Submission #1128402

#	Time	Username	Problem	Language	Result	Execution time	Memory
1128402		stdfloat	Political Development (BOI17_politicaldevelopment)	C++20	16 / 100	330 ms	312532 KiB

politicaldevelopment

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

using ll = long long;

int main() {
	ios::sync_with_stdio(false); cin.tie(nullptr);

	int n, k;
	cin	>> n >> k;

	vector<int> E[n];
	vector<vector<bool>> vis(n, vector<bool>(n));
	for (int i = 0; i < n; i++) {
		int d;
		cin >> d;
		while (d--) {
			int y;
			cin >> y;

			vis[i][y] = true;
			E[i].push_back(y);
		}
	}

	int mx = 1;
	for (int i = 0; i < n; i++) {
		for (auto j : E[i]) {
			if (!vis[j][i]) continue;

			mx = max(mx, 2);
			for (auto k : E[i])
				if (vis[k][i] && vis[k][j]) mx = max(mx, 3);
		}
	}

	cout << mx;
}

• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23