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Submission #864711

# Submission time Handle Problem Language Result Execution time Memory
864711 2023-10-23T13:29:12 Z iskhakkutbilim Political Development (BOI17_politicaldevelopment) C++17
100 / 100
 255 ms 314000 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ff first
#define ss second
#define all(a) a.begin(), a.end()
const int N = 50000;
int n, k;
int deg[N];
vector<int> g[N];
bitset<N> yes[N];
 
bool can(vector<int>&v){
	for(int i = 0;i < v.size(); i++){
		for(int j = i +1;j < v.size(); j++){
			if(yes[v[i]][v[j]] == 0) return false;
		}
	}
	return true;
}
 
 
main(){
   ios::sync_with_stdio(0);
   cin.tie(0); cout.tie(0);
	cin >> n >> k;
	priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int> > > pq;
	for(int i = 0;i < n; i++){
		int sz; cin >> sz;
		deg[i] = sz;
		pq.push({deg[i], i});
		yes[i][i] = 1;
		for(int j = 0;j < sz; j++){
			int x; cin >> x;
			yes[i][x] = 1;
			g[i].push_back(x);
		}
	}	
	int ans = 1;
	vector<int> used(n, 0);
	while(true){
		while(!pq.empty() && used[pq.top().ss]) pq.pop();
		if(pq.empty()) break;
		int v = pq.top().ss;
		pq.pop();
		used[v] = 1;
		deg[v] = 0;
		vector<int> vert = {v};
		for(int to : g[v]){
			if(used[to]) continue;
			deg[to]--;
			pq.push({deg[to], to});
			vert.push_back(to);
		}
		bool adj[11][11] = {};
		for(int i = 0;i < vert.size(); i++){
			adj[i][i] = 1;
			for(int j = 0; j < vert.size(); j++){
				if(i != j && yes[vert[i]][vert[j]]){
					adj[i][j] = 1;
				}
			}
		}
		for(int mask = 1; mask < (1<<vert.size()); mask++){
			int ok = 1, cnt = 0;
			for(int i = 0;i < vert.size() && ok; i++){
				if(!(mask & (1<<i))) continue;
				cnt++;
				for(int j = 0;j < vert.size(); j++){
					if(mask & (1<<j)){
						if(yes[vert[i]][vert[j]] == 0){
							ok = 0;
							break;
						}
					}
				}
			}
			if(ok) ans = max(ans, cnt);
		}
	}
	cout << ans;
	return 0;
}

Compilation message

politicaldevelopment.cpp: In function 'bool can(std::vector<int>&)':
politicaldevelopment.cpp:14:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for(int i = 0;i < v.size(); i++){
      |                ~~^~~~~~~~~~
politicaldevelopment.cpp:15:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |   for(int j = i +1;j < v.size(); j++){
      |                    ~~^~~~~~~~~~
politicaldevelopment.cpp: At global scope:
politicaldevelopment.cpp:23:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   23 | main(){
      | ^~~~
politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:56:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |   for(int i = 0;i < vert.size(); i++){
      |                 ~~^~~~~~~~~~~~~
politicaldevelopment.cpp:58:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |    for(int j = 0; j < vert.size(); j++){
      |                   ~~^~~~~~~~~~~~~
politicaldevelopment.cpp:66:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |    for(int i = 0;i < vert.size() && ok; i++){
      |                  ~~^~~~~~~~~~~~~
politicaldevelopment.cpp:69:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |     for(int j = 0;j < vert.size(); j++){
      |                   ~~^~~~~~~~~~~~~
politicaldevelopment.cpp:55:8: warning: variable 'adj' set but not used [-Wunused-but-set-variable]
   55 |   bool adj[11][11] = {};
      |        ^~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 6 ms 32604 KB Output is correct
