Submission #478054

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
478054	2021-10-05T12:35:10 Z	Sohsoh84	Political Development (BOI17_politicaldevelopment)	C++17	16 / 100	333 ms	71612 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();
		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	24 ms	47184 KB	Output is correct
2	Correct	24 ms	47304 KB	Output is correct
3	Correct	29 ms	48028 KB	Output is correct
4	Correct	30 ms	48072 KB	Output is correct
5	Correct	30 ms	48072 KB	Output is correct
6	Correct	33 ms	48080 KB	Output is correct
7	Correct	30 ms	48048 KB	Output is correct
8	Correct	26 ms	47548 KB	Output is correct
9	Correct	25 ms	47184 KB	Output is correct
10	Correct	29 ms	47512 KB	Output is correct

Subtask #2

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	24 ms	47184 KB	Output is correct
2	Correct	24 ms	47304 KB	Output is correct
3	Correct	29 ms	48028 KB	Output is correct
4	Correct	30 ms	48072 KB	Output is correct
5	Correct	30 ms	48072 KB	Output is correct
6	Correct	33 ms	48080 KB	Output is correct
7	Correct	30 ms	48048 KB	Output is correct
8	Correct	26 ms	47548 KB	Output is correct
9	Correct	25 ms	47184 KB	Output is correct
10	Correct	29 ms	47512 KB	Output is correct
11	Correct	31 ms	48104 KB	Output is correct
12	Correct	27 ms	48080 KB	Output is correct
13	Correct	25 ms	47256 KB	Output is correct
14	Correct	31 ms	48144 KB	Output is correct
15	Correct	25 ms	47228 KB	Output is correct
16	Correct	36 ms	48068 KB	Output is correct
17	Correct	24 ms	47196 KB	Output is correct
18	Correct	31 ms	48048 KB	Output is correct
19	Correct	27 ms	47560 KB	Output is correct
20	Correct	28 ms	47804 KB	Output is correct
21	Correct	27 ms	47820 KB	Output is correct
22	Correct	28 ms	47532 KB	Output is correct
23	Correct	30 ms	48208 KB	Output is correct
24	Correct	28 ms	47560 KB	Output is correct
25	Correct	32 ms	48208 KB	Output is correct
26	Correct	34 ms	48072 KB	Output is correct
27	Correct	28 ms	48104 KB	Output is correct
28	Correct	34 ms	48188 KB	Output is correct
29	Correct	29 ms	48044 KB	Output is correct
30	Correct	36 ms	48308 KB	Output is correct
31	Correct	32 ms	48232 KB	Output is correct
32	Correct	35 ms	48208 KB	Output is correct
33	Correct	29 ms	48284 KB	Output is correct
34	Correct	30 ms	48196 KB	Output is correct
35	Correct	27 ms	47760 KB	Output is correct
36	Correct	29 ms	47772 KB	Output is correct
37	Correct	27 ms	47696 KB	Output is correct
38	Correct	27 ms	47508 KB	Output is correct
39	Correct	25 ms	47600 KB	Output is correct
40	Correct	35 ms	48592 KB	Output is correct
41	Correct	30 ms	47576 KB	Output is correct
42	Correct	35 ms	48840 KB	Output is correct
43	Correct	37 ms	48756 KB	Output is correct

Subtask #3

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	24 ms	47548 KB	Output is correct
2	Correct	26 ms	47304 KB	Output is correct
3	Correct	27 ms	47224 KB	Output is correct
4	Correct	27 ms	47232 KB	Output is correct
5	Correct	27 ms	47288 KB	Output is correct
6	Incorrect	24 ms	47220 KB	Output isn't correct
7	Halted	0 ms	0 KB	-

