답안 #1114234

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1114234	2024-11-18T12:01:07 Z	Dan4Life	Mergers (JOI19_mergers)	C++17	34 / 100	3000 ms	54600 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; 
	unordered_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	6 ms	33616 KB	Output is correct
2	Correct	6 ms	33616 KB	Output is correct
3	Correct	6 ms	33788 KB	Output is correct
4	Correct	6 ms	33616 KB	Output is correct
5	Correct	6 ms	33616 KB	Output is correct
6	Correct	6 ms	33616 KB	Output is correct
7	Correct	5 ms	33616 KB	Output is correct
8	Correct	6 ms	33616 KB	Output is correct
9	Correct	6 ms	33616 KB	Output is correct
10	Correct	5 ms	27472 KB	Output is correct
11	Correct	5 ms	27472 KB	Output is correct
12	Correct	5 ms	25424 KB	Output is correct
13	Correct	5 ms	31568 KB	Output is correct
14	Correct	6 ms	33616 KB	Output is correct
15	Correct	6 ms	33616 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	7 ms	33616 KB	Output is correct
20	Correct	6 ms	33616 KB	Output is correct
21	Correct	5 ms	33616 KB	Output is correct
22	Correct	5 ms	33616 KB	Output is correct
23	Correct	6 ms	33616 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	6 ms	33616 KB	Output is correct
2	Correct	6 ms	33616 KB	Output is correct
3	Correct	6 ms	33788 KB	Output is correct
4	Correct	6 ms	33616 KB	Output is correct
5	Correct	6 ms	33616 KB	Output is correct
6	Correct	6 ms	33616 KB	Output is correct
7	Correct	5 ms	33616 KB	Output is correct
8	Correct	6 ms	33616 KB	Output is correct
9	Correct	6 ms	33616 KB	Output is correct
10	Correct	5 ms	27472 KB	Output is correct
11	Correct	5 ms	27472 KB	Output is correct
12	Correct	5 ms	25424 KB	Output is correct
13	Correct	5 ms	31568 KB	Output is correct
14	Correct	6 ms	33616 KB	Output is correct
15	Correct	6 ms	33616 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	7 ms	33616 KB	Output is correct
20	Correct	6 ms	33616 KB	Output is correct
21	Correct	5 ms	33616 KB	Output is correct
22	Correct	5 ms	33616 KB	Output is correct
23	Correct	6 ms	33616 KB	Output is correct
24	Correct	6 ms	33616 KB	Output is correct
25	Correct	8 ms	33616 KB	Output is correct
26	Correct	11 ms	33884 KB	Output is correct
27	Correct	11 ms	33872 KB	Output is correct
28	Correct	136 ms	34112 KB	Output is correct
29	Correct	13 ms	33872 KB	Output is correct
30	Correct	12 ms	33872 KB	Output is correct
31	Correct	6 ms	33616 KB	Output is correct
32	Correct	168 ms	34188 KB	Output is correct
33	Correct	6 ms	33616 KB	Output is correct
34	Correct	7 ms	33760 KB	Output is correct
35	Correct	10 ms	33856 KB	Output is correct
36	Correct	10 ms	33888 KB	Output is correct
37	Correct	11 ms	33872 KB	Output is correct
38	Correct	6 ms	33476 KB	Output is correct
39	Correct	10 ms	33872 KB	Output is correct
40	Correct	8 ms	29776 KB	Output is correct
41	Correct	9 ms	33872 KB	Output is correct
42	Correct	6 ms	29776 KB	Output is correct
43	Correct	44 ms	34128 KB	Output is correct
44	Correct	6 ms	33788 KB	Output is correct
45	Correct	69 ms	33872 KB	Output is correct
46	Correct	15 ms	33872 KB	Output is correct
47	Correct	6 ms	33784 KB	Output is correct
48	Correct	10 ms	33872 KB	Output is correct
49	Correct	8 ms	33872 KB	Output is correct
50	Correct	82 ms	33972 KB	Output is correct
51	Correct	10 ms	33996 KB	Output is correct
52	Correct	6 ms	33872 KB	Output is correct
53	Correct	7 ms	33872 KB	Output is correct
54	Correct	9 ms	33872 KB	Output is correct

Subtask #3
0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	33616 KB	Output is correct
2	Correct	6 ms	33616 KB	Output is correct
3	Correct	6 ms	33788 KB	Output is correct
4	Correct	6 ms	33616 KB	Output is correct
5	Correct	6 ms	33616 KB	Output is correct
6	Correct	6 ms	33616 KB	Output is correct
7	Correct	5 ms	33616 KB	Output is correct
8	Correct	6 ms	33616 KB	Output is correct
9	Correct	6 ms	33616 KB	Output is correct
10	Correct	5 ms	27472 KB	Output is correct
11	Correct	5 ms	27472 KB	Output is correct
12	Correct	5 ms	25424 KB	Output is correct
13	Correct	5 ms	31568 KB	Output is correct
14	Correct	6 ms	33616 KB	Output is correct
15	Correct	6 ms	33616 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	7 ms	33616 KB	Output is correct
20	Correct	6 ms	33616 KB	Output is correct
21	Correct	5 ms	33616 KB	Output is correct
22	Correct	5 ms	33616 KB	Output is correct
23	Correct	6 ms	33616 KB	Output is correct
24	Correct	6 ms	33616 KB	Output is correct
25	Correct	6 ms	33616 KB	Output is correct
26	Correct	53 ms	40544 KB	Output is correct
27	Correct	97 ms	41964 KB	Output is correct
28	Correct	12 ms	33908 KB	Output is correct
29	Correct	6 ms	33616 KB	Output is correct
30	Correct	6 ms	33616 KB	Output is correct
31	Correct	146 ms	42080 KB	Output is correct
32	Correct	8 ms	33784 KB	Output is correct
33	Execution timed out	3066 ms	54600 KB	Time limit exceeded
34	Halted	0 ms	0 KB	-