4 Correct 6 ms 32600 KB Output is correct
5 Correct 6 ms 32604 KB Output is correct
6 Correct 6 ms 32824 KB Output is correct
7 Correct 6 ms 32664 KB Output is correct
8 Correct 7 ms 32572 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 4 ms 32604 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 6 ms 32604 KB Output is correct
4 Correct 6 ms 32600 KB Output is correct
5 Correct 6 ms 32604 KB Output is correct
6 Correct 6 ms 32824 KB Output is correct
7 Correct 6 ms 32664 KB Output is correct
8 Correct 7 ms 32572 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 4 ms 32604 KB Output is correct
11 Correct 6 ms 32604 KB Output is correct
12 Correct 6 ms 32604 KB Output is correct
13 Correct 1 ms 1628 KB Output is correct
14 Correct 6 ms 32812 KB Output is correct
15 Correct 1 ms 1628 KB Output is correct
16 Correct 6 ms 32800 KB Output is correct
17 Correct 1 ms 1628 KB Output is correct
18 Correct 6 ms 32604 KB Output is correct
19 Correct 4 ms 32588 KB Output is correct
20 Correct 6 ms 32600 KB Output is correct
21 Correct 5 ms 32604 KB Output is correct
22 Correct 4 ms 32604 KB Output is correct
23 Correct 7 ms 32556 KB Output is correct
24 Correct 4 ms 32604 KB Output is correct
25 Correct 7 ms 32604 KB Output is correct
26 Correct 8 ms 32604 KB Output is correct
27 Correct 6 ms 32604 KB Output is correct
28 Correct 7 ms 32684 KB Output is correct
29 Correct 6 ms 32604 KB Output is correct
30 Correct 7 ms 32604 KB Output is correct
31 Correct 9 ms 32600 KB Output is correct
32 Correct 7 ms 32604 KB Output is correct
33 Correct 8 ms 32604 KB Output is correct
34 Correct 7 ms 32636 KB Output is correct
35 Correct 4 ms 18268 KB Output is correct
36 Correct 4 ms 18232 KB Output is correct
37 Correct 4 ms 18268 KB Output is correct
38 Correct 2 ms 9820 KB Output is correct
39 Correct 2 ms 9816 KB Output is correct
40 Correct 9 ms 32856 KB Output is correct
41 Correct 2 ms 9820 KB Output is correct
42 Correct 8 ms 32860 KB Output is correct
43 Correct 9 ms 32860 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 32604 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 1 ms 1624 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct
6 Correct 1 ms 1812 KB Output is correct
7 Correct 1 ms 1628 KB Output is correct
8 Correct 1 ms 1628 KB Output is correct
9 Correct 1 ms 1660 KB Output is correct
10 Correct 1 ms 1628 KB Output is correct
11 Correct 242 ms 313852 KB Output is correct
12 Correct 1 ms 1628 KB Output is correct
13 Correct 255 ms 313904 KB Output is correct
14 Correct 1 ms 1628 KB Output is correct
15 Correct 240 ms 314000 KB Output is correct
16 Correct 241 ms 313972 KB Output is correct
17 Correct 251 ms 313796 KB Output is correct
18 Correct 241 ms 313796 KB Output is correct

Subtask #4
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 6 ms 32604 KB Output is correct
4 Correct 6 ms 32600 KB Output is correct
5 Correct 6 ms 32604 KB Output is correct
6 Correct 6 ms 32824 KB Output is correct
7 Correct 6 ms 32664 KB Output is correct
8 Correct 7 ms 32572 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 4 ms 32604 KB Output is correct
11 Correct 6 ms 32604 KB Output is correct
12 Correct 6 ms 32604 KB Output is correct
13 Correct 1 ms 1628 KB Output is correct
14 Correct 6 ms 32812 KB Output is correct
