oj.uz

Submission #524082

# Submission time Handle Problem Language Result Execution time Memory
524082 2022-02-08T15:28:12 Z prvocislo Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 206 ms 24056 KB 
#include "supertrees.h"
#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <queue>
#include <set>
#include <map>
#include <unordered_map>
#include <cmath>
#include <iomanip>
#include <functional>
#include <bitset>
typedef long long ll;
typedef long double ld;
using namespace std;

//void build(vector<vector<int>> b);
vector<int>f;
vector<vector<int> > b;
void dfs(int vr, vector<int>&v, vector<vector<int>> &p, int edge = -1)
{
	v.push_back(vr);
	f[vr] = 1;
	for (int i = 0; i < p.size(); i++)
	{
		if (i != vr && ((edge == -1 && p[vr][i]) || p[vr][i] == edge) && f[i] == 0)
		{
			dfs(i, v, p, edge);
		}
	}
}
bool create(vector<int>& v, bool cycle = false)
{
	// vytvori strom/cyklus
	if (cycle && v.size() <= 2)
	{
		return false;
	}
	for (int i = 0; i < v.size() - 1; i++)
	{
		b[v[i]][v[i + 1]] = b[v[i + 1]][v[i]] = 1;
	}
	if (cycle)
	{
		b[v[0]][v.back()] = b[v.back()][v[0]] = 1;
	}
	return true;
}
int construct(vector<vector<int>> p)
{
	int n = p.size();
	b.resize(n, vector<int>(n, 0));
	f.resize(n);
	for (int i = 0; i < n; i++)
	{
		if (count(p[i].begin(), p[i].end(), 3)) return 0;
		if (!f[i])
		{
			vector<int>v;
			dfs(i, v, p);
			if (v.size() == 1)
			{
				continue;
			}
			int cc = 0;
			for (int j : v)
			{
				for (int k : v)
				{
					if (!p[j][k])
					{
						return 0;
					}
					if (p[j][k] == 2)
					{
						cc++;
					}
				}
			}
			if (!cc)
			{
				create(v);
				continue;
			}
			for (int j : v)
			{
				f[j] = 0;
			}
			// lubovolny prvok z kazdeho stromu moze byt v cykle!
			// cize spojime tie stromy a spojime lubovolne ich korene
			vector<int> roots;
			for (int j : v)
			{
				if (!f[j])
				{
					roots.push_back(j);
					vector<int>v2;
					dfs(j, v2, p, 1);
					for (int k : v2)
					{
						for (int l : v2)
						{
							if (p[k][l] == 2)
							{
								return 0;
							}
						}
					}
					create(v2);
				}
			}
			if (!create(roots, true))
			{
				return 0;
			}
		}
	}
	build(b);
	return 1;
}

