oj.uz

Submission #78755

# Submission time Handle Problem Language Result Execution time Memory
78755 2018-10-08T14:13:54 Z scanhex Bosses (BOI16_bosses) C++17
100 / 100
 723 ms 1388 KB 
#include <bits/stdc++.h>

using namespace std;
using nagai = long long;
using ll = long long;

const int N = 5000;
vector<int> g[N];

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	for (int i = 0; i < n; ++i)
	{
		int k;
		cin >> k;
		for (int j = 0; j < k; ++j)
		{
			 int x;
			 cin >> x;
			 --x;
			 g[x].push_back(i);
		}
	}
	int ans = 1e9;
	for (int rt = 0; rt < n; ++rt)
	{
		vector<int> d(n, -1);
		d[rt] = 1;
		vector<int> q = {rt};
		for (int i = 0; i < q.size(); ++i)
		{
			 int x = q[i];
			 for (int y : g[x])
			 {
				  if (d[y] == -1)
					  d[y] = d[x] + 1, q.push_back(y);
			 }
		}
		if (count(d.begin(), d.end(), -1))
			continue;
		ans = min(ans, accumulate(d.begin(), d.end(), 0));
	}
	cout << ans << '\n';
	return 0;
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:34:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < q.size(); ++i)
                   ~~^~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 640 KB Output is correct
3 Correct 2 ms 640 KB Output is correct
4 Correct 2 ms 640 KB Output is correct
5 Correct 2 ms 640 KB Output is correct
6 Correct 2 ms 804 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 640 KB Output is correct
3 Correct 2 ms 640 KB Output is correct
4 Correct 2 ms 640 KB Output is correct
5 Correct 2 ms 640 KB Output is correct
6 Correct 2 ms 804 KB Output is correct
7 Correct 2 ms 804 KB Output is correct
8 Correct 2 ms 804 KB Output is correct
9 Correct 2 ms 804 KB Output is correct
10 Correct 2 ms 804 KB Output is correct
11 Correct 2 ms 804 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 640 KB Output is correct
3 Correct 2 ms 640 KB Output is correct
4 Correct 2 ms 640 KB Output is correct
5 Correct 2 ms 640 KB Output is correct
6 Correct 2 ms 804 KB Output is correct
7 Correct 2 ms 804 KB Output is correct
8 Correct 2 ms 804 KB Output is correct
9 Correct 2 ms 804 KB Output is correct
10 Correct 2 ms 804 KB Output is correct
11 Correct 2 ms 804 KB Output is correct
12 Correct 6 ms 872 KB Output is correct
13 Correct 5 ms 920 KB Output is correct
14 Correct 146 ms 1044 KB Output is correct
15 Correct 38 ms 1044 KB Output is correct
16 Correct 645 ms 1328 KB Output is correct
17 Correct 669 ms 1388 KB Output is correct
18 Correct 723 ms 1388 KB Output is correct