oj.uz

Submission #786617

# Submission time Handle Problem Language Result Execution time Memory
786617 2023-07-18T10:12:55 Z Pablo_No Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 172 ms 22288 KB 
#include "supertrees.h"
#include <vector>
#include <iostream>

using namespace std;

vector<int> cc, cc2, rr;
int n;
vector<int> used, used2;

void dfs(int v, const vector<vector<int>>& g)
{
	used[v] = true;
	cc.push_back(v);
	for(int u = 0; u < n; u++) if(g[v][u] && !used[u])
		dfs(u, g);
}

void dfs2(int v, const vector<vector<int>>& g)
{
	used2[v] = true;
	cc2.push_back(v);
	for(int u = 0; u < n; u++) if(g[v][u] == 1 && !used2[u])
		dfs2(u, g);
}

int construct(std::vector<std::vector<int>> p) {
	n = p.size();

	for(int a = 0; a < n; a++)
		for(int b = 0; b < n; b++)
			if(p[a][b] != p[b][a])
				return 0;

	vector<vector<int>> ans(n, vector<int>(n, 0));

	used.assign(n, 0);

	for(int i = 0; i < n; i++) if(!used[i])
	{
		cc.clear();
		dfs(i, p);

		used2.assign(n, 0);

		rr.clear();

		for(int j : cc) if(!used2[j])
		{
			cc2.clear();
			dfs2(j, p);

			/// Check not dif on cc of 1
			for(auto a : cc2)
				for(auto b : cc2) if(a != b)
				{
					if(p[a][b] != 1)
						return 0;
				}

			for(int k = 0; k < cc2.size()-1; k++)
			{
				ans[cc2[k]][cc2[k+1]] = 1;
				ans[cc2[k+1]][cc2[k]] = 1;
			}

			rr.push_back(j);
		}
		if(rr.size() == 1)
			continue;
		int typ = p[rr[0]][rr[1]];

		if(rr.size() <= typ)
			return 0;
		
		if(typ == 3)
			return 0;
		
		
		for(auto a : rr)
		{
			for(auto b : rr) if(a != b)
			{
				if(p[a][b] != typ)
				{
					return 0;
				}
			}
		}

		if(typ == 2)
		{
			for(int j = 0; j < rr.size()-1; j++)
			{
				ans[rr[j]][rr[j+1]] = 1;
				ans[rr[j+1]][rr[j]] = 1;
			}
			ans[rr[0]][rr[rr.size()-1]] = 1;
			ans[rr[rr.size()-1]][rr[0]] = 1;
		}
		if(typ == 3)
		{
			for(int j = 0; j < rr.size()-2; j++)
			{
				ans[rr[j]][rr[j+1]] = 1;
				ans[rr[j+1]][rr[j]] = 1;
			}
			ans[rr[0]][rr[rr.size()-2]] = 1;
			ans[rr[rr.size()-2]][rr[0]] = 1;

			ans[rr[0]][rr[rr.size()-1]] = 1;
			ans[rr[rr.size()-1]][rr[0]] = 1;

