Submission #478056

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
478056	2021-10-05T12:37:16 Z	Sohsoh84	Political Development (BOI17_politicaldevelopment)	C++17	16 / 100	314 ms	69188 KB

politicaldevelopment

// ?
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll, ll> pll;

#define all(x)			(x).begin(),(x).end()
#define X			first
#define Y			second
#define sep			' '
#define endl			'\n'
#define debug(x)		cerr << #x << ": " <<  x << endl;

const ll MAXN = 1e6 + 10;

set<int> adj[MAXN];
set<pll> st;
int n, k, ans = 1, msk_adj[MAXN];
bool dp[MAXN];

int main() {
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	cin >> n >> k;
	for (int i = 1; i <= n; i++) {
		int d;
		cin >> d;
		for (int j = 1; j <= d; j++) {
			int v;
			cin >> v;
			v++;
			adj[i].insert(v);
		}
		
		st.insert({adj[i].size(), i});
	}

	while (!st.empty()) {
		int v = st.begin() -> Y;
		st.erase(st.begin());

		vector<int> vec;
		for (int e : adj[v]) {
			st.erase({adj[e].size(), e});
			adj[e].erase(v);
			vec.push_back(e);
			st.insert({adj[e].size(), e});
		}

		int sz = vec.size();
		if (sz > k) assert(false);
		for (int i = 0; i < sz; i++)
			for (int j = 0; j < sz; j++)
				msk_adj[i] ^= (adj[vec[i]].find(vec[j]) == adj[vec[i]].end() ? 0 : (1 << j));

		dp[0] = true;
		for (int msk = 1; msk < (1 << sz); msk++) {
			int ind = __builtin_ctz(msk), tmsk = msk - (1 << ind);
			dp[msk] = (dp[tmsk] && (tmsk & msk_adj[ind]) == tmsk);
		
			if (dp[msk]) ans = max(ans, __builtin_popcount(msk) + 1);
		}

	}

	cout << ans << endl;
	return 0; 
}

Subtask #1

4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	47288 KB	Output is correct
2	Correct	24 ms	47204 KB	Output is correct
3	Correct	31 ms	48004 KB	Output is correct
4	Correct	30 ms	47956 KB	Output is correct
5	Correct	32 ms	47948 KB	Output is correct
6	Correct	30 ms	47948 KB	Output is correct
7	Correct	29 ms	48076 KB	Output is correct
8	Correct	28 ms	47556 KB	Output is correct
9	Correct	25 ms	47180 KB	Output is correct
10	Correct	29 ms	47608 KB	Output is correct

Subtask #2

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	47288 KB	Output is correct
2	Correct	24 ms	47204 KB	Output is correct
3	Correct	31 ms	48004 KB	Output is correct
4	Correct	30 ms	47956 KB	Output is correct
5	Correct	32 ms	47948 KB	Output is correct
6	Correct	30 ms	47948 KB	Output is correct
7	Correct	29 ms	48076 KB	Output is correct
8	Correct	28 ms	47556 KB	Output is correct
9	Correct	25 ms	47180 KB	Output is correct
10	Correct	29 ms	47608 KB	Output is correct
11	Correct	28 ms	48052 KB	Output is correct
12	Correct	28 ms	48076 KB	Output is correct
13	Correct	26 ms	47224 KB	Output is correct
14	Correct	32 ms	48072 KB	Output is correct
15	Correct	26 ms	47204 KB	Output is correct
16	Correct	35 ms	48136 KB	Output is correct
17	Correct	25 ms	47180 KB	Output is correct
18	Correct	29 ms	47948 KB	Output is correct
19	Correct	26 ms	47596 KB	Output is correct
20	Correct	32 ms	47800 KB	Output is correct
21	Correct	26 ms	47820 KB	Output is correct
22	Correct	28 ms	47600 KB	Output is correct
23	Correct	35 ms	48068 KB	Output is correct
24	Correct	27 ms	47564 KB	Output is correct
25	Correct	34 ms	48204 KB	Output is correct
26	Correct	33 ms	48144 KB	Output is correct
27	Correct	31 ms	48060 KB	Output is correct
28	Correct	31 ms	48168 KB	Output is correct
29	Correct	29 ms	48004 KB	Output is correct
30	Correct	30 ms	48124 KB	Output is correct
31	Correct	34 ms	48212 KB	Output is correct
32	Correct	31 ms	48224 KB	Output is correct
33	Correct	33 ms	48204 KB	Output is correct
34	Correct	38 ms	48228 KB	Output is correct
35	Correct	27 ms	47724 KB	Output is correct
36	Correct	30 ms	47704 KB	Output is correct
37	Correct	28 ms	47756 KB	Output is correct
38	Correct	26 ms	47584 KB	Output is correct
39	Correct	27 ms	47568 KB	Output is correct
40	Correct	37 ms	48460 KB	Output is correct
41	Correct	27 ms	47456 KB	Output is correct
42	Correct	37 ms	48412 KB	Output is correct
43	Correct	34 ms	48536 KB	Output is correct

Subtask #3

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	47564 KB	Output is correct
2	Correct	22 ms	47236 KB	Output is correct
3	Correct	27 ms	47152 KB	Output is correct
4	Correct	24 ms	47288 KB	Output is correct
5	Correct	25 ms	47180 KB	Output is correct
6	Incorrect	27 ms	47212 KB	Output isn't correct
7	Halted	0 ms	0 KB	-

