10	Correct	6 ms	35408 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	6 ms	35580 KB	Output is correct
13	Correct	6 ms	35576 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	33360 KB	Output is correct
17	Correct	5 ms	35408 KB	Output is correct
18	Correct	6 ms	35408 KB	Output is correct
19	Correct	6 ms	35408 KB	Output is correct
20	Correct	8 ms	35408 KB	Output is correct
21	Correct	6 ms	35408 KB	Output is correct
22	Correct	6 ms	35408 KB	Output is correct
23	Correct	6 ms	35408 KB	Output is correct
24	Correct	6 ms	35408 KB	Output is correct
25	Correct	6 ms	35408 KB	Output is correct
26	Correct	8 ms	35664 KB	Output is correct
27	Correct	9 ms	35784 KB	Output is correct
28	Correct	10 ms	35892 KB	Output is correct
29	Correct	8 ms	35768 KB	Output is correct
30	Correct	7 ms	35664 KB	Output is correct
31	Correct	6 ms	35408 KB	Output is correct
32	Correct	12 ms	35920 KB	Output is correct
33	Correct	6 ms	35408 KB	Output is correct
34	Correct	6 ms	35916 KB	Output is correct
35	Correct	7 ms	35664 KB	Output is correct
36	Correct	7 ms	35664 KB	Output is correct
37	Correct	7 ms	35620 KB	Output is correct
38	Correct	6 ms	35408 KB	Output is correct
39	Correct	8 ms	35664 KB	Output is correct
40	Correct	7 ms	35664 KB	Output is correct
41	Correct	8 ms	35664 KB	Output is correct
42	Correct	7 ms	35664 KB	Output is correct
43	Correct	13 ms	35920 KB	Output is correct
44	Correct	6 ms	35408 KB	Output is correct
45	Correct	9 ms	35652 KB	Output is correct
46	Correct	8 ms	35832 KB	Output is correct
47	Correct	6 ms	35468 KB	Output is correct
48	Correct	7 ms	35664 KB	Output is correct
49	Correct	6 ms	35664 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	8 ms	35512 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	35576 KB	Output is correct
4	Correct	6 ms	35524 KB	Output is correct
5	Correct	6 ms	35408 KB	Output is correct
6	Correct	7 ms	35460 KB	Output is correct
7	Correct	6 ms	35408 KB	Output is correct
8	Correct	6 ms	35408 KB	Output is correct
9	Correct	6 ms	35504 KB	Output is correct
10	Correct	6 ms	35408 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	6 ms	35580 KB	Output is correct
13	Correct	6 ms	35576 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	33360 KB	Output is correct
17	Correct	5 ms	35408 KB	Output is correct
18	Correct	6 ms	35408 KB	Output is correct
19	Correct	6 ms	35408 KB	Output is correct
20	Correct	8 ms	35408 KB	Output is correct
21	Correct	6 ms	35408 KB	Output is correct
22	Correct	6 ms	35408 KB	Output is correct
23	Correct	6 ms	35408 KB	Output is correct
24	Correct	6 ms	35408 KB	Output is correct
25	Correct	6 ms	35576 KB	Output is correct
26	Correct	43 ms	42604 KB	Output is correct
27	Correct	72 ms	43972 KB	Output is correct
28	Correct	8 ms	35664 KB	Output is correct
29	Correct	6 ms	35524 KB	Output is correct
30	Correct	6 ms	35524 KB	Output is correct
31	Correct	69 ms	43832 KB	Output is correct
32	Correct	7 ms	35664 KB	Output is correct
33	Execution timed out	3098 ms	52608 KB	Time limit exceeded
34	Halted	0 ms	0 KB	-

