Submission #282831

#	Time	Username	Problem	Language	Result	Execution time	Memory
282831		wutwere	Bosses (BOI16_bosses)	C++17	100 / 100	982 ms	760 KiB

bosses

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

vector<int> boss[5001];

int main() {
	ios::sync_with_stdio(0); cin.tie(0);
	int n; cin >> n;
	for (int i = 1; i <= n; i++) {
		int k; cin >> k;
		for (int j = 0; j < k; j++) {
			int b; cin >> b;
			boss[b].push_back(i);
		}
	}
	int ans = 1e9;
	for (int i = 1; i <= n; i++) {
		vector<bool> vis(n + 1);
		int nodes = 0, sum = 0;
		queue<pair<int, int>> q;
		q.push({i, 1});
		while (!q.empty()) {
			int cur = q.front().first, dep = q.front().second;
			q.pop();
			if (vis[cur]) continue;
			vis[cur] = true;
			nodes++;
			sum += dep;
			for (int b : boss[cur]) {
				q.push({b, dep + 1});
			}
		}
		if (nodes == n) {
			// cerr << "D " << i << ' ' << sum << '\n';
			ans = min(ans, sum);
		}
	}
	cout << ans;
}

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