Submission #767602

#	Time	Username	Problem	Language	Result	Execution time	Memory
767602		1ne	Bosses (BOI16_bosses)	C++14	67 / 100	1546 ms	1004 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 = 1e9;
	for (int i = 0;i<n;++i){
		queue<int>q;
		int curv = 1;
		int ans = 0;
		vector<int>visited(n,false);
		vector<int>parent(n,-1);
		vector<int>depth(n,0);
		visited[i] = true;
		vector<vector<int>>nx(n);
		q.push(i);
		vector<int>cost(n,1);
		while(!q.empty()){
			auto u = q.front();
			q.pop();
			for (auto x:adj[u]){
				if (!visited[x]){
					visited[x] = true;
					parent[x] = u;
					depth[x] = depth[u] + 1;
					nx[u].push_back(x);
					q.push(x);
					curv++;		
				}	
			}
		}
		if (curv == n){
			vector<int>order(n);
			iota(order.begin(),order.end(),0);
			sort(order.begin(),order.end(),[&](int x,int y){
			   return depth[x] > depth[y];
			});
			for (auto j:order){
				for (auto y:nx[j]){
					cost[j]+=cost[y];
				}         
			}
			for (int j = 0;j<n;++j){
			//	cout<<cost[j]<<" ";
				ans+=cost[j];
			}
			//cout<<'\n';
			pos = min(pos,ans);
		}
	}
	cout<<pos<<'\n';	
	return 0;
}

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