제출 #164148

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
164148		kostia244	Bosses (BOI16_bosses)	C++17	67 / 100	1571 ms	888 KiB

bosses

#define _GLIBCXX_DEBUG
#include<bits/stdc++.h>
#define pb push_back
using namespace std;
using ll = long long;
using vi = vector<ll>;
using vvi = vector<vi>;
int n, ans = 1e9, t = 0;
vvi g;
int d[5050];
int go(int v) {
	memset(d, -1, sizeof d);
	queue<int> q;
	q.push(v);
	d[v]=1;
	while(!q.empty()) {
		int u = q.front();
		q.pop();
		for(auto v : g[u]) {
			if(d[v]!=-1) continue;
			d[v] = d[u]+1;
			q.push(v);
		}
	}
	ll ans = 0;
	for(int i = 1; i <= n; i++)
		if(d[i]==-1) return 1e9;
		else ans += d[i];
	return ans;
}
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin >> n;
	g.resize(n+1);
	for(int k, t, i = 1; i <= n; i++) {
		cin >> k;
		while(k--) cin >> t, g[t].pb(i);
	}
	for(int i = 1; i <= n; i++) {
		ans = min(ans, go(i));
	}
	cout << ans << "\n";
}

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