oj.uz

Submission #469629

# Submission time Handle Problem Language Result Execution time Memory
469629 2021-09-01T13:36:47 Z wind_reaper Political Development (BOI17_politicaldevelopment) C++17
100 / 100
 561 ms 28896 KB 
#include <bits/stdc++.h>
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
*/

using namespace std;
// using namespace __gnu_pbds;
using namespace chrono;

// mt19937 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
/*
template <class T> using ordered_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>;
*/

//***************** CONSTANTS *****************

const int MXN = 50000;

//***************** GLOBAL VARIABLES *****************

set<int> g[MXN];
int D[MXN];

//***************** AUXILIARY STRUCTS *****************



//***************** MAIN BODY *****************

void solve(){
	int N, K;
	cin >> N >> K;

	priority_queue<array<int, 2>> pq;

	for(int i = 0; i < N; i++){
		cin >> D[i];
		for(int _ = 0; _ < D[i]; _++){
			int x;
			cin >> x;
			g[i].insert(x);
		}
		pq.push({-D[i], i});
	}

	int ans = 1;

	while(!pq.empty()){
		auto [deg, u] = pq.top();
		pq.pop();
		deg *= -1;

		if(deg != D[u])
			continue;

		vector<int> t(D[u]);
		int ptr = 0;
		for(int v : g[u]) t[ptr++] = v;

		for(int mask = 1; mask < (1 << deg); mask++){
			vector<int> vec;
			for(int i = 0; i < deg; i++)
				if((mask >> i) & 1)
					vec.push_back(t[i]);

			int k = vec.size();
			bool ok = true;

			for(int i = 0; i < k && ok; i++)
				for(int j = i + 1; j < k && ok; j++)
					if(g[vec[i]].find(vec[j]) == g[vec[i]].end()){
						ok = false;
						break;
					}

			if(ok) ans = max(ans, k + 1);
		}

		for(int v : g[u]){
			g[v].erase(u);
			D[v]--;
			pq.push({-D[v], v});
		}
	}

	cout << ans << '\n';
}

//***************** *****************

int32_t main(){
	ios_base::sync_with_stdio(NULL);
	cin.tie(NULL);

	#ifdef LOCAL
		auto begin = high_resolution_clock::now();
	#endif

	int tc = 1;
	// cin >> tc; 
	for (int t = 0; t < tc; t++)
		solve();

	#ifdef LOCAL 
		auto end = high_resolution_clock::now();
		cout << fixed << setprecision(4);
		cout << "Execution Time: " << duration_cast<duration<double>>(end - begin).count() << "seconds" << endl;
	#endif

	return 0;
}

/*
If code gives a WA, check for the following : 
1. I/O format

2. Are you clearing all global variables in between tests if multitests are a thing

3. Can you definitively prove the logic

4. If the code gives an inexplicable TLE, and you are sure you have the best possible complexity,
use faster io
*/

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 6 ms 3148 KB Output is correct
4 Correct 7 ms 3148 KB Output is correct
5 Correct 6 ms 3148 KB Output is correct
6 Correct 6 ms 3148 KB Output is correct
7 Correct 6 ms 3148 KB Output is correct
8 Correct 3 ms 2764 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 3 ms 2764 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 6 ms 3148 KB Output is correct
4 Correct 7 ms 3148 KB Output is correct
5 Correct 6 ms 3148 KB Output is correct
6 Correct 6 ms 3148 KB Output is correct
7 Correct 6 ms 3148 KB Output is correct
8 Correct 3 ms 2764 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 3 ms 2764 KB Output is correct
11 Correct 6 ms 3148 KB Output is correct
12 Correct 7 ms 3260 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 6 ms 3188 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 6 ms 3260 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 7 ms 3264 KB Output is correct
19 Correct 3 ms 2764 KB Output is correct
20 Correct 4 ms 2932 KB Output is correct
21 Correct 4 ms 2892 KB Output is correct
22 Correct 2 ms 2764 KB Output is correct
23 Correct 8 ms 3320 KB Output is correct
24 Correct 3 ms 2764 KB Output is correct
25 Correct 8 ms 3276 KB Output is correct
26 Correct 7 ms 3228 KB Output is correct
27 Correct 5 ms 3148 KB Output is correct
28 Correct 7 ms 3276 KB Output is correct
29 Correct 6 ms 3148 KB Output is correct
30 Correct 8 ms 3320 KB Output is correct
31 Correct 7 ms 3328 KB Output is correct
32 Correct 8 ms 3436 KB Output is correct
33 Correct 10 ms 3404 KB Output is correct
34 Correct 9 ms 3412 KB Output is correct
35 Correct 5 ms 2940 KB Output is correct
36 Correct 5 ms 2932 KB Output is correct
37 Correct 5 ms 3020 KB Output is correct
38 Correct 4 ms 2892 KB Output is correct
39 Correct 5 ms 2892 KB Output is correct
40 Correct 11 ms 3792 KB Output is correct
41 Correct 4 ms 2892 KB Output is correct
42 Correct 11 ms 3832 KB Output is correct
43 Correct 10 ms 3832 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2764 KB Output is correct
2 Correct 2 ms 2664 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2760 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 495 ms 28600 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 491 ms 28636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 503 ms 28656 KB Output is correct
16 Correct 508 ms 28896 KB Output is correct
17 Correct 478 ms 28584 KB Output is correct
18 Correct 561 ms 28568 KB Output is correct

