oj.uz

Submission #1042069

# Submission time Handle Problem Language Result Execution time Memory
1042069 2024-08-02T13:54:08 Z amine_aroua Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 149 ms 27584 KB 
#include "supertrees.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
vector<vector<int>> pp;
vector<vector<int>> adj;
int nn;
struct DSU
{
	vector<int> e;
	DSU(int _n)
	{
		e.assign(_n , -1);
	}	
	
	int get(int u )
	{
		return (e[u] < 0 ? u : e[u] = get(e[u]));
	}
	bool same(int u , int v)
	{
		return get(u) == get(v);
	}
	void unite(int u , int v)
	{
		u = get(u) , v = get(v);
		if(u == v)
			return;
		if(e[u] > e[v])
			swap(u , v);
		e[u]+=e[v];
		e[v] = u;
	}
};
bool check_conn()
{
	DSU dsu(nn);
	for(int i = 0 ; i < nn ;i++)
	{
		for(int j = 0 ; j < nn ; j++)
		{
			if(pp[i][j])
			{
				dsu.unite(i , j);
			}
		}
	}
	for(int i = 0 ; i < nn ; i++)
	{
		for(int j = 0 ; j <  nn; j++)
		{
			if(pp[i][j] == 0 && dsu.same(i , j))
			{
				return 0;
			}
		}
	}
	DSU maker(nn);
	for(int i = 0 ; i < nn ;i++)
	{
		for(int j = 0 ; j < nn ;j++)
		{
			if(pp[i][j] == 1)
			{
				maker.unite(i , j);
			}
		}
	}
	for(int i = 0 ; i < nn ; i++)
	{
		for(int j = 0 ; j < nn ; j++)
		{
          	if(pp[i][j] == 3)
              	return 0;
			if(pp[i][j] >= 2 && maker.same(i , j))
			{
				return 0;
			}
		}
	}
	vector<vector<int>> comp(nn);
	for(int i = 0 ; i < nn ; i++)
	{
		comp[dsu.get(i)].push_back(i);
	}
	for(auto c : comp)
	{
		vector<int> v;
		for(auto i : c)
		{
			int par = maker.get(i);
			if(i == par)
			{
				v.push_back(i);
				continue;
			}
			adj[par][i] = 1;
			adj[i][par] = 1;
		}
		if((int)v.size() == 1)
			continue;
		if((int)v.size() == 2)
		{
			return 0;
		}
		for(int i = 0 ; i < (int)v.size() ; i++)
		{
			adj[v[i]][v[(i + 1)%((int)v.size())]] = 1;
			adj[v[(i + 1)%((int)v.size())]][v[i]] = 1;
		}
	}
	build(adj);
	return 1;
}
int construct(std::vector<std::vector<int>> P) {
	
