답안 #924699

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
924699	2024-02-09T13:49:22 Z	NintsiChkhaidze	수도 (JOI20_capital_city)	C++17	100 / 100	440 ms	43192 KB

capital_city

#include <bits/stdc++.h>
#define ll long long
#define s second
#define f first
#define pb push_back
#define pii pair <int,int>
#define left (h<<1),l,(l + r)/2
#define right ((h<<1)|1),(l + r)/2 + 1,r
// #define int ll
using namespace std;

const int N = 2e5 + 3;

int color[N],vis[N],centroid,f[N];
int tot[N],cnt[N],ans,parent[N];
vector <int> v[N],vec[N];

int dfs(int x,int par,int n,int dl){

	// cout<<x<<" & "<<color[x]<<endl;
	cnt[color[x]] += dl;
	int s = 1;
	for (int to: v[x]){
		if (to == par || vis[to]) continue;
		s += dfs(to,x,n,dl);
	}

	if (centroid == -1 && (par == -1 || s*2 >= n)) 
		centroid = x;
	
	return s;
}
void DFS(int x,int par){
	parent[x] = par;
	for (int to: v[x]){
		if(to==par || vis[to]) continue;
		DFS(to,x);
	}
}
void go(int x,int n,int dep){
	centroid = -1;
	dfs(x,-1,n,1);
	DFS(centroid,-1);

	queue <int> q;
	vector <int> rl;
	q.push(color[centroid]);
	rl.pb(color[centroid]);
	f[color[centroid]] = 1;

	int check = 1,add = 0;
	while (q.size()){
		int c = q.front(); q.pop();

		add++;
		if (tot[c] != cnt[c]) {check = 0; break;}
		
		for (int x: vec[c]){
			int p = parent[x];
			if (p != -1 && color[p] != color[x] && !f[color[p]]){
				f[color[p]] = 1; 
				rl.pb(color[p]);
				q.push(color[p]);
			} 
		}
	}

	for (int x: rl) 
		f[x] = 0;

	if (check) ans=min(ans,add - 1);
	dfs(x,-1,n,-1);
	vis[centroid] = 1;

	for (int to: v[centroid]){
		if(!vis[to]) go(to,n/2,dep + 1);
	}

}
signed main(){
	ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);

    int n,k;
	cin>>n>>k;

	for (int i = 1; i < n; i++){
		int a,b;
		cin>>a>>b;
		v[a].pb(b);
		v[b].pb(a);
	}

	for (int i = 1; i <= n; i++){
		cin >> color[i];
		tot[color[i]]++;
		vec[color[i]].pb(i);
	}

	ans = n;
	go(1,n,1);
	cout<<ans<<endl;
}

Subtask #1
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	12892 KB	Output is correct
2	Correct	3 ms	12940 KB	Output is correct
3	Correct	3 ms	12892 KB	Output is correct
4	Correct	3 ms	12948 KB	Output is correct
5	Correct	2 ms	12892 KB	Output is correct
6	Correct	3 ms	12944 KB	Output is correct
7	Correct	2 ms	12892 KB	Output is correct
8	Correct	3 ms	12892 KB	Output is correct
9	Correct	2 ms	12892 KB	Output is correct
10	Correct	3 ms	12892 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	12892 KB	Output is correct
2	Correct	3 ms	12940 KB	Output is correct
3	Correct	3 ms	12892 KB	Output is correct
4	Correct	3 ms	12948 KB	Output is correct
5	Correct	2 ms	12892 KB	Output is correct
6	Correct	3 ms	12944 KB	Output is correct
7	Correct	2 ms	12892 KB	Output is correct
8	Correct	3 ms	12892 KB	Output is correct
9	Correct	2 ms	12892 KB	Output is correct
10	Correct	3 ms	12892 KB	Output is correct
11	Correct	4 ms	12892 KB	Output is correct
12	Correct	4 ms	12892 KB	Output is correct
13	Correct	4 ms	12892 KB	Output is correct
14	Correct	4 ms	12956 KB	Output is correct
15	Correct	4 ms	12892 KB	Output is correct
16	Correct	4 ms	12892 KB	Output is correct
17	Correct	4 ms	13148 KB	Output is correct
18	Correct	5 ms	12984 KB	Output is correct
19	Correct	4 ms	12956 KB	Output is correct
20	Correct	3 ms	13148 KB	Output is correct
21	Correct	3 ms	13148 KB	Output is correct
22	Correct	3 ms	13148 KB	Output is correct
23	Correct	4 ms	13148 KB	Output is correct
24	Correct	5 ms	12888 KB	Output is correct
25	Correct	5 ms	13148 KB	Output is correct
26	Correct	4 ms	13144 KB	Output is correct
27	Correct	5 ms	13148 KB	Output is correct
28	Correct	5 ms	13148 KB	Output is correct
29	Correct	4 ms	13144 KB	Output is correct
30	Correct	4 ms	13148 KB	Output is correct