Subtask #4
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 6 ms 3148 KB Output is correct
4 Correct 7 ms 3148 KB Output is correct
5 Correct 6 ms 3148 KB Output is correct
6 Correct 6 ms 3148 KB Output is correct
7 Correct 6 ms 3148 KB Output is correct
8 Correct 3 ms 2764 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 3 ms 2764 KB Output is correct
11 Correct 6 ms 3148 KB Output is correct
12 Correct 7 ms 3260 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 6 ms 3188 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 6 ms 3260 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 7 ms 3264 KB Output is correct
19 Correct 3 ms 2764 KB Output is correct
20 Correct 4 ms 2932 KB Output is correct
21 Correct 4 ms 2892 KB Output is correct
22 Correct 2 ms 2764 KB Output is correct
23 Correct 8 ms 3320 KB Output is correct
24 Correct 3 ms 2764 KB Output is correct
25 Correct 8 ms 3276 KB Output is correct
26 Correct 7 ms 3228 KB Output is correct
27 Correct 5 ms 3148 KB Output is correct
28 Correct 7 ms 3276 KB Output is correct
29 Correct 6 ms 3148 KB Output is correct
30 Correct 8 ms 3320 KB Output is correct
31 Correct 7 ms 3328 KB Output is correct
32 Correct 8 ms 3436 KB Output is correct
33 Correct 10 ms 3404 KB Output is correct
34 Correct 9 ms 3412 KB Output is correct
35 Correct 5 ms 2940 KB Output is correct
36 Correct 5 ms 2932 KB Output is correct
37 Correct 5 ms 3020 KB Output is correct
38 Correct 4 ms 2892 KB Output is correct
39 Correct 5 ms 2892 KB Output is correct
40 Correct 11 ms 3792 KB Output is correct
41 Correct 4 ms 2892 KB Output is correct
42 Correct 11 ms 3832 KB Output is correct
43 Correct 10 ms 3832 KB Output is correct
44 Correct 76 ms 4796 KB Output is correct
45 Correct 2 ms 2636 KB Output is correct
46 Correct 14 ms 3788 KB Output is correct
47 Correct 27 ms 5068 KB Output is correct
48 Correct 14 ms 3784 KB Output is correct
49 Correct 27 ms 5068 KB Output is correct
50 Correct 28 ms 5028 KB Output is correct
51 Correct 248 ms 7388 KB Output is correct
52 Correct 6 ms 3148 KB Output is correct
53 Correct 492 ms 7864 KB Output is correct
54 Correct 544 ms 7920 KB Output is correct
55 Correct 6 ms 3148 KB Output is correct
56 Correct 6 ms 3148 KB Output is correct
57 Correct 2 ms 2764 KB Output is correct
58 Correct 490 ms 7872 KB Output is correct
59 Correct 11 ms 3660 KB Output is correct
60 Correct 8 ms 3188 KB Output is correct
61 Correct 11 ms 3780 KB Output is correct
62 Correct 11 ms 3772 KB Output is correct
63 Correct 75 ms 4692 KB Output is correct
64 Correct 41 ms 4496 KB Output is correct
65 Correct 9 ms 3660 KB Output is correct
66 Correct 11 ms 3660 KB Output is correct
67 Correct 59 ms 5468 KB Output is correct
68 Correct 41 ms 4428 KB Output is correct
69 Correct 10 ms 3704 KB Output is correct
70 Correct 24 ms 4704 KB Output is correct
71 Correct 57 ms 5316 KB Output is correct
72 Correct 49 ms 5380 KB Output is correct
73 Correct 6 ms 3148 KB Output is correct
74 Correct 24 ms 4688 KB Output is correct
75 Correct 48 ms 5404 KB Output is correct
76 Correct 15 ms 4256 KB Output is correct
77 Correct 93 ms 5956 KB Output is correct
78 Correct 8 ms 3148 KB Output is correct
79 Correct 48 ms 4244 KB Output is correct
80 Correct 20 ms 4116 KB Output is correct
81 Correct 94 ms 5956 KB Output is correct
82 Correct 4 ms 2892 KB Output is correct
83 Correct 51 ms 4240 KB Output is correct
84 Correct 45 ms 5304 KB Output is correct
85 Correct 4 ms 2936 KB Output is correct
