Submission #767593

#	Time	Username	Problem	Language	Result	Execution time	Memory
767593		1ne	Bosses (BOI16_bosses)	C++14	0 / 100	1 ms	212 KiB

bosses

/*
*  author : Apiram                  
*  created: 27.06.2023 03:25:28
*/

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

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int n;cin>>n;
	vector<vector<int>>adj(n);
	for (int i = 0;i<n;++i){
		int k;cin>>k;
		for (int j = 0;j<k;++j){
			int x;cin>>x;
			--x;
			adj[x].push_back(i);
		}
	}
	int pos = n + 1;
	for (int i = 0;i<n;++i){
		priority_queue<pair<int,int>>q;
		int curv = 1;
		int ans = 0;
		vector<int>visited(n,false);
		visited[i] = true;
		q.push({0,i});
		while(!q.empty()){
			auto u = q.top();
			q.pop();
			ans = max(ans,-u.first);
			for (auto x:adj[u.second]){
				if (!visited[x]){
					visited[x] = true;
					q.push({-(-u.first + 1),x});
					curv++;		
				}	
			}
		}
		if (curv == n){
			pos = min(pos,ans);
		}
	}
	cout<<pos * 2 + n<<'\n';	
	return 0;
}

• Subtask 1: 0 / 22
• Subtask 2: 0 / 45
• Subtask 3: 0 / 33