Submission #954678

#	Time	Username	Problem	Language	Result	Execution time	Memory
954678		4QT0R	Bosses (BOI16_bosses)	C++17	0 / 100	1 ms	576 KiB

bosses

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

int visited[5002];
vector<int> graph[5002];
int iter=0;
queue<pair<int,int>> q;

int bfs(int v){
	visited[v]=iter;
	q.push({v,1});
	int ans=0;
	while(q.size()){
		auto [v,d]=q.front();
		q.pop();
		ans+=d;
		for (auto u : graph[v])if (visited[u]!=iter){
			visited[u]=iter;
			q.push({u,d+1});
		}
	}
	return ans;
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int n,k,v;
	cin >> n;
	for (int i = 1; i<=n; i++){
		cin >> k;
		for (int j = 1; j<=k; j++){
			cin >> v;
			graph[v].push_back(i);
		}
	}
	int mn=1e9;
	for (int i = 1; i<=n; i++){
		iter++;
		mn=min(mn,bfs(i));
	}
	cout << mn << '\n';
}

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