oj.uz

Submission #550264

# Submission time Handle Problem Language Result Execution time Memory
550264 2022-04-17T19:07:19 Z Antekb Capital City (JOI20_capital_city) C++14
100 / 100
 824 ms 46808 KB 
#include<bits/stdc++.h>
using namespace std;
const int N=2e5+5;
int blo[N], col[N], par[N], vis[N], typ[N], siz[N];
vector<int> co[N];
vector<int> E[N];
int cent;
void color(int v, int p, int c, int n){
	col[v]=c;
	bool czy=1;
	siz[v]=1;
	for(int u:E[v]){
		if(!blo[u] && u!=p){
			color(u, v, c, n);
			siz[v]+=siz[u];
			if(siz[u]*2>n)czy=0;
		}
	}
	if(siz[v]*2<n)czy=0;
	if(czy)cent=v;
}
void dfs(int v){
	//cout<<v<<" "<<par[v]<<col[v]<<" "<<typ[v]<<"q\n";
	for(int u:E[v]){
		if(u!=par[v] && !blo[u]){
			par[u]=v;
			dfs(u);
		}
	}
}
int wsk=1;
int ans=N;
void solve(int v, int id){
	//cout<<v<<" "<<id<<"\n";
	/*for(int u=1; u<=12; u++)if(col[u]==id){
		assert(!blo[u]);
		cout<<u<<" ";
	}
		cout<<"\n";*/
	par[v]=0;
	dfs(v);
	vector<int> V;
	V.push_back(typ[v]);
	vis[typ[v]]=1;
	for(int i=0; i<V.size(); i++){
		int c=V[i];
		for(int v:co[c]){
			//cout<<v<<" "<<col[v]<<" "<<typ[v]<<"\n";
			if(col[v]!=id){
				for(int u:V)vis[u]=0;
				return;
			}
			if(par[v] && !vis[typ[par[v]]]){
				vis[typ[par[v]]]=1;
				V.push_back(typ[par[v]]);
			}
		}
	}
	//cout<<V.size()<<"\n";
	ans=min(ans, (int)V.size());
	for(int u:V)vis[u]=0;
}
void rek(int v, int n){
	cent=v;
	color(v, 0, wsk++, n);
	solve(cent, col[cent]);
	blo[cent]=1;
	for(int u:E[cent])if(!blo[u])rek(u, siz[u]);
}
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
int main(){
	int n, k;
	cin>>n>>k;
	for(int i=1; i<n; i++){
		int u, v;
		cin>>u>>v;
		E[u].push_back(v);
		E[v].push_back(u);
	}
	for(int i=1; i<=n; i++){
		cin>>typ[i];
		co[typ[i]].push_back(i);
	}
	vector<int> kol;
	for(int i=1; i<=n; i++)kol.push_back(i);
	/*shuffle(kol.begin(), kol.end(), rng);
	for(int i:kol){
		solve(i, col[i]);
		blo[i]=1;
		for(int u:E[i])if(!blo[u])color(u, i, wsk++);
	}*/
	rek(1, n);
	cout<<ans-1<<"\n";
}

Compilation message

capital_city.cpp: In function 'void solve(int, int)':
capital_city.cpp:45:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |  for(int i=0; i<V.size(); i++){
      |               ~^~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9712 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 5 ms 9708 KB Output is correct
4 Correct 5 ms 9704 KB Output is correct
5 Correct 6 ms 9704 KB Output is correct
6 Correct 6 ms 9704 KB Output is correct
7 Correct 5 ms 9708 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 5 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9712 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 5 ms 9708 KB Output is correct
4 Correct 5 ms 9704 KB Output is correct
5 Correct 6 ms 9704 KB Output is correct
6 Correct 6 ms 9704 KB Output is correct
7 Correct 5 ms 9708 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 5 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 8 ms 9812 KB Output is correct
12 Correct 9 ms 9812 KB Output is correct
13 Correct 8 ms 9812 KB Output is correct
14 Correct 8 ms 9852 KB Output is correct
15 Correct 7 ms 9940 KB Output is correct
16 Correct 7 ms 9812 KB Output is correct
17 Correct 7 ms 9940 KB Output is correct
18 Correct 8 ms 9908 KB Output is correct
19 Correct 8 ms 9976 KB Output is correct
20 Correct 7 ms 10068 KB Output is correct
21 Correct 7 ms 9972 KB Output is correct
22 Correct 7 ms 9972 KB Output is correct
23 Correct 8 ms 9940 KB Output is correct
24 Correct 8 ms 9940 KB Output is correct
25 Correct 9 ms 9980 KB Output is correct
26 Correct 9 ms 10032 KB Output is correct
27 Correct 9 ms 9940 KB Output is correct
28 Correct 9 ms 9932 KB Output is correct
29 Correct 12 ms 9856 KB Output is correct
30 Correct 8 ms 9940 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 571 ms 42812 KB Output is correct
2 Correct 307 ms 43272 KB Output is correct
3 Correct 609 ms 42372 KB Output is correct
4 Correct 308 ms 43244 KB Output is correct
5 Correct 652 ms 38796 KB Output is correct
6 Correct 288 ms 43452 KB Output is correct
7 Correct 583 ms 39220 KB Output is correct
8 Correct 288 ms 42876 KB Output is correct
9 Correct 668 ms 37040 KB Output is correct
10 Correct 729 ms 34164 KB Output is correct
11 Correct 792 ms 37664 KB Output is correct
12 Correct 824 ms 40840 KB Output is correct
13 Correct 736 ms 33928 KB Output is correct
14 Correct 772 ms 41436 KB Output is correct
15 Correct 806 ms 40968 KB Output is correct
16 Correct 820 ms 35068 KB Output is correct
17 Correct 729 ms 35624 KB Output is correct
18 Correct 747 ms 35932 KB Output is correct
19 Correct 692 ms 39800 KB Output is correct
20 Correct 711 ms 42476 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct

