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Submission #800057

# Submission time Handle Problem Language Result Execution time Memory
800057 2023-08-01T09:38:48 Z LittleCube Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 166 ms 31980 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

int n;
vector<vector<int>> adj, tree, trees, ans;
vector<int> cc, subtree;

void dfs(int u, int r, vector<vector<int>> &adj, vector<int> &cc)
{
	cc[u] = r;
	for (int v = 0; v < n; v++)
		if (adj[u][v] && cc[v] == -1)
			dfs(v, r, adj, cc);
}

int construct(vector<vector<int>> p)
{
	n = p.size();
	adj = tree = ans = vector<vector<int>>(n, vector<int>(n, 0));
	cc = subtree = vector<int>(n, -1);
	trees.resize(n);
	for (int i = 0; i < n; i++)
		for (int j = 0; j < n; j++)
		{
			adj[i][j] = p[i][j] > 0;
			tree[i][j] = p[i][j] == 1;
			if (p[i][j] == 3)
				return 0;
		}
	for (int i = 0; i < n; i++)
		if (cc[i] == -1)
			dfs(i, i, adj, cc);
	for (int i = 0; i < n; i++)
		if (subtree[i] == -1)
			dfs(i, i, tree, subtree);
	for (int i = 0; i < n; i++)
		for (int j = 0; j < n; j++)
		{
			if (cc[i] != cc[j])
			{
				if (p[i][j] != 0)
					return 0;
			}
			else if (cc[i] == cc[j] && subtree[i] != subtree[j])
			{
				if (p[i][j] != 2)
					return 0;
			}
			else
			{
				if (p[i][j] != 1)
					return 0;
			}
		}
	for (int i = 0; i < n; i++)
		if (subtree[i] != i)
			ans[i][subtree[i]] = ans[subtree[i]][i] = 1;
		else if(subtree[i] == i)
			trees[cc[i]].emplace_back(i);
	for (int i = 0; i < n; i++)
		if(trees[i].size() <= 1)
			continue;
		else if(trees[i].size() == 2)
			return 0;
		else
		{
			int k = trees[i].size();
			for (int j = 0; j < k; j++)
				ans[trees[i][j]][trees[i][(j + 1) % k]] = ans[trees[i][(j + 1) % k]][trees[i][j]] = 1;
		}
	
