oj.uz

답안 #894627

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
894627 2023-12-28T14:35:50 Z amirhoseinfar1385 수도 (JOI20_capital_city) C++17
100 / 100
 480 ms 40112 KB 
#include<bits/stdc++.h>
using namespace std;
const int maxn=200000+10,K=200000+10;
vector<int>adj[maxn],allc[K];
int n,k,val[maxn],sz[maxn],part[maxn],visc[K],vis[maxn],now[maxn],rishe,res;

void calsz(int u,int par=0){
	now[u]=rishe;
	part[u]=par;
	visc[val[u]]=0;
	sz[u]=1;
	for(auto x:adj[u]){
		if(vis[x]==0&&x!=par){
			calsz(x,u);
			sz[u]+=sz[x];
		}
	}
}

int findcen(int u,int su,int par=0){
	for(auto x:adj[u]){
		if(vis[x]==0&&x!=par&&sz[x]*2>su){
			return findcen(x,su,u);
		}
	}
	return u;
}

void solve(int u){
	if(now[u]==-rishe){
		return ;
	}
	if(now[u]!=rishe){
		res=n+2;
		return ;
	}
	if(visc[val[u]]==0){
		res++;
		visc[val[u]]=1;
		for(auto x:allc[val[u]]){
			solve(x);
			if(res>n){
				return ;
			}
		}
	}
	now[u]=-rishe;
	solve(part[u]);
}

int cent(int u){
	int ret=n+1;
	calsz(u);
	int v=findcen(u,sz[u]);
	rishe=v;
	calsz(v,v);
	res=0;
	solve(v);
	ret=min(ret,res);
	vis[v]=1;
	for(auto x:adj[v]){
		if(vis[x]==0){
			ret=min(ret,cent(x));
		}
	}
	return ret;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>k;
	for(int i=0;i<n-1;i++){
		int u,v;
		cin>>u>>v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	for(int i=1;i<=n;i++){
		cin>>val[i];
		allc[val[i]].push_back(i);
	}
	cout<<(cent(1)-1)<<endl;
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 14168 KB Output is correct
2 Correct 4 ms 14168 KB Output is correct
3 Correct 3 ms 14364 KB Output is correct
4 Correct 3 ms 14172 KB Output is correct
5 Correct 3 ms 14264 KB Output is correct
6 Correct 3 ms 14172 KB Output is correct
7 Correct 3 ms 14168 KB Output is correct
8 Correct 3 ms 14172 KB Output is correct
9 Correct 3 ms 14172 KB Output is correct
10 Correct 3 ms 14172 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 14168 KB Output is correct
2 Correct 4 ms 14168 KB Output is correct
3 Correct 3 ms 14364 KB Output is correct
4 Correct 3 ms 14172 KB Output is correct
5 Correct 3 ms 14264 KB Output is correct
6 Correct 3 ms 14172 KB Output is correct
7 Correct 3 ms 14168 KB Output is correct
8 Correct 3 ms 14172 KB Output is correct
9 Correct 3 ms 14172 KB Output is correct
10 Correct 3 ms 14172 KB Output is correct
11 Correct 4 ms 14428 KB Output is correct
12 Correct 4 ms 14428 KB Output is correct
13 Correct 5 ms 14428 KB Output is correct
14 Correct 4 ms 14428 KB Output is correct
15 Correct 4 ms 14428 KB Output is correct
16 Correct 5 ms 14604 KB Output is correct
17 Correct 4 ms 14428 KB Output is correct
18 Correct 5 ms 14428 KB Output is correct
19 Correct 4 ms 14424 KB Output is correct
20 Correct 4 ms 14428 KB Output is correct
21 Correct 4 ms 14428 KB Output is correct
22 Correct 4 ms 14424 KB Output is correct
23 Correct 4 ms 14376 KB Output is correct
24 Correct 4 ms 14428 KB Output is correct
25 Correct 4 ms 14348 KB Output is correct
26 Correct 5 ms 14424 KB Output is correct
27 Correct 4 ms 14428 KB Output is correct
28 Correct 4 ms 14364 KB Output is correct
29 Correct 6 ms 14428 KB Output is correct
30 Correct 4 ms 14428 KB Output is correct

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 294 ms 39504 KB Output is correct
2 Correct 132 ms 39956 KB Output is correct
3 Correct 309 ms 39452 KB Output is correct
4 Correct 138 ms 40016 KB Output is correct
5 Correct 317 ms 36944 KB Output is correct
6 Correct 144 ms 40096 KB Output is correct
7 Correct 358 ms 37300 KB Output is correct
8 Correct 140 ms 39764 KB Output is correct
9 Correct 415 ms 35668 KB Output is correct
10 Correct 364 ms 33568 KB Output is correct
11 Correct 335 ms 36180 KB Output is correct
12 Correct 373 ms 37972 KB Output is correct
13 Correct 345 ms 33164 KB Output is correct
14 Correct 376 ms 38268 KB Output is correct
15 Correct 343 ms 37968 KB Output is correct
16 Correct 387 ms 34384 KB Output is correct
17 Correct 352 ms 34716 KB Output is correct
18 Correct 336 ms 35104 KB Output is correct
19 Correct 421 ms 37272 KB Output is correct
20 Correct 380 ms 39096 KB Output is correct
21 Correct 3 ms 14168 KB Output is correct