15 Correct 1 ms 1628 KB Output is correct
16 Correct 6 ms 32800 KB Output is correct
17 Correct 1 ms 1628 KB Output is correct
18 Correct 6 ms 32604 KB Output is correct
19 Correct 4 ms 32588 KB Output is correct
20 Correct 6 ms 32600 KB Output is correct
21 Correct 5 ms 32604 KB Output is correct
22 Correct 4 ms 32604 KB Output is correct
23 Correct 7 ms 32556 KB Output is correct
24 Correct 4 ms 32604 KB Output is correct
25 Correct 7 ms 32604 KB Output is correct
26 Correct 8 ms 32604 KB Output is correct
27 Correct 6 ms 32604 KB Output is correct
28 Correct 7 ms 32684 KB Output is correct
29 Correct 6 ms 32604 KB Output is correct
30 Correct 7 ms 32604 KB Output is correct
31 Correct 9 ms 32600 KB Output is correct
32 Correct 7 ms 32604 KB Output is correct
33 Correct 8 ms 32604 KB Output is correct
34 Correct 7 ms 32636 KB Output is correct
35 Correct 4 ms 18268 KB Output is correct
36 Correct 4 ms 18232 KB Output is correct
37 Correct 4 ms 18268 KB Output is correct
38 Correct 2 ms 9820 KB Output is correct
39 Correct 2 ms 9816 KB Output is correct
40 Correct 9 ms 32856 KB Output is correct
41 Correct 2 ms 9820 KB Output is correct
42 Correct 8 ms 32860 KB Output is correct
43 Correct 9 ms 32860 KB Output is correct
44 Correct 90 ms 32704 KB Output is correct
45 Correct 1 ms 1624 KB Output is correct
46 Correct 9 ms 32860 KB Output is correct
47 Correct 14 ms 33052 KB Output is correct
48 Correct 9 ms 32860 KB Output is correct
49 Correct 14 ms 33220 KB Output is correct
50 Correct 14 ms 33116 KB Output is correct
51 Correct 64 ms 33600 KB Output is correct
52 Correct 6 ms 32604 KB Output is correct
53 Correct 144 ms 33744 KB Output is correct
54 Correct 140 ms 33684 KB Output is correct
55 Correct 7 ms 32600 KB Output is correct
56 Correct 6 ms 32604 KB Output is correct
57 Correct 4 ms 32600 KB Output is correct
58 Correct 144 ms 33876 KB Output is correct
59 Correct 8 ms 32604 KB Output is correct
60 Correct 6 ms 32832 KB Output is correct
61 Correct 8 ms 32604 KB Output is correct
62 Correct 9 ms 32604 KB Output is correct
63 Correct 91 ms 32700 KB Output is correct
64 Correct 46 ms 32860 KB Output is correct
65 Correct 8 ms 32856 KB Output is correct
66 Correct 8 ms 32600 KB Output is correct
67 Correct 41 ms 33116 KB Output is correct
68 Correct 43 ms 32856 KB Output is correct
69 Correct 9 ms 32860 KB Output is correct
70 Correct 13 ms 33012 KB Output is correct
71 Correct 39 ms 33116 KB Output is correct
72 Correct 26 ms 33116 KB Output is correct
73 Correct 7 ms 32604 KB Output is correct
74 Correct 14 ms 33028 KB Output is correct
75 Correct 26 ms 33092 KB Output is correct
76 Correct 10 ms 32860 KB Output is correct
77 Correct 31 ms 33240 KB Output is correct
78 Correct 6 ms 32604 KB Output is correct
79 Correct 15 ms 18608 KB Output is correct
80 Correct 10 ms 32860 KB Output is correct
81 Correct 31 ms 33284 KB Output is correct
82 Correct 2 ms 9820 KB Output is correct
83 Correct 15 ms 18524 KB Output is correct
84 Correct 18 ms 33236 KB Output is correct
85 Correct 3 ms 10072 KB Output is correct
86 Correct 19 ms 33240 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 6 ms 32604 KB Output is correct
4 Correct 6 ms 32600 KB Output is correct
5 Correct 6 ms 32604 KB Output is correct
6 Correct 6 ms 32824 KB Output is correct
7 Correct 6 ms 32664 KB Output is correct