Subtask #4
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	64 ms	40644 KB	Output is correct
2	Correct	69 ms	45200 KB	Output is correct
3	Correct	10 ms	33872 KB	Output is correct
4	Correct	10 ms	33872 KB	Output is correct
5	Correct	5 ms	33616 KB	Output is correct
6	Correct	6 ms	33616 KB	Output is correct
7	Correct	7 ms	33616 KB	Output is correct
8	Correct	621 ms	44500 KB	Output is correct
9	Correct	8 ms	33872 KB	Output is correct
10	Correct	142 ms	41920 KB	Output is correct
11	Correct	5 ms	33616 KB	Output is correct
12	Correct	466 ms	41996 KB	Output is correct
13	Correct	336 ms	44984 KB	Output is correct
14	Correct	259 ms	48052 KB	Output is correct
15	Correct	55 ms	40764 KB	Output is correct
16	Correct	9 ms	34040 KB	Output is correct
17	Correct	6 ms	33572 KB	Output is correct
18	Correct	98 ms	45448 KB	Output is correct
19	Execution timed out	3048 ms	46296 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	33616 KB	Output is correct
2	Correct	6 ms	33616 KB	Output is correct
3	Correct	6 ms	33788 KB	Output is correct
4	Correct	6 ms	33616 KB	Output is correct
5	Correct	6 ms	33616 KB	Output is correct
6	Correct	6 ms	33616 KB	Output is correct
7	Correct	5 ms	33616 KB	Output is correct
8	Correct	6 ms	33616 KB	Output is correct
9	Correct	6 ms	33616 KB	Output is correct
10	Correct	5 ms	27472 KB	Output is correct
11	Correct	5 ms	27472 KB	Output is correct
12	Correct	5 ms	25424 KB	Output is correct
13	Correct	5 ms	31568 KB	Output is correct
14	Correct	6 ms	33616 KB	Output is correct
15	Correct	6 ms	33616 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	7 ms	33616 KB	Output is correct
20	Correct	6 ms	33616 KB	Output is correct
21	Correct	5 ms	33616 KB	Output is correct
22	Correct	5 ms	33616 KB	Output is correct
23	Correct	6 ms	33616 KB	Output is correct
24	Correct	6 ms	33616 KB	Output is correct
25	Correct	8 ms	33616 KB	Output is correct
26	Correct	11 ms	33884 KB	Output is correct
27	Correct	11 ms	33872 KB	Output is correct
28	Correct	136 ms	34112 KB	Output is correct
29	Correct	13 ms	33872 KB	Output is correct
30	Correct	12 ms	33872 KB	Output is correct
31	Correct	6 ms	33616 KB	Output is correct
32	Correct	168 ms	34188 KB	Output is correct
33	Correct	6 ms	33616 KB	Output is correct
34	Correct	7 ms	33760 KB	Output is correct
35	Correct	10 ms	33856 KB	Output is correct
36	Correct	10 ms	33888 KB	Output is correct
37	Correct	11 ms	33872 KB	Output is correct
38	Correct	6 ms	33476 KB	Output is correct
39	Correct	10 ms	33872 KB	Output is correct
40	Correct	8 ms	29776 KB	Output is correct
41	Correct	9 ms	33872 KB	Output is correct
42	Correct	6 ms	29776 KB	Output is correct
43	Correct	44 ms	34128 KB	Output is correct
44	Correct	6 ms	33788 KB	Output is correct
45	Correct	69 ms	33872 KB	Output is correct
46	Correct	15 ms	33872 KB	Output is correct
47	Correct	6 ms	33784 KB	Output is correct
48	Correct	10 ms	33872 KB	Output is correct
49	Correct	8 ms	33872 KB	Output is correct
50	Correct	82 ms	33972 KB	Output is correct
51	Correct	10 ms	33996 KB	Output is correct
52	Correct	6 ms	33872 KB	Output is correct
53	Correct	7 ms	33872 KB	Output is correct
54	Correct	9 ms	33872 KB	Output is correct
55	Correct	6 ms	33616 KB	Output is correct
56	Correct	53 ms	40544 KB	Output is correct
57	Correct	97 ms	41964 KB	Output is correct
58	Correct	12 ms	33908 KB	Output is correct
59	Correct	6 ms	33616 KB	Output is correct
60	Correct	6 ms	33616 KB	Output is correct
61	Correct	146 ms	42080 KB	Output is correct
62	Correct	8 ms	33784 KB	Output is correct
63	Execution timed out	3066 ms	54600 KB	Time limit exceeded
64	Halted	0 ms	0 KB	-

답안 #1114234

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