oj.uz

답안 #623473

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
623473 2022-08-05T16:40:43 Z errorgorn 수도 (JOI20_capital_city) C++17
11 / 100
 3000 ms 30028 KB 
//もう布団の中から出たくない
//布団の外は寒すぎるから
//布団の中から出たくない
//布団の中はあたたかすぎるから

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << ": " << x << endl

#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define lb lower_bound
#define ub upper_bound

#define rep(x,start,end) for(int x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

int n,k;
vector<int> al[200005];
int arr[200005];
vector<int> pos[200005];

int pp[200005];
void dfs(int i,int p){
	pp[i]=p;
	for (auto it:al[i]){
		if (it==p) continue;
		dfs(it,i);
	}
}

bool vis[200005];
bool vis2[200005];

signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	cin>>n>>k;
	
	int a,b;
	rep(x,1,n){
		cin>>a>>b;
		al[a].pub(b);
		al[b].pub(a);
	}
	rep(x,1,n+1) cin>>arr[x];
	rep(x,1,n+1) pos[arr[x]].pub(x);
	
	int ans=1e9;
	rep(x,1,n+1){
		dfs(x,-1);
		
		rep(x,1,n+1) vis[x]=vis2[x]=false;
		vis[x]=true;
		vector<int> stk={x};
		int curr=0;
		while (!stk.empty()){
			int u=stk.back(); stk.pob();
			
			if (!vis2[arr[u]]){
				vis2[arr[u]]=true;
				curr++;
				
				for (auto it:pos[arr[u]]) if (!vis[it]){
					vis[it]=true;
					stk.pub(it);
				}
			}
			if (pp[u]!=-1 && !vis[pp[u]]){
				vis[pp[u]]=true;
				stk.pub(pp[u]);
			}
		}
		
		//cout<<x<<" "<<curr<<endl;
		ans=min(ans,curr);
	}
	
	cout<<ans-1<<endl;
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 6 ms 9740 KB Output is correct
3 Correct 5 ms 9744 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 5 ms 9668 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9732 KB Output is correct
9 Correct 5 ms 9732 KB Output is correct
10 Correct 5 ms 9716 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 6 ms 9740 KB Output is correct
3 Correct 5 ms 9744 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 5 ms 9668 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9732 KB Output is correct
9 Correct 5 ms 9732 KB Output is correct
10 Correct 5 ms 9716 KB Output is correct
11 Correct 128 ms 9812 KB Output is correct
12 Correct 126 ms 9908 KB Output is correct
13 Correct 123 ms 9912 KB Output is correct
14 Correct 123 ms 9912 KB Output is correct
15 Correct 55 ms 9912 KB Output is correct
16 Correct 74 ms 9920 KB Output is correct
17 Correct 57 ms 9912 KB Output is correct
18 Correct 59 ms 9924 KB Output is correct
19 Correct 58 ms 9812 KB Output is correct
20 Correct 58 ms 9916 KB Output is correct
21 Correct 60 ms 9940 KB Output is correct
22 Correct 59 ms 9908 KB Output is correct
23 Correct 85 ms 9940 KB Output is correct
24 Correct 63 ms 9908 KB Output is correct
25 Correct 105 ms 9948 KB Output is correct
26 Correct 103 ms 9952 KB Output is correct
27 Correct 102 ms 10028 KB Output is correct
28 Correct 89 ms 9936 KB Output is correct
29 Correct 91 ms 9940 KB Output is correct
30 Correct 90 ms 9940 KB Output is correct

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3086 ms 30028 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 59.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 6 ms 9740 KB Output is correct
3 Correct 5 ms 9744 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 5 ms 9668 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9732 KB Output is correct
9 Correct 5 ms 9732 KB Output is correct
10 Correct 5 ms 9716 KB Output is correct
11 Correct 128 ms 9812 KB Output is correct
12 Correct 126 ms 9908 KB Output is correct
13 Correct 123 ms 9912 KB Output is correct
14 Correct 123 ms 9912 KB Output is correct
15 Correct 55 ms 9912 KB Output is correct
16 Correct 74 ms 9920 KB Output is correct
17 Correct 57 ms 9912 KB Output is correct
18 Correct 59 ms 9924 KB Output is correct
19 Correct 58 ms 9812 KB Output is correct
20 Correct 58 ms 9916 KB Output is correct
21 Correct 60 ms 9940 KB Output is correct
22 Correct 59 ms 9908 KB Output is correct
23 Correct 85 ms 9940 KB Output is correct
24 Correct 63 ms 9908 KB Output is correct
25 Correct 105 ms 9948 KB Output is correct
26 Correct 103 ms 9952 KB Output is correct
27 Correct 102 ms 10028 KB Output is correct
28 Correct 89 ms 9936 KB Output is correct
29 Correct 91 ms 9940 KB Output is correct
30 Correct 90 ms 9940 KB Output is correct
31 Execution timed out 3086 ms 30028 KB Time limit exceeded
32 Halted 0 ms 0 KB -