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Submission #973859

# Submission time Handle Problem Language Result Execution time Memory
973859 2024-05-02T11:59:06 Z Halym2007 Bosses (BOI16_bosses) C++17
100 / 100
 933 ms 1248 KB 
#include <bits/stdc++.h>
using namespace std;
const int N = 5e3 + 5;
#define ll long long
#define pb push_back
#define sz size()

ll n, sub[N], vis[N];
vector <int> v[N], p[N];

void solve (int x, int pr) {
	sub[x] = 1;
	for (int i : p[x]) {
		if (i == pr) continue;
		solve (i, x);
		sub[x] += sub[i];
	}
}

ll root(int x) {
	queue <int> q;
	for (int i = 1; i <= n; ++i) {
		vis[i] = 0;
		sub[i] = 0;
		p[i].clear();
	}
	q.push(x);
	vis[x] = 1;
	while (!q.empty()) {
		int x = q.front();
		q.pop();
		for (int i : v[x]) {
			if (vis[i]) continue;
			p[x].pb (i);
			vis[i] = 1;
			q.push(i);
		}
	}
	for (int i = 1; i <= n; ++i) {
		if (!vis[i]) return -1;
	}
	solve (x, -1);
	ll ret = 0;
	for (int i = 1; i <= n; ++i) {
		ret += sub[i];
	}
	return ret;
}


int main () {
//	freopen ("input.txt", "r", stdin);
	cin >> n;
	for (int i = 1; i <= n; ++i) {
		int k;
		cin >> k;
		while (k--) {
			ll x;
			cin >> x;
			v[x].pb (i);
		}
	}
	ll jog = 1e18;
	for (int i = 1; i <= n; ++i) {
		ll jj = root (i);
		if (~jj) {
			jog = min (jog, jj);
		}
	}
	cout << jog;
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 648 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 0 ms 604 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 648 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 648 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 4 ms 604 KB Output is correct
13 Correct 4 ms 600 KB Output is correct
14 Correct 147 ms 860 KB Output is correct
15 Correct 24 ms 860 KB Output is correct
16 Correct 549 ms 1248 KB Output is correct
17 Correct 882 ms 856 KB Output is correct
18 Correct 933 ms 860 KB Output is correct