Subtask #3
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	291 ms	42716 KB	Output is correct
2	Correct	158 ms	43084 KB	Output is correct
3	Correct	267 ms	42188 KB	Output is correct
4	Correct	149 ms	43088 KB	Output is correct
5	Correct	293 ms	39476 KB	Output is correct
6	Correct	153 ms	43092 KB	Output is correct
7	Correct	305 ms	39880 KB	Output is correct
8	Correct	151 ms	42956 KB	Output is correct
9	Correct	407 ms	38228 KB	Output is correct
10	Correct	385 ms	35848 KB	Output is correct
11	Correct	396 ms	38548 KB	Output is correct
12	Correct	440 ms	41244 KB	Output is correct
13	Correct	388 ms	35664 KB	Output is correct
14	Correct	383 ms	41556 KB	Output is correct
15	Correct	397 ms	41312 KB	Output is correct
16	Correct	422 ms	36372 KB	Output is correct
17	Correct	394 ms	36752 KB	Output is correct
18	Correct	361 ms	36948 KB	Output is correct
19	Correct	419 ms	40276 KB	Output is correct
20	Correct	407 ms	42516 KB	Output is correct
21	Correct	2 ms	12892 KB	Output is correct

Subtask #4
59.0 / 59.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	12892 KB	Output is correct
2	Correct	3 ms	12940 KB	Output is correct
3	Correct	3 ms	12892 KB	Output is correct
4	Correct	3 ms	12948 KB	Output is correct
5	Correct	2 ms	12892 KB	Output is correct
6	Correct	3 ms	12944 KB	Output is correct
7	Correct	2 ms	12892 KB	Output is correct
8	Correct	3 ms	12892 KB	Output is correct
9	Correct	2 ms	12892 KB	Output is correct
10	Correct	3 ms	12892 KB	Output is correct
11	Correct	4 ms	12892 KB	Output is correct
12	Correct	4 ms	12892 KB	Output is correct
13	Correct	4 ms	12892 KB	Output is correct
14	Correct	4 ms	12956 KB	Output is correct
15	Correct	4 ms	12892 KB	Output is correct
16	Correct	4 ms	12892 KB	Output is correct
17	Correct	4 ms	13148 KB	Output is correct
18	Correct	5 ms	12984 KB	Output is correct
19	Correct	4 ms	12956 KB	Output is correct
20	Correct	3 ms	13148 KB	Output is correct
21	Correct	3 ms	13148 KB	Output is correct
22	Correct	3 ms	13148 KB	Output is correct
23	Correct	4 ms	13148 KB	Output is correct
24	Correct	5 ms	12888 KB	Output is correct
25	Correct	5 ms	13148 KB	Output is correct
26	Correct	4 ms	13144 KB	Output is correct
27	Correct	5 ms	13148 KB	Output is correct
28	Correct	5 ms	13148 KB	Output is correct
29	Correct	4 ms	13144 KB	Output is correct
30	Correct	4 ms	13148 KB	Output is correct
31	Correct	291 ms	42716 KB	Output is correct
32	Correct	158 ms	43084 KB	Output is correct
33	Correct	267 ms	42188 KB	Output is correct
34	Correct	149 ms	43088 KB	Output is correct
35	Correct	293 ms	39476 KB	Output is correct
36	Correct	153 ms	43092 KB	Output is correct
37	Correct	305 ms	39880 KB	Output is correct
38	Correct	151 ms	42956 KB	Output is correct
39	Correct	407 ms	38228 KB	Output is correct
40	Correct	385 ms	35848 KB	Output is correct
