제출 #695226

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
695226		Ahmed_Solyman	Bosses (BOI16_bosses)	C++14	0 / 100	1 ms	468 KiB

bosses

#include<bits/stdc++.h>
using namespace std;
vector<int>adj[5005];
vector<long long>s(5005);
vector<bool>vis(5005);
vector<int>g[5005];
void dfs1(int n){
	vis[n]=1;
	for(auto i:adj[n]){
		if(!vis[i]){
			vis[i]=1;
			g[n].push_back(i);
		}
	}
	if(g[n].size()){
		for(auto i:g[n]){
			dfs1(i);
		}
	}
}
void dfs2(int n){
	s[n]=1;
	for(auto i:g[n]){
		dfs2(i);
		s[n]+=s[i];
	}
}
int main(){
	int n;cin>>n;
	for(int i=1;i<=n;i++){
		int k;cin>>k;
		for(int j=0;j<k;j++){
			int x;cin>>x;
			adj[x].push_back(i);
		}
	}
	long long ans=4e18;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			vis[j]=0;
			s[j]=0;
			g[j].clear();
		}
		dfs1(i);
		long long sum=0;
		bool valid=1;
		for(int j=1;j<=n;j++){
			if(!vis[j]){
				valid=0;
			}
		}
		if(valid){
			dfs2(i);
			for(int j=1;j<=n;j++){
				sum+=s[j];
			}
			ans=min(ans,sum);
		}
	}
	cout<<ans<<endl;
}

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