8 Correct 7 ms 32572 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 4 ms 32604 KB Output is correct
11 Correct 6 ms 32604 KB Output is correct
12 Correct 6 ms 32604 KB Output is correct
13 Correct 1 ms 1628 KB Output is correct
14 Correct 6 ms 32812 KB Output is correct
15 Correct 1 ms 1628 KB Output is correct
16 Correct 6 ms 32800 KB Output is correct
17 Correct 1 ms 1628 KB Output is correct
18 Correct 6 ms 32604 KB Output is correct
19 Correct 4 ms 32588 KB Output is correct
20 Correct 6 ms 32600 KB Output is correct
21 Correct 5 ms 32604 KB Output is correct
22 Correct 4 ms 32604 KB Output is correct
23 Correct 7 ms 32556 KB Output is correct
24 Correct 4 ms 32604 KB Output is correct
25 Correct 7 ms 32604 KB Output is correct
26 Correct 8 ms 32604 KB Output is correct
27 Correct 6 ms 32604 KB Output is correct
28 Correct 7 ms 32684 KB Output is correct
29 Correct 6 ms 32604 KB Output is correct
30 Correct 7 ms 32604 KB Output is correct
31 Correct 9 ms 32600 KB Output is correct
32 Correct 7 ms 32604 KB Output is correct
33 Correct 8 ms 32604 KB Output is correct
34 Correct 7 ms 32636 KB Output is correct
35 Correct 4 ms 18268 KB Output is correct
36 Correct 4 ms 18232 KB Output is correct
37 Correct 4 ms 18268 KB Output is correct
38 Correct 2 ms 9820 KB Output is correct
39 Correct 2 ms 9816 KB Output is correct
40 Correct 9 ms 32856 KB Output is correct
41 Correct 2 ms 9820 KB Output is correct
42 Correct 8 ms 32860 KB Output is correct
43 Correct 9 ms 32860 KB Output is correct
44 Correct 1 ms 1628 KB Output is correct
45 Correct 126 ms 312260 KB Output is correct
46 Correct 77 ms 310180 KB Output is correct
47 Correct 138 ms 312260 KB Output is correct
48 Correct 134 ms 312260 KB Output is correct
49 Correct 55 ms 310172 KB Output is correct
50 Correct 124 ms 312468 KB Output is correct
51 Correct 131 ms 312264 KB Output is correct
52 Correct 57 ms 310212 KB Output is correct
53 Correct 57 ms 309960 KB Output is correct
54 Correct 35 ms 308292 KB Output is correct
55 Correct 125 ms 312520 KB Output is correct
56 Correct 51 ms 309900 KB Output is correct
57 Correct 57 ms 309964 KB Output is correct
58 Correct 77 ms 310348 KB Output is correct
59 Correct 50 ms 310140 KB Output is correct
60 Correct 50 ms 309952 KB Output is correct
61 Correct 75 ms 309960 KB Output is correct
62 Correct 59 ms 309960 KB Output is correct
63 Correct 91 ms 310736 KB Output is correct
64 Correct 49 ms 309956 KB Output is correct
65 Correct 106 ms 311016 KB Output is correct
66 Correct 60 ms 309964 KB Output is correct
67 Correct 90 ms 310724 KB Output is correct
68 Correct 106 ms 310936 KB Output is correct
69 Correct 104 ms 310884 KB Output is correct
70 Correct 62 ms 309772 KB Output is correct
71 Correct 104 ms 310976 KB Output is correct
72 Correct 82 ms 310736 KB Output is correct
73 Correct 115 ms 311124 KB Output is correct
74 Correct 62 ms 309964 KB Output is correct
75 Correct 46 ms 157144 KB Output is correct
76 Correct 82 ms 310852 KB Output is correct
77 Correct 118 ms 311240 KB Output is correct
78 Correct 56 ms 157268 KB Output is correct
79 Correct 46 ms 157136 KB Output is correct
80 Correct 19 ms 80476 KB Output is correct
81 Correct 58 ms 157392 KB Output is correct
82 Correct 93 ms 310604 KB Output is correct
83 Correct 20 ms 80476 KB Output is correct
84 Correct 97 ms 310804 KB Output is correct