	pp = P;
	nn = (int)pp.size();
	adj.assign(nn , vector<int>(nn));
	return check_conn();
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 111 ms 27220 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 111 ms 27220 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 104 ms 27268 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1116 KB Output is correct
17 Correct 63 ms 17384 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 25 ms 7180 KB Output is correct
21 Correct 111 ms 27216 KB Output is correct
22 Correct 117 ms 27232 KB Output is correct
23 Correct 139 ms 27216 KB Output is correct
24 Correct 99 ms 27476 KB Output is correct
25 Correct 49 ms 17492 KB Output is correct
26 Correct 44 ms 17488 KB Output is correct
27 Correct 110 ms 27448 KB Output is correct
28 Correct 105 ms 27420 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 440 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 8 ms 1372 KB Output is correct
9 Correct 112 ms 27472 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 101 ms 27556 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 1116 KB Output is correct
17 Correct 67 ms 17580 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 25 ms 7240 KB Output is correct
22 Correct 109 ms 27584 KB Output is correct
23 Correct 116 ms 27472 KB Output is correct
24 Correct 117 ms 27412 KB Output is correct
25 Correct 46 ms 17720 KB Output is correct
26 Correct 46 ms 17492 KB Output is correct
27 Correct 103 ms 27504 KB Output is correct
28 Correct 117 ms 27472 KB Output is correct
29 Correct 60 ms 17700 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 428 KB Output is correct
4 Correct 29 ms 7216 KB Output is correct
5 Correct 110 ms 27308 KB Output is correct
6 Correct 142 ms 27360 KB Output is correct
7 Correct 115 ms 27260 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 28 ms 7252 KB Output is correct
10 Correct 107 ms 27216 KB Output is correct
11 Correct 106 ms 27216 KB Output is correct
12 Correct 109 ms 27220 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 26 ms 7348 KB Output is correct
17 Correct 106 ms 27464 KB Output is correct
18 Correct 106 ms 27216 KB Output is correct
19 Correct 149 ms 27220 KB Output is correct
20 Correct 139 ms 27404 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 111 ms 27220 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 104 ms 27268 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1116 KB Output is correct
17 Correct 63 ms 17384 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 25 ms 7180 KB Output is correct
21 Correct 111 ms 27216 KB Output is correct
22 Correct 117 ms 27232 KB Output is correct
23 Correct 139 ms 27216 KB Output is correct
24 Correct 99 ms 27476 KB Output is correct
25 Correct 49 ms 17492 KB Output is correct
26 Correct 44 ms 17488 KB Output is correct
27 Correct 110 ms 27448 KB Output is correct
28 Correct 105 ms 27420 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 440 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 8 ms 1372 KB Output is correct
37 Correct 112 ms 27472 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 4 ms 1372 KB Output is correct
41 Correct 101 ms 27556 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 2 ms 1116 KB Output is correct
45 Correct 67 ms 17580 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 25 ms 7240 KB Output is correct
50 Correct 109 ms 27584 KB Output is correct
51 Correct 116 ms 27472 KB Output is correct
52 Correct 117 ms 27412 KB Output is correct
53 Correct 46 ms 17720 KB Output is correct
54 Correct 46 ms 17492 KB Output is correct
55 Correct 103 ms 27504 KB Output is correct
56 Correct 117 ms 27472 KB Output is correct
57 Correct 60 ms 17700 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 2 ms 1116 KB Output is correct
61 Correct 53 ms 17372 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 28 ms 7364 KB Output is correct
66 Correct 47 ms 17488 KB Output is correct
67 Correct 45 ms 17488 KB Output is correct
68 Correct 48 ms 17500 KB Output is correct
69 Correct 49 ms 17488 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 111 ms 27220 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 104 ms 27268 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1116 KB Output is correct
17 Correct 63 ms 17384 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 25 ms 7180 KB Output is correct
21 Correct 111 ms 27216 KB Output is correct
22 Correct 117 ms 27232 KB Output is correct
23 Correct 139 ms 27216 KB Output is correct
24 Correct 99 ms 27476 KB Output is correct
25 Correct 49 ms 17492 KB Output is correct
26 Correct 44 ms 17488 KB Output is correct
27 Correct 110 ms 27448 KB Output is correct
28 Correct 105 ms 27420 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 440 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 8 ms 1372 KB Output is correct
37 Correct 112 ms 27472 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 4 ms 1372 KB Output is correct
41 Correct 101 ms 27556 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 2 ms 1116 KB Output is correct
45 Correct 67 ms 17580 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 25 ms 7240 KB Output is correct
50 Correct 109 ms 27584 KB Output is correct
51 Correct 116 ms 27472 KB Output is correct
52 Correct 117 ms 27412 KB Output is correct
53 Correct 46 ms 17720 KB Output is correct
54 Correct 46 ms 17492 KB Output is correct
55 Correct 103 ms 27504 KB Output is correct
56 Correct 117 ms 27472 KB Output is correct
57 Correct 60 ms 17700 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 428 KB Output is correct
61 Correct 29 ms 7216 KB Output is correct
62 Correct 110 ms 27308 KB Output is correct
63 Correct 142 ms 27360 KB Output is correct
64 Correct 115 ms 27260 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 28 ms 7252 KB Output is correct
67 Correct 107 ms 27216 KB Output is correct
68 Correct 106 ms 27216 KB Output is correct
69 Correct 109 ms 27220 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 26 ms 7348 KB Output is correct
74 Correct 106 ms 27464 KB Output is correct
75 Correct 106 ms 27216 KB Output is correct
76 Correct 149 ms 27220 KB Output is correct
77 Correct 139 ms 27404 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 2 ms 1116 KB Output is correct
81 Correct 53 ms 17372 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 28 ms 7364 KB Output is correct
86 Correct 47 ms 17488 KB Output is correct
87 Correct 45 ms 17488 KB Output is correct
88 Correct 48 ms 17500 KB Output is correct
89 Correct 49 ms 17488 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 0 ms 432 KB Output is correct
92 Correct 2 ms 1116 KB Output is correct
93 Correct 47 ms 17440 KB Output is correct
94 Correct 0 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 12 ms 4736 KB Output is correct
98 Correct 44 ms 17376 KB Output is correct
99 Correct 46 ms 17164 KB Output is correct
100 Correct 61 ms 17232 KB Output is correct
101 Correct 51 ms 17272 KB Output is correct
102 Correct 46 ms 17236 KB Output is correct
103 Correct 46 ms 17236 KB Output is correct
104 Correct 51 ms 17236 KB Output is correct
105 Correct 58 ms 17232 KB Output is correct