Subtask #4
59.0 / 59.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 14168 KB Output is correct
2 Correct 4 ms 14168 KB Output is correct
3 Correct 3 ms 14364 KB Output is correct
4 Correct 3 ms 14172 KB Output is correct
5 Correct 3 ms 14264 KB Output is correct
6 Correct 3 ms 14172 KB Output is correct
7 Correct 3 ms 14168 KB Output is correct
8 Correct 3 ms 14172 KB Output is correct
9 Correct 3 ms 14172 KB Output is correct
10 Correct 3 ms 14172 KB Output is correct
11 Correct 4 ms 14428 KB Output is correct
12 Correct 4 ms 14428 KB Output is correct
13 Correct 5 ms 14428 KB Output is correct
14 Correct 4 ms 14428 KB Output is correct
15 Correct 4 ms 14428 KB Output is correct
16 Correct 5 ms 14604 KB Output is correct
17 Correct 4 ms 14428 KB Output is correct
18 Correct 5 ms 14428 KB Output is correct
19 Correct 4 ms 14424 KB Output is correct
20 Correct 4 ms 14428 KB Output is correct
21 Correct 4 ms 14428 KB Output is correct
22 Correct 4 ms 14424 KB Output is correct
23 Correct 4 ms 14376 KB Output is correct
24 Correct 4 ms 14428 KB Output is correct
25 Correct 4 ms 14348 KB Output is correct
26 Correct 5 ms 14424 KB Output is correct
27 Correct 4 ms 14428 KB Output is correct
28 Correct 4 ms 14364 KB Output is correct
29 Correct 6 ms 14428 KB Output is correct
30 Correct 4 ms 14428 KB Output is correct
31 Correct 294 ms 39504 KB Output is correct
32 Correct 132 ms 39956 KB Output is correct
33 Correct 309 ms 39452 KB Output is correct
34 Correct 138 ms 40016 KB Output is correct
35 Correct 317 ms 36944 KB Output is correct
36 Correct 144 ms 40096 KB Output is correct
37 Correct 358 ms 37300 KB Output is correct
38 Correct 140 ms 39764 KB Output is correct
39 Correct 415 ms 35668 KB Output is correct
40 Correct 364 ms 33568 KB Output is correct
41 Correct 335 ms 36180 KB Output is correct
42 Correct 373 ms 37972 KB Output is correct
43 Correct 345 ms 33164 KB Output is correct
44 Correct 376 ms 38268 KB Output is correct
45 Correct 343 ms 37968 KB Output is correct
46 Correct 387 ms 34384 KB Output is correct
47 Correct 352 ms 34716 KB Output is correct
48 Correct 336 ms 35104 KB Output is correct
49 Correct 421 ms 37272 KB Output is correct
50 Correct 380 ms 39096 KB Output is correct
51 Correct 3 ms 14168 KB Output is correct
52 Correct 217 ms 27220 KB Output is correct
53 Correct 247 ms 26968 KB Output is correct
54 Correct 272 ms 27204 KB Output is correct
55 Correct 223 ms 27216 KB Output is correct
56 Correct 236 ms 27220 KB Output is correct
57 Correct 214 ms 27208 KB Output is correct
58 Correct 307 ms 29012 KB Output is correct
59 Correct 257 ms 29268 KB Output is correct
60 Correct 363 ms 28748 KB Output is correct
61 Correct 403 ms 28664 KB Output is correct
62 Correct 144 ms 40112 KB Output is correct
63 Correct 133 ms 39912 KB Output is correct
64 Correct 145 ms 39704 KB Output is correct
65 Correct 148 ms 40080 KB Output is correct
66 Correct 257 ms 33156 KB Output is correct
67 Correct 271 ms 33100 KB Output is correct
68 Correct 247 ms 33204 KB Output is correct
69 Correct 241 ms 33208 KB Output is correct
70 Correct 266 ms 33068 KB Output is correct
71 Correct 268 ms 33124 KB Output is correct
72 Correct 206 ms 32972 KB Output is correct
73 Correct 253 ms 32548 KB Output is correct
74 Correct 208 ms 33168 KB Output is correct
75 Correct 272 ms 33172 KB Output is correct
76 Correct 321 ms 32080 KB Output is correct
77 Correct 325 ms 30644 KB Output is correct
78 Correct 433 ms 34560 KB Output is correct
79 Correct 454 ms 32904 KB Output is correct
80 Correct 429 ms 38772 KB Output is correct
81 Correct 459 ms 35792 KB Output is correct
82 Correct 451 ms 35720 KB Output is correct
83 Correct 411 ms 33524 KB Output is correct
84 Correct 473 ms 38032 KB Output is correct
85 Correct 416 ms 36588 KB Output is correct
86 Correct 467 ms 32872 KB Output is correct
87 Correct 480 ms 34292 KB Output is correct
88 Correct 365 ms 35152 KB Output is correct
89 Correct 296 ms 32032 KB Output is correct
90 Correct 303 ms 31948 KB Output is correct
91 Correct 289 ms 33948 KB Output is correct
92 Correct 361 ms 32856 KB Output is correct
93 Correct 298 ms 32340 KB Output is correct
94 Correct 326 ms 32068 KB Output is correct
95 Correct 355 ms 33048 KB Output is correct
96 Correct 394 ms 32332 KB Output is correct
97 Correct 309 ms 33856 KB Output is correct