Subtask #4

0 / 38.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	24 ms	47184 KB	Output is correct
2	Correct	24 ms	47304 KB	Output is correct
3	Correct	29 ms	48028 KB	Output is correct
4	Correct	30 ms	48072 KB	Output is correct
5	Correct	30 ms	48072 KB	Output is correct
6	Correct	33 ms	48080 KB	Output is correct
7	Correct	30 ms	48048 KB	Output is correct
8	Correct	26 ms	47548 KB	Output is correct
9	Correct	25 ms	47184 KB	Output is correct
10	Correct	29 ms	47512 KB	Output is correct
11	Correct	31 ms	48104 KB	Output is correct
12	Correct	27 ms	48080 KB	Output is correct
13	Correct	25 ms	47256 KB	Output is correct
14	Correct	31 ms	48144 KB	Output is correct
15	Correct	25 ms	47228 KB	Output is correct
16	Correct	36 ms	48068 KB	Output is correct
17	Correct	24 ms	47196 KB	Output is correct
18	Correct	31 ms	48048 KB	Output is correct
19	Correct	27 ms	47560 KB	Output is correct
20	Correct	28 ms	47804 KB	Output is correct
21	Correct	27 ms	47820 KB	Output is correct
22	Correct	28 ms	47532 KB	Output is correct
23	Correct	30 ms	48208 KB	Output is correct
24	Correct	28 ms	47560 KB	Output is correct
25	Correct	32 ms	48208 KB	Output is correct
26	Correct	34 ms	48072 KB	Output is correct
27	Correct	28 ms	48104 KB	Output is correct
28	Correct	34 ms	48188 KB	Output is correct
29	Correct	29 ms	48044 KB	Output is correct
30	Correct	36 ms	48308 KB	Output is correct
31	Correct	32 ms	48232 KB	Output is correct
32	Correct	35 ms	48208 KB	Output is correct
33	Correct	29 ms	48284 KB	Output is correct
34	Correct	30 ms	48196 KB	Output is correct
35	Correct	27 ms	47760 KB	Output is correct
36	Correct	29 ms	47772 KB	Output is correct
37	Correct	27 ms	47696 KB	Output is correct
38	Correct	27 ms	47508 KB	Output is correct
39	Correct	25 ms	47600 KB	Output is correct
40	Correct	35 ms	48592 KB	Output is correct
41	Correct	30 ms	47576 KB	Output is correct
42	Correct	35 ms	48840 KB	Output is correct
43	Correct	37 ms	48756 KB	Output is correct
44	Incorrect	44 ms	49752 KB	Output isn't correct
45	Halted	0 ms	0 KB	-

Subtask #5

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	24 ms	47184 KB	Output is correct
2	Correct	24 ms	47304 KB	Output is correct
3	Correct	29 ms	48028 KB	Output is correct
4	Correct	30 ms	48072 KB	Output is correct
5	Correct	30 ms	48072 KB	Output is correct
6	Correct	33 ms	48080 KB	Output is correct
7	Correct	30 ms	48048 KB	Output is correct
8	Correct	26 ms	47548 KB	Output is correct
9	Correct	25 ms	47184 KB	Output is correct
10	Correct	29 ms	47512 KB	Output is correct
11	Correct	31 ms	48104 KB	Output is correct
12	Correct	27 ms	48080 KB	Output is correct
13	Correct	25 ms	47256 KB	Output is correct
14	Correct	31 ms	48144 KB	Output is correct
15	Correct	25 ms	47228 KB	Output is correct
16	Correct	36 ms	48068 KB	Output is correct
17	Correct	24 ms	47196 KB	Output is correct
18	Correct	31 ms	48048 KB	Output is correct
19	Correct	27 ms	47560 KB	Output is correct
20	Correct	28 ms	47804 KB	Output is correct
21	Correct	27 ms	47820 KB	Output is correct
22	Correct	28 ms	47532 KB	Output is correct
23	Correct	30 ms	48208 KB	Output is correct
24	Correct	28 ms	47560 KB	Output is correct
25	Correct	32 ms	48208 KB	Output is correct
26	Correct	34 ms	48072 KB	Output is correct
27	Correct	28 ms	48104 KB	Output is correct
28	Correct	34 ms	48188 KB	Output is correct
29	Correct	29 ms	48044 KB	Output is correct
30	Correct	36 ms	48308 KB	Output is correct
31	Correct	32 ms	48232 KB	Output is correct
32	Correct	35 ms	48208 KB	Output is correct
33	Correct	29 ms	48284 KB	Output is correct
34	Correct	30 ms	48196 KB	Output is correct
35	Correct	27 ms	47760 KB	Output is correct
36	Correct	29 ms	47772 KB	Output is correct
37	Correct	27 ms	47696 KB	Output is correct
38	Correct	27 ms	47508 KB	Output is correct
39	Correct	25 ms	47600 KB	Output is correct
40	Correct	35 ms	48592 KB	Output is correct
41	Correct	30 ms	47576 KB	Output is correct
42	Correct	35 ms	48840 KB	Output is correct
43	Correct	37 ms	48756 KB	Output is correct
44	Correct	29 ms	47208 KB	Output is correct
45	Correct	333 ms	66248 KB	Output is correct
46	Correct	129 ms	58380 KB	Output is correct
47	Correct	292 ms	66340 KB	Output is correct
48	Correct	292 ms	66304 KB	Output is correct
49	Correct	84 ms	55764 KB	Output is correct
50	Correct	269 ms	71612 KB	Output is correct
51	Correct	288 ms	66284 KB	Output is correct
52	Correct	85 ms	55752 KB	Output is correct
53	Correct	83 ms	55752 KB	Output is correct
54	Correct	42 ms	50388 KB	Output is correct
55	Correct	306 ms	71552 KB	Output is correct
56	Correct	61 ms	53072 KB	Output is correct
57	Correct	88 ms	55768 KB	Output is correct
58	Incorrect	99 ms	58472 KB	Output isn't correct
59	Halted	0 ms	0 KB	-