Subtask #4

0 / 38.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	47288 KB	Output is correct
2	Correct	24 ms	47204 KB	Output is correct
3	Correct	31 ms	48004 KB	Output is correct
4	Correct	30 ms	47956 KB	Output is correct
5	Correct	32 ms	47948 KB	Output is correct
6	Correct	30 ms	47948 KB	Output is correct
7	Correct	29 ms	48076 KB	Output is correct
8	Correct	28 ms	47556 KB	Output is correct
9	Correct	25 ms	47180 KB	Output is correct
10	Correct	29 ms	47608 KB	Output is correct
11	Correct	28 ms	48052 KB	Output is correct
12	Correct	28 ms	48076 KB	Output is correct
13	Correct	26 ms	47224 KB	Output is correct
14	Correct	32 ms	48072 KB	Output is correct
15	Correct	26 ms	47204 KB	Output is correct
16	Correct	35 ms	48136 KB	Output is correct
17	Correct	25 ms	47180 KB	Output is correct
18	Correct	29 ms	47948 KB	Output is correct
19	Correct	26 ms	47596 KB	Output is correct
20	Correct	32 ms	47800 KB	Output is correct
21	Correct	26 ms	47820 KB	Output is correct
22	Correct	28 ms	47600 KB	Output is correct
23	Correct	35 ms	48068 KB	Output is correct
24	Correct	27 ms	47564 KB	Output is correct
25	Correct	34 ms	48204 KB	Output is correct
26	Correct	33 ms	48144 KB	Output is correct
27	Correct	31 ms	48060 KB	Output is correct
28	Correct	31 ms	48168 KB	Output is correct
29	Correct	29 ms	48004 KB	Output is correct
30	Correct	30 ms	48124 KB	Output is correct
31	Correct	34 ms	48212 KB	Output is correct
32	Correct	31 ms	48224 KB	Output is correct
33	Correct	33 ms	48204 KB	Output is correct
34	Correct	38 ms	48228 KB	Output is correct
35	Correct	27 ms	47724 KB	Output is correct
36	Correct	30 ms	47704 KB	Output is correct
37	Correct	28 ms	47756 KB	Output is correct
38	Correct	26 ms	47584 KB	Output is correct
39	Correct	27 ms	47568 KB	Output is correct
40	Correct	37 ms	48460 KB	Output is correct
41	Correct	27 ms	47456 KB	Output is correct
42	Correct	37 ms	48412 KB	Output is correct
43	Correct	34 ms	48536 KB	Output is correct
44	Incorrect	41 ms	49468 KB	Output isn't correct
45	Halted	0 ms	0 KB	-

Subtask #5

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	47288 KB	Output is correct
2	Correct	24 ms	47204 KB	Output is correct
3	Correct	31 ms	48004 KB	Output is correct
4	Correct	30 ms	47956 KB	Output is correct
5	Correct	32 ms	47948 KB	Output is correct
6	Correct	30 ms	47948 KB	Output is correct
7	Correct	29 ms	48076 KB	Output is correct
8	Correct	28 ms	47556 KB	Output is correct
9	Correct	25 ms	47180 KB	Output is correct
10	Correct	29 ms	47608 KB	Output is correct
11	Correct	28 ms	48052 KB	Output is correct
12	Correct	28 ms	48076 KB	Output is correct
13	Correct	26 ms	47224 KB	Output is correct
14	Correct	32 ms	48072 KB	Output is correct
15	Correct	26 ms	47204 KB	Output is correct
16	Correct	35 ms	48136 KB	Output is correct
17	Correct	25 ms	47180 KB	Output is correct
18	Correct	29 ms	47948 KB	Output is correct
19	Correct	26 ms	47596 KB	Output is correct
20	Correct	32 ms	47800 KB	Output is correct
21	Correct	26 ms	47820 KB	Output is correct
22	Correct	28 ms	47600 KB	Output is correct
23	Correct	35 ms	48068 KB	Output is correct
24	Correct	27 ms	47564 KB	Output is correct
25	Correct	34 ms	48204 KB	Output is correct
26	Correct	33 ms	48144 KB	Output is correct
27	Correct	31 ms	48060 KB	Output is correct
28	Correct	31 ms	48168 KB	Output is correct
29	Correct	29 ms	48004 KB	Output is correct
30	Correct	30 ms	48124 KB	Output is correct
31	Correct	34 ms	48212 KB	Output is correct
32	Correct	31 ms	48224 KB	Output is correct
33	Correct	33 ms	48204 KB	Output is correct
34	Correct	38 ms	48228 KB	Output is correct
35	Correct	27 ms	47724 KB	Output is correct
36	Correct	30 ms	47704 KB	Output is correct
37	Correct	28 ms	47756 KB	Output is correct
38	Correct	26 ms	47584 KB	Output is correct
39	Correct	27 ms	47568 KB	Output is correct
40	Correct	37 ms	48460 KB	Output is correct
41	Correct	27 ms	47456 KB	Output is correct
42	Correct	37 ms	48412 KB	Output is correct
43	Correct	34 ms	48536 KB	Output is correct
44	Correct	28 ms	47180 KB	Output is correct
45	Correct	276 ms	64452 KB	Output is correct
46	Correct	138 ms	57448 KB	Output is correct
47	Correct	280 ms	64428 KB	Output is correct
48	Correct	278 ms	64500 KB	Output is correct
49	Correct	84 ms	55012 KB	Output is correct
50	Correct	293 ms	69116 KB	Output is correct
51	Correct	285 ms	64584 KB	Output is correct
52	Correct	85 ms	55104 KB	Output is correct
53	Correct	86 ms	55128 KB	Output is correct
54	Correct	41 ms	50400 KB	Output is correct
55	Correct	314 ms	69188 KB	Output is correct
56	Correct	62 ms	52692 KB	Output is correct
57	Correct	85 ms	55000 KB	Output is correct
58	Incorrect	98 ms	57436 KB	Output isn't correct
59	Halted	0 ms	0 KB	-