#include <bits/stdc++.h>
using namespace std;
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int n, k;
cin >> n >> k;
vector<set<int> > g(n);
set<pair<int, int> > pq;
for (int u = 0, d; u < n; u++)
{
cin >> d;
for (int j = 0, v; j < d; j++) cin >> v, g[u].insert(v);
pq.insert({d, u});
}
int ans = 1;
while (!pq.empty())
{
int u = pq.begin()->second;
pq.erase(pq.begin());
vector<int> c = {u};
for (int v : g[u]) c.push_back(v);
vector<int> g2(c.size(), 0);
for (int i = 0; i < c.size(); i++) for (int j = 0; j < c.size(); j++)
if (g[i].count(j)) g2[i] |= (1 << j);
for (int i = 1; i < (1 << c.size()); i += 2) // prvy bit musime mat
{
int cnt = __builtin_popcount(i);
if (cnt <= ans) continue;
bool ok = true;
for (int u = 1; u < c.size(); u++)
{
if (!(i & (1<<u))) continue;
for (int v = u+1; v < c.size(); v++)
{
if (!(i & (1<<v))) continue;
if (!(g2[u] & (1<<v)))
{
ok = false;
break;
}
}
if (!ok) break;
}
if (ok) ans = max(ans, cnt);
}
for (int v : g[u])
{
pq.erase({g[v].size(), v});
g[v].erase(u);
pq.insert({g[v].size(), v});
}
}
cout << ans << "\n";
return 0;
}
Compilation message
politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:26:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | for (int i = 0; i < c.size(); i++) for (int j = 0; j < c.size(); j++)
| ~~^~~~~~~~~~
politicaldevelopment.cpp:26:62: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | for (int i = 0; i < c.size(); i++) for (int j = 0; j < c.size(); j++)
| ~~^~~~~~~~~~
politicaldevelopment.cpp:33:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
33 | for (int u = 1; u < c.size(); u++)
| ~~^~~~~~~~~~
politicaldevelopment.cpp:36:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
36 | for (int v = u+1; v < c.size(); v++)
| ~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 4 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 5 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 6 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 7 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 8 |
Correct |
2 ms |
716 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
2 ms |
716 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 4 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 5 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 6 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 7 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 8 |
Correct |
2 ms |
716 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
2 ms |
716 KB |
Output is correct |
| 11 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 12 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
6 ms |
1216 KB |
Output is correct |
| 15 |
Correct |
0 ms |
204 KB |
Output is correct |
| 16 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 17 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 18 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
716 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 4 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 5 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 6 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 7 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 8 |
Correct |
2 ms |
716 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
2 ms |
716 KB |
Output is correct |
| 11 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 12 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
6 ms |
1216 KB |
Output is correct |
| 15 |
Correct |
0 ms |
204 KB |
Output is correct |
| 16 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 17 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 18 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 4 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 5 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 6 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 7 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 8 |
Correct |
2 ms |
716 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
2 ms |
716 KB |
Output is correct |
| 11 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 12 |
Correct |
7 ms |
1228 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
6 ms |
1216 KB |
Output is correct |
| 15 |
Correct |
0 ms |
204 KB |
Output is correct |
| 16 |
Correct |
6 ms |
1228 KB |
Output is correct |
| 17 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 18 |
Halted |
0 ms |
0 KB |
- |