86 Correct 44 ms 5324 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 6 ms 3148 KB Output is correct
4 Correct 7 ms 3148 KB Output is correct
5 Correct 6 ms 3148 KB Output is correct
6 Correct 6 ms 3148 KB Output is correct
7 Correct 6 ms 3148 KB Output is correct
8 Correct 3 ms 2764 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 3 ms 2764 KB Output is correct
11 Correct 6 ms 3148 KB Output is correct
12 Correct 7 ms 3260 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 6 ms 3188 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 6 ms 3260 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 7 ms 3264 KB Output is correct
19 Correct 3 ms 2764 KB Output is correct
20 Correct 4 ms 2932 KB Output is correct
21 Correct 4 ms 2892 KB Output is correct
22 Correct 2 ms 2764 KB Output is correct
23 Correct 8 ms 3320 KB Output is correct
24 Correct 3 ms 2764 KB Output is correct
25 Correct 8 ms 3276 KB Output is correct
26 Correct 7 ms 3228 KB Output is correct
27 Correct 5 ms 3148 KB Output is correct
28 Correct 7 ms 3276 KB Output is correct
29 Correct 6 ms 3148 KB Output is correct
30 Correct 8 ms 3320 KB Output is correct
31 Correct 7 ms 3328 KB Output is correct
32 Correct 8 ms 3436 KB Output is correct
33 Correct 10 ms 3404 KB Output is correct
34 Correct 9 ms 3412 KB Output is correct
35 Correct 5 ms 2940 KB Output is correct
36 Correct 5 ms 2932 KB Output is correct
37 Correct 5 ms 3020 KB Output is correct
38 Correct 4 ms 2892 KB Output is correct
39 Correct 5 ms 2892 KB Output is correct
40 Correct 11 ms 3792 KB Output is correct
41 Correct 4 ms 2892 KB Output is correct
42 Correct 11 ms 3832 KB Output is correct
43 Correct 10 ms 3832 KB Output is correct
44 Correct 2 ms 2636 KB Output is correct
45 Correct 215 ms 20832 KB Output is correct
46 Correct 109 ms 11280 KB Output is correct
47 Correct 199 ms 20792 KB Output is correct
48 Correct 213 ms 20680 KB Output is correct
49 Correct 68 ms 8540 KB Output is correct
50 Correct 273 ms 25928 KB Output is correct
51 Correct 201 ms 20880 KB Output is correct
52 Correct 52 ms 8592 KB Output is correct
53 Correct 54 ms 8620 KB Output is correct
54 Correct 12 ms 3536 KB Output is correct
55 Correct 269 ms 25984 KB Output is correct
56 Correct 33 ms 5980 KB Output is correct
57 Correct 52 ms 8532 KB Output is correct
58 Correct 72 ms 11164 KB Output is correct
59 Correct 30 ms 5896 KB Output is correct
60 Correct 35 ms 5984 KB Output is correct
61 Correct 71 ms 11144 KB Output is correct
62 Correct 49 ms 8612 KB Output is correct
63 Correct 98 ms 13116 KB Output is correct
64 Correct 29 ms 5880 KB Output is correct
65 Correct 132 ms 15808 KB Output is correct
66 Correct 50 ms 8512 KB Output is correct
67 Correct 102 ms 13116 KB Output is correct
68 Correct 127 ms 15040 KB Output is correct
69 Correct 131 ms 15792 KB Output is correct
70 Correct 56 ms 8588 KB Output is correct
71 Correct 138 ms 15164 KB Output is correct
72 Correct 106 ms 12692 KB Output is correct
73 Correct 151 ms 17432 KB Output is correct
74 Correct 47 ms 8500 KB Output is correct
75 Correct 52 ms 8428 KB Output is correct
76 Correct 125 ms 12764 KB Output is correct
77 Correct 157 ms 17516 KB Output is correct
78 Correct 69 ms 9956 KB Output is correct
79 Correct 49 ms 8392 KB Output is correct
80 Correct 24 ms 5564 KB Output is correct
81 Correct 71 ms 10048 KB Output is correct
82 Correct 115 ms 14392 KB Output is correct
83 Correct 25 ms 5452 KB Output is correct
84 Correct 109 ms 14424 KB Output is correct