41	Correct	396 ms	38548 KB	Output is correct
42	Correct	440 ms	41244 KB	Output is correct
43	Correct	388 ms	35664 KB	Output is correct
44	Correct	383 ms	41556 KB	Output is correct
45	Correct	397 ms	41312 KB	Output is correct
46	Correct	422 ms	36372 KB	Output is correct
47	Correct	394 ms	36752 KB	Output is correct
48	Correct	361 ms	36948 KB	Output is correct
49	Correct	419 ms	40276 KB	Output is correct
50	Correct	407 ms	42516 KB	Output is correct
51	Correct	2 ms	12892 KB	Output is correct
52	Correct	295 ms	26128 KB	Output is correct
53	Correct	308 ms	26196 KB	Output is correct
54	Correct	291 ms	26136 KB	Output is correct
55	Correct	311 ms	26196 KB	Output is correct
56	Correct	284 ms	26056 KB	Output is correct
57	Correct	278 ms	25968 KB	Output is correct
58	Correct	253 ms	29896 KB	Output is correct
59	Correct	243 ms	30132 KB	Output is correct
60	Correct	273 ms	29268 KB	Output is correct
61	Correct	276 ms	29012 KB	Output is correct
62	Correct	172 ms	43072 KB	Output is correct
63	Correct	167 ms	43192 KB	Output is correct
64	Correct	163 ms	43088 KB	Output is correct
65	Correct	165 ms	43052 KB	Output is correct
66	Correct	200 ms	34548 KB	Output is correct
67	Correct	230 ms	34656 KB	Output is correct
68	Correct	188 ms	34508 KB	Output is correct
69	Correct	206 ms	34736 KB	Output is correct
70	Correct	215 ms	34480 KB	Output is correct
71	Correct	177 ms	34500 KB	Output is correct
72	Correct	186 ms	34640 KB	Output is correct
73	Correct	215 ms	34192 KB	Output is correct
74	Correct	195 ms	34716 KB	Output is correct
75	Correct	177 ms	34668 KB	Output is correct
76	Correct	311 ms	33752 KB	Output is correct
77	Correct	290 ms	31640 KB	Output is correct
78	Correct	375 ms	36948 KB	Output is correct
79	Correct	361 ms	34644 KB	Output is correct
80	Correct	390 ms	41968 KB	Output is correct
81	Correct	349 ms	38224 KB	Output is correct
82	Correct	372 ms	38740 KB	Output is correct
83	Correct	372 ms	35132 KB	Output is correct
84	Correct	358 ms	41148 KB	Output is correct
85	Correct	362 ms	39504 KB	Output is correct
86	Correct	385 ms	35088 KB	Output is correct
87	Correct	334 ms	36424 KB	Output is correct
88	Correct	324 ms	37576 KB	Output is correct
89	Correct	298 ms	33560 KB	Output is correct
90	Correct	319 ms	33360 KB	Output is correct
91	Correct	303 ms	35668 KB	Output is correct
92	Correct	300 ms	34436 KB	Output is correct
93	Correct	299 ms	33908 KB	Output is correct
94	Correct	307 ms	33464 KB	Output is correct
95	Correct	331 ms	34900 KB	Output is correct
96	Correct	310 ms	33620 KB	Output is correct
97	Correct	345 ms	35748 KB	Output is correct

답안 #924699

Compilation message

Subtask #1 1.0 / 1.0

Subtask #2 10.0 / 10.0

Subtask #3 30.0 / 30.0

Subtask #4 59.0 / 59.0

Subtask #1
1.0 / 1.0

Subtask #2
10.0 / 10.0

Subtask #3
30.0 / 30.0

Subtask #4
59.0 / 59.0