Compilation message

supertrees.cpp: In function 'void dfs(int, std::vector<int>&, std::vector<std::vector<int> >&, int)':
supertrees.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for (int i = 0; i < p.size(); i++)
      |                  ~~^~~~~~~~~~
supertrees.cpp: In function 'bool create(std::vector<int>&, bool)':
supertrees.cpp:40:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |  for (int i = 0; i < v.size() - 1; i++)
      |                  ~~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 8 ms 1100 KB Output is correct
7 Correct 190 ms 22024 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 8 ms 1100 KB Output is correct
7 Correct 190 ms 22024 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 8 ms 1088 KB Output is correct
13 Correct 176 ms 21956 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 4 ms 716 KB Output is correct
17 Correct 90 ms 12164 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 43 ms 5688 KB Output is correct
21 Correct 181 ms 22024 KB Output is correct
22 Correct 171 ms 22008 KB Output is correct
23 Correct 206 ms 22072 KB Output is correct
24 Correct 172 ms 22028 KB Output is correct
25 Correct 76 ms 12032 KB Output is correct
26 Correct 81 ms 12040 KB Output is correct
27 Correct 190 ms 22048 KB Output is correct
28 Correct 172 ms 21920 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 9 ms 1100 KB Output is correct
9 Correct 174 ms 21940 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 8 ms 1088 KB Output is correct
13 Correct 181 ms 22100 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 4 ms 784 KB Output is correct
17 Correct 92 ms 14072 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 292 KB Output is correct
20 Correct 1 ms 292 KB Output is correct
21 Correct 45 ms 6240 KB Output is correct
22 Correct 176 ms 23916 KB Output is correct
23 Correct 185 ms 24056 KB Output is correct
24 Correct 195 ms 24004 KB Output is correct
25 Correct 76 ms 14144 KB Output is correct
26 Correct 83 ms 14072 KB Output is correct
27 Correct 173 ms 23876 KB Output is correct
28 Correct 193 ms 23984 KB Output is correct
29 Correct 77 ms 14020 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 51 ms 5652 KB Output is correct
5 Correct 181 ms 22084 KB Output is correct
6 Correct 171 ms 22012 KB Output is correct
7 Correct 189 ms 22008 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 52 ms 5708 KB Output is correct
10 Correct 184 ms 21944 KB Output is correct
11 Correct 177 ms 21956 KB Output is correct
12 Correct 185 ms 22024 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 45 ms 5756 KB Output is correct
17 Correct 174 ms 22016 KB Output is correct
18 Correct 186 ms 21968 KB Output is correct
19 Correct 171 ms 22024 KB Output is correct
20 Correct 176 ms 22044 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 8 ms 1100 KB Output is correct
7 Correct 190 ms 22024 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 8 ms 1088 KB Output is correct
13 Correct 176 ms 21956 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 4 ms 716 KB Output is correct
17 Correct 90 ms 12164 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 43 ms 5688 KB Output is correct
21 Correct 181 ms 22024 KB Output is correct
22 Correct 171 ms 22008 KB Output is correct
23 Correct 206 ms 22072 KB Output is correct
24 Correct 172 ms 22028 KB Output is correct
25 Correct 76 ms 12032 KB Output is correct
26 Correct 81 ms 12040 KB Output is correct
27 Correct 190 ms 22048 KB Output is correct
28 Correct 172 ms 21920 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 9 ms 1100 KB Output is correct
37 Correct 174 ms 21940 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 8 ms 1088 KB Output is correct
41 Correct 181 ms 22100 KB Output is correct
42 Correct 0 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 4 ms 784 KB Output is correct
45 Correct 92 ms 14072 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 0 ms 292 KB Output is correct
48 Correct 1 ms 292 KB Output is correct
49 Correct 45 ms 6240 KB Output is correct
50 Correct 176 ms 23916 KB Output is correct
51 Correct 185 ms 24056 KB Output is correct
52 Correct 195 ms 24004 KB Output is correct
53 Correct 76 ms 14144 KB Output is correct
54 Correct 83 ms 14072 KB Output is correct
55 Correct 173 ms 23876 KB Output is correct
56 Correct 193 ms 23984 KB Output is correct
57 Correct 77 ms 14020 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 4 ms 844 KB Output is correct
61 Correct 87 ms 14056 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 0 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 49 ms 6212 KB Output is correct
66 Correct 78 ms 14068 KB Output is correct
67 Correct 77 ms 14068 KB Output is correct
68 Correct 78 ms 13980 KB Output is correct
69 Correct 73 ms 14068 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 8 ms 1100 KB Output is correct
7 Correct 190 ms 22024 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 8 ms 1088 KB Output is correct
13 Correct 176 ms 21956 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 4 ms 716 KB Output is correct
17 Correct 90 ms 12164 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 43 ms 5688 KB Output is correct
21 Correct 181 ms 22024 KB Output is correct
22 Correct 171 ms 22008 KB Output is correct
23 Correct 206 ms 22072 KB Output is correct
24 Correct 172 ms 22028 KB Output is correct
25 Correct 76 ms 12032 KB Output is correct
26 Correct 81 ms 12040 KB Output is correct
27 Correct 190 ms 22048 KB Output is correct
28 Correct 172 ms 21920 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 9 ms 1100 KB Output is correct
37 Correct 174 ms 21940 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 8 ms 1088 KB Output is correct
41 Correct 181 ms 22100 KB Output is correct
42 Correct 0 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 4 ms 784 KB Output is correct
45 Correct 92 ms 14072 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 0 ms 292 KB Output is correct
48 Correct 1 ms 292 KB Output is correct
49 Correct 45 ms 6240 KB Output is correct
50 Correct 176 ms 23916 KB Output is correct
51 Correct 185 ms 24056 KB Output is correct
52 Correct 195 ms 24004 KB Output is correct
53 Correct 76 ms 14144 KB Output is correct
54 Correct 83 ms 14072 KB Output is correct
55 Correct 173 ms 23876 KB Output is correct
56 Correct 193 ms 23984 KB Output is correct
57 Correct 77 ms 14020 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 0 ms 204 KB Output is correct
61 Correct 51 ms 5652 KB Output is correct
62 Correct 181 ms 22084 KB Output is correct
63 Correct 171 ms 22012 KB Output is correct
64 Correct 189 ms 22008 KB Output is correct
65 Correct 0 ms 204 KB Output is correct
66 Correct 52 ms 5708 KB Output is correct
67 Correct 184 ms 21944 KB Output is correct
68 Correct 177 ms 21956 KB Output is correct
69 Correct 185 ms 22024 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 1 ms 204 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 45 ms 5756 KB Output is correct
74 Correct 174 ms 22016 KB Output is correct
75 Correct 186 ms 21968 KB Output is correct
76 Correct 171 ms 22024 KB Output is correct
77 Correct 176 ms 22044 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 0 ms 204 KB Output is correct
80 Correct 4 ms 844 KB Output is correct
81 Correct 87 ms 14056 KB Output is correct
82 Correct 1 ms 204 KB Output is correct
83 Correct 0 ms 204 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 49 ms 6212 KB Output is correct
86 Correct 78 ms 14068 KB Output is correct
87 Correct 77 ms 14068 KB Output is correct
88 Correct 78 ms 13980 KB Output is correct
89 Correct 73 ms 14068 KB Output is correct
90 Correct 0 ms 204 KB Output is correct
91 Correct 1 ms 204 KB Output is correct
92 Correct 4 ms 844 KB Output is correct
93 Correct 80 ms 14148 KB Output is correct
94 Correct 1 ms 204 KB Output is correct
95 Correct 0 ms 204 KB Output is correct
96 Correct 0 ms 288 KB Output is correct
97 Correct 42 ms 3692 KB Output is correct
98 Correct 77 ms 14072 KB Output is correct
99 Correct 86 ms 14148 KB Output is correct
100 Correct 76 ms 14064 KB Output is correct
101 Correct 72 ms 14056 KB Output is correct
102 Correct 71 ms 14020 KB Output is correct
103 Correct 77 ms 14060 KB Output is correct
104 Correct 76 ms 14020 KB Output is correct
105 Correct 84 ms 14072 KB Output is correct