Submission #79523

#	Time	Username	Problem	Language	Result	Execution time	Memory
79523		Dat160601	Bosses (BOI16_bosses)	C++17	100 / 100	619 ms	948 KiB

bosses

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
int n,x,u,v,ans=1e9;
vector <int> edge[5007];
int vis[5007];
void go(int root){
	queue <int> q;
	q.push(root);
	vis[root]=1;
	int ret=0, cnt=0;
	while(!q.empty()){
		int u=q.front();
		cnt++;
		q.pop();
		ret+=vis[u];
		for(int v:edge[u]){
			if(!vis[v]){
				vis[v]=vis[u]+1;
				q.push(v);
			}
		}
	}
	if(cnt==n) ans=min(ans,ret);
}
int main(){
	ios_base::sync_with_stdio(0);
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>x;
		while(x>0){
			x--;
			cin>>v;
			edge[v].pb(i);
		}
	}
	for(int i=1;i<=n;i++){
		memset(vis,0,sizeof(vis));
		go(i);
	}
	cout<<ans;
}

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