Subtask #4
59.0 / 59.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9712 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 5 ms 9708 KB Output is correct
4 Correct 5 ms 9704 KB Output is correct
5 Correct 6 ms 9704 KB Output is correct
6 Correct 6 ms 9704 KB Output is correct
7 Correct 5 ms 9708 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 5 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 8 ms 9812 KB Output is correct
12 Correct 9 ms 9812 KB Output is correct
13 Correct 8 ms 9812 KB Output is correct
14 Correct 8 ms 9852 KB Output is correct
15 Correct 7 ms 9940 KB Output is correct
16 Correct 7 ms 9812 KB Output is correct
17 Correct 7 ms 9940 KB Output is correct
18 Correct 8 ms 9908 KB Output is correct
19 Correct 8 ms 9976 KB Output is correct
20 Correct 7 ms 10068 KB Output is correct
21 Correct 7 ms 9972 KB Output is correct
22 Correct 7 ms 9972 KB Output is correct
23 Correct 8 ms 9940 KB Output is correct
24 Correct 8 ms 9940 KB Output is correct
25 Correct 9 ms 9980 KB Output is correct
26 Correct 9 ms 10032 KB Output is correct
27 Correct 9 ms 9940 KB Output is correct
28 Correct 9 ms 9932 KB Output is correct
29 Correct 12 ms 9856 KB Output is correct
30 Correct 8 ms 9940 KB Output is correct
31 Correct 571 ms 42812 KB Output is correct
32 Correct 307 ms 43272 KB Output is correct
33 Correct 609 ms 42372 KB Output is correct
34 Correct 308 ms 43244 KB Output is correct
35 Correct 652 ms 38796 KB Output is correct
36 Correct 288 ms 43452 KB Output is correct
37 Correct 583 ms 39220 KB Output is correct
38 Correct 288 ms 42876 KB Output is correct
39 Correct 668 ms 37040 KB Output is correct
40 Correct 729 ms 34164 KB Output is correct
41 Correct 792 ms 37664 KB Output is correct
42 Correct 824 ms 40840 KB Output is correct
43 Correct 736 ms 33928 KB Output is correct
44 Correct 772 ms 41436 KB Output is correct
45 Correct 806 ms 40968 KB Output is correct
46 Correct 820 ms 35068 KB Output is correct
47 Correct 729 ms 35624 KB Output is correct
48 Correct 747 ms 35932 KB Output is correct
49 Correct 692 ms 39800 KB Output is correct
50 Correct 711 ms 42476 KB Output is correct
51 Correct 6 ms 9728 KB Output is correct
52 Correct 533 ms 23204 KB Output is correct
53 Correct 556 ms 26112 KB Output is correct
54 Correct 550 ms 26248 KB Output is correct
55 Correct 565 ms 26212 KB Output is correct
56 Correct 572 ms 26076 KB Output is correct
57 Correct 495 ms 26116 KB Output is correct
58 Correct 528 ms 30556 KB Output is correct
59 Correct 563 ms 30940 KB Output is correct
60 Correct 591 ms 30172 KB Output is correct
61 Correct 585 ms 29624 KB Output is correct
62 Correct 303 ms 46808 KB Output is correct
63 Correct 292 ms 46736 KB Output is correct
64 Correct 293 ms 46432 KB Output is correct
65 Correct 285 ms 46636 KB Output is correct
66 Correct 394 ms 36556 KB Output is correct
67 Correct 456 ms 36348 KB Output is correct
68 Correct 446 ms 36416 KB Output is correct
69 Correct 403 ms 36512 KB Output is correct
70 Correct 442 ms 36428 KB Output is correct
71 Correct 414 ms 36532 KB Output is correct
72 Correct 435 ms 36424 KB Output is correct
73 Correct 422 ms 35388 KB Output is correct
74 Correct 393 ms 36492 KB Output is correct
75 Correct 445 ms 36500 KB Output is correct
76 Correct 612 ms 34864 KB Output is correct
77 Correct 600 ms 32636 KB Output is correct
78 Correct 652 ms 38932 KB Output is correct
79 Correct 693 ms 36304 KB Output is correct
80 Correct 728 ms 45004 KB Output is correct
81 Correct 660 ms 40908 KB Output is correct
82 Correct 673 ms 40828 KB Output is correct
83 Correct 699 ms 36900 KB Output is correct
84 Correct 728 ms 43996 KB Output is correct
85 Correct 806 ms 42068 KB Output is correct
86 Correct 807 ms 36452 KB Output is correct
87 Correct 794 ms 38520 KB Output is correct
88 Correct 759 ms 39668 KB Output is correct
89 Correct 690 ms 34912 KB Output is correct
90 Correct 674 ms 34896 KB Output is correct
91 Correct 667 ms 37652 KB Output is correct
92 Correct 634 ms 35956 KB Output is correct
93 Correct 635 ms 35708 KB Output is correct
94 Correct 583 ms 34800 KB Output is correct
95 Correct 609 ms 36528 KB Output is correct
96 Correct 609 ms 35032 KB Output is correct
97 Correct 622 ms 37544 KB Output is correct