	build(ans);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 7 ms 1612 KB Output is correct
7 Correct 157 ms 31980 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 7 ms 1612 KB Output is correct
7 Correct 157 ms 31980 KB Output is correct
8 Correct 0 ms 304 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 296 KB Output is correct
11 Correct 0 ms 300 KB Output is correct
12 Correct 7 ms 1572 KB Output is correct
13 Correct 157 ms 31860 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 1108 KB Output is correct
17 Correct 81 ms 22060 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 39 ms 8180 KB Output is correct
21 Correct 160 ms 31876 KB Output is correct
22 Correct 155 ms 31856 KB Output is correct
23 Correct 166 ms 31876 KB Output is correct
24 Correct 157 ms 31868 KB Output is correct
25 Correct 68 ms 22000 KB Output is correct
26 Correct 65 ms 22004 KB Output is correct
27 Correct 161 ms 31860 KB Output is correct
28 Correct 157 ms 31952 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 7 ms 1500 KB Output is correct
9 Correct 154 ms 31884 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 300 KB Output is correct
12 Correct 7 ms 1588 KB Output is correct
13 Correct 155 ms 31968 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 1108 KB Output is correct
17 Correct 74 ms 22052 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 39 ms 8224 KB Output is correct
22 Correct 160 ms 31924 KB Output is correct
23 Correct 156 ms 31836 KB Output is correct
24 Correct 162 ms 31868 KB Output is correct
25 Correct 68 ms 22012 KB Output is correct
26 Correct 66 ms 22016 KB Output is correct
27 Correct 157 ms 31852 KB Output is correct
28 Correct 162 ms 31872 KB Output is correct
29 Correct 73 ms 22052 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 41 ms 8296 KB Output is correct
5 Correct 163 ms 31856 KB Output is correct
6 Correct 156 ms 31948 KB Output is correct
7 Correct 163 ms 31852 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 39 ms 8236 KB Output is correct
10 Correct 157 ms 31948 KB Output is correct
11 Correct 155 ms 31948 KB Output is correct
12 Correct 160 ms 31856 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 39 ms 8276 KB Output is correct
17 Correct 162 ms 31860 KB Output is correct
18 Correct 159 ms 31872 KB Output is correct
19 Correct 160 ms 31832 KB Output is correct
20 Correct 155 ms 31928 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 7 ms 1612 KB Output is correct
7 Correct 157 ms 31980 KB Output is correct
8 Correct 0 ms 304 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 296 KB Output is correct
11 Correct 0 ms 300 KB Output is correct
12 Correct 7 ms 1572 KB Output is correct
13 Correct 157 ms 31860 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 1108 KB Output is correct
17 Correct 81 ms 22060 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 39 ms 8180 KB Output is correct
21 Correct 160 ms 31876 KB Output is correct
22 Correct 155 ms 31856 KB Output is correct
23 Correct 166 ms 31876 KB Output is correct
24 Correct 157 ms 31868 KB Output is correct
25 Correct 68 ms 22000 KB Output is correct
26 Correct 65 ms 22004 KB Output is correct
27 Correct 161 ms 31860 KB Output is correct
28 Correct 157 ms 31952 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 300 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1500 KB Output is correct
37 Correct 154 ms 31884 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 300 KB Output is correct
40 Correct 7 ms 1588 KB Output is correct
41 Correct 155 ms 31968 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 1108 KB Output is correct
45 Correct 74 ms 22052 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 8224 KB Output is correct
50 Correct 160 ms 31924 KB Output is correct
51 Correct 156 ms 31836 KB Output is correct
52 Correct 162 ms 31868 KB Output is correct
53 Correct 68 ms 22012 KB Output is correct
54 Correct 66 ms 22016 KB Output is correct
55 Correct 157 ms 31852 KB Output is correct
56 Correct 162 ms 31872 KB Output is correct
57 Correct 73 ms 22052 KB Output is correct
58 Correct 0 ms 296 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 4 ms 1108 KB Output is correct
61 Correct 77 ms 22040 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 39 ms 8160 KB Output is correct
66 Correct 66 ms 22000 KB Output is correct
67 Correct 68 ms 22032 KB Output is correct
68 Correct 67 ms 22000 KB Output is correct
69 Correct 67 ms 21964 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 7 ms 1612 KB Output is correct
7 Correct 157 ms 31980 KB Output is correct
8 Correct 0 ms 304 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 296 KB Output is correct
11 Correct 0 ms 300 KB Output is correct
12 Correct 7 ms 1572 KB Output is correct
13 Correct 157 ms 31860 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 1108 KB Output is correct
17 Correct 81 ms 22060 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 39 ms 8180 KB Output is correct
21 Correct 160 ms 31876 KB Output is correct
22 Correct 155 ms 31856 KB Output is correct
23 Correct 166 ms 31876 KB Output is correct
24 Correct 157 ms 31868 KB Output is correct
25 Correct 68 ms 22000 KB Output is correct
26 Correct 65 ms 22004 KB Output is correct
27 Correct 161 ms 31860 KB Output is correct
28 Correct 157 ms 31952 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 300 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1500 KB Output is correct
37 Correct 154 ms 31884 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 300 KB Output is correct
40 Correct 7 ms 1588 KB Output is correct
41 Correct 155 ms 31968 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 1108 KB Output is correct
45 Correct 74 ms 22052 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 8224 KB Output is correct
50 Correct 160 ms 31924 KB Output is correct
51 Correct 156 ms 31836 KB Output is correct
52 Correct 162 ms 31868 KB Output is correct
53 Correct 68 ms 22012 KB Output is correct
54 Correct 66 ms 22016 KB Output is correct
55 Correct 157 ms 31852 KB Output is correct
56 Correct 162 ms 31872 KB Output is correct
57 Correct 73 ms 22052 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 41 ms 8296 KB Output is correct
62 Correct 163 ms 31856 KB Output is correct
63 Correct 156 ms 31948 KB Output is correct
64 Correct 163 ms 31852 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 39 ms 8236 KB Output is correct
67 Correct 157 ms 31948 KB Output is correct
68 Correct 155 ms 31948 KB Output is correct
69 Correct 160 ms 31856 KB Output is correct
70 Correct 1 ms 300 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 0 ms 212 KB Output is correct
73 Correct 39 ms 8276 KB Output is correct
74 Correct 162 ms 31860 KB Output is correct
75 Correct 159 ms 31872 KB Output is correct
76 Correct 160 ms 31832 KB Output is correct
77 Correct 155 ms 31928 KB Output is correct
78 Correct 0 ms 296 KB Output is correct
79 Correct 0 ms 212 KB Output is correct
80 Correct 4 ms 1108 KB Output is correct
81 Correct 77 ms 22040 KB Output is correct
82 Correct 0 ms 212 KB Output is correct
83 Correct 0 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 39 ms 8160 KB Output is correct
86 Correct 66 ms 22000 KB Output is correct
87 Correct 68 ms 22032 KB Output is correct
88 Correct 67 ms 22000 KB Output is correct
89 Correct 67 ms 21964 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 0 ms 212 KB Output is correct
92 Correct 3 ms 1080 KB Output is correct
93 Correct 64 ms 22000 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 0 ms 304 KB Output is correct
97 Correct 16 ms 5748 KB Output is correct
98 Correct 63 ms 21964 KB Output is correct
99 Correct 63 ms 22012 KB Output is correct
100 Correct 62 ms 22000 KB Output is correct
101 Correct 62 ms 21932 KB Output is correct
102 Correct 61 ms 21964 KB Output is correct
103 Correct 64 ms 21928 KB Output is correct
104 Correct 63 ms 22000 KB Output is correct
105 Correct 67 ms 22004 KB Output is correct