Subtask #4
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	43 ms	42432 KB	Output is correct
2	Correct	45 ms	42432 KB	Output is correct
3	Correct	8 ms	35664 KB	Output is correct
4	Correct	8 ms	33676 KB	Output is correct
5	Correct	6 ms	33360 KB	Output is correct
6	Correct	6 ms	31480 KB	Output is correct
7	Correct	6 ms	31568 KB	Output is correct
8	Correct	115 ms	41920 KB	Output is correct
9	Correct	7 ms	29688 KB	Output is correct
10	Correct	85 ms	39612 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	180 ms	43636 KB	Output is correct
13	Correct	85 ms	43976 KB	Output is correct
14	Correct	66 ms	43972 KB	Output is correct
15	Correct	60 ms	42564 KB	Output is correct
16	Correct	7 ms	35832 KB	Output is correct
17	Correct	6 ms	35408 KB	Output is correct
18	Correct	54 ms	42512 KB	Output is correct
19	Execution timed out	3068 ms	45756 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	35576 KB	Output is correct
4	Correct	6 ms	35524 KB	Output is correct
5	Correct	6 ms	35408 KB	Output is correct
6	Correct	7 ms	35460 KB	Output is correct
7	Correct	6 ms	35408 KB	Output is correct
8	Correct	6 ms	35408 KB	Output is correct
9	Correct	6 ms	35504 KB	Output is correct
10	Correct	6 ms	35408 KB	Output is correct
11	Correct	6 ms	35408 KB	Output is correct
12	Correct	6 ms	35580 KB	Output is correct
13	Correct	6 ms	35576 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	33360 KB	Output is correct
17	Correct	5 ms	35408 KB	Output is correct
18	Correct	6 ms	35408 KB	Output is correct
19	Correct	6 ms	35408 KB	Output is correct
20	Correct	8 ms	35408 KB	Output is correct
21	Correct	6 ms	35408 KB	Output is correct
22	Correct	6 ms	35408 KB	Output is correct
23	Correct	6 ms	35408 KB	Output is correct
24	Correct	6 ms	35408 KB	Output is correct
25	Correct	6 ms	35408 KB	Output is correct
26	Correct	8 ms	35664 KB	Output is correct
27	Correct	9 ms	35784 KB	Output is correct
28	Correct	10 ms	35892 KB	Output is correct
29	Correct	8 ms	35768 KB	Output is correct
30	Correct	7 ms	35664 KB	Output is correct
31	Correct	6 ms	35408 KB	Output is correct
32	Correct	12 ms	35920 KB	Output is correct
33	Correct	6 ms	35408 KB	Output is correct
34	Correct	6 ms	35916 KB	Output is correct
35	Correct	7 ms	35664 KB	Output is correct
36	Correct	7 ms	35664 KB	Output is correct
37	Correct	7 ms	35620 KB	Output is correct
38	Correct	6 ms	35408 KB	Output is correct
39	Correct	8 ms	35664 KB	Output is correct
40	Correct	7 ms	35664 KB	Output is correct
41	Correct	8 ms	35664 KB	Output is correct
42	Correct	7 ms	35664 KB	Output is correct
43	Correct	13 ms	35920 KB	Output is correct
44	Correct	6 ms	35408 KB	Output is correct
45	Correct	9 ms	35652 KB	Output is correct
46	Correct	8 ms	35832 KB	Output is correct
47	Correct	6 ms	35468 KB	Output is correct
48	Correct	7 ms	35664 KB	Output is correct
49	Correct	6 ms	35664 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	8 ms	35512 KB	Output is correct
54	Correct	7 ms	35664 KB	Output is correct
55	Correct	6 ms	35576 KB	Output is correct
56	Correct	43 ms	42604 KB	Output is correct
57	Correct	72 ms	43972 KB	Output is correct
58	Correct	8 ms	35664 KB	Output is correct
59	Correct	6 ms	35524 KB	Output is correct
60	Correct	6 ms	35524 KB	Output is correct
61	Correct	69 ms	43832 KB	Output is correct
62	Correct	7 ms	35664 KB	Output is correct
63	Execution timed out	3098 ms	52608 KB	Time limit exceeded
64	Halted	0 ms	0 KB	-

답안 #1114236

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