			ans[rr[1]][rr[rr.size()-1]] = 1;
			ans[rr[rr.size()-1]][rr[1]] = 1;
		}
	}
	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:61:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |    for(int k = 0; k < cc2.size()-1; k++)
      |                   ~~^~~~~~~~~~~~~~
supertrees.cpp:73:16: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   73 |   if(rr.size() <= typ)
      |      ~~~~~~~~~~^~~~~~
supertrees.cpp:93:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |    for(int j = 0; j < rr.size()-1; j++)
      |                   ~~^~~~~~~~~~~~~
supertrees.cpp:103:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |    for(int j = 0; j < rr.size()-2; j++)
      |                   ~~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 155 ms 22008 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 155 ms 22008 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 167 ms 22020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 82 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 39 ms 5648 KB Output is correct
21 Correct 154 ms 22032 KB Output is correct
22 Correct 163 ms 21984 KB Output is correct
23 Correct 162 ms 22032 KB Output is correct
24 Correct 155 ms 21980 KB Output is correct
25 Correct 64 ms 12036 KB Output is correct
26 Correct 61 ms 12040 KB Output is correct
27 Correct 158 ms 22028 KB Output is correct
28 Correct 159 ms 22024 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 9 ms 1096 KB Output is correct
9 Correct 158 ms 22108 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 156 ms 22140 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 720 KB Output is correct
17 Correct 89 ms 12448 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 39 ms 5788 KB Output is correct
22 Correct 154 ms 22096 KB Output is correct
23 Correct 172 ms 22216 KB Output is correct
24 Correct 172 ms 22184 KB Output is correct
25 Correct 67 ms 12164 KB Output is correct
26 Correct 65 ms 12236 KB Output is correct
27 Correct 155 ms 22136 KB Output is correct
28 Correct 158 ms 22200 KB Output is correct
29 Correct 65 ms 12188 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 40 ms 5720 KB Output is correct
5 Correct 153 ms 22020 KB Output is correct
6 Correct 155 ms 21964 KB Output is correct
7 Correct 160 ms 22020 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 41 ms 5740 KB Output is correct
10 Correct 158 ms 22024 KB Output is correct
11 Correct 158 ms 22020 KB Output is correct
12 Correct 164 ms 22288 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 40 ms 5704 KB Output is correct
17 Correct 154 ms 22024 KB Output is correct
18 Correct 158 ms 22044 KB Output is correct
19 Correct 156 ms 22052 KB Output is correct
20 Correct 159 ms 22020 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 155 ms 22008 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 167 ms 22020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 82 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 39 ms 5648 KB Output is correct
21 Correct 154 ms 22032 KB Output is correct
22 Correct 163 ms 21984 KB Output is correct
23 Correct 162 ms 22032 KB Output is correct
24 Correct 155 ms 21980 KB Output is correct
25 Correct 64 ms 12036 KB Output is correct
26 Correct 61 ms 12040 KB Output is correct
27 Correct 158 ms 22028 KB Output is correct
28 Correct 159 ms 22024 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 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 9 ms 1096 KB Output is correct
37 Correct 158 ms 22108 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 7 ms 1108 KB Output is correct
41 Correct 156 ms 22140 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 720 KB Output is correct
45 Correct 89 ms 12448 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 5788 KB Output is correct
50 Correct 154 ms 22096 KB Output is correct
51 Correct 172 ms 22216 KB Output is correct
52 Correct 172 ms 22184 KB Output is correct
53 Correct 67 ms 12164 KB Output is correct
54 Correct 65 ms 12236 KB Output is correct
55 Correct 155 ms 22136 KB Output is correct
56 Correct 158 ms 22200 KB Output is correct
57 Correct 65 ms 12188 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 4 ms 724 KB Output is correct
61 Correct 77 ms 12328 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 40 ms 5792 KB Output is correct
66 Correct 66 ms 12236 KB Output is correct
67 Correct 67 ms 12192 KB Output is correct
68 Correct 64 ms 12184 KB Output is correct
69 Correct 64 ms 12248 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 155 ms 22008 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 167 ms 22020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 82 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 39 ms 5648 KB Output is correct
21 Correct 154 ms 22032 KB Output is correct
22 Correct 163 ms 21984 KB Output is correct
23 Correct 162 ms 22032 KB Output is correct
24 Correct 155 ms 21980 KB Output is correct
25 Correct 64 ms 12036 KB Output is correct
26 Correct 61 ms 12040 KB Output is correct
27 Correct 158 ms 22028 KB Output is correct
28 Correct 159 ms 22024 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 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 9 ms 1096 KB Output is correct
37 Correct 158 ms 22108 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 7 ms 1108 KB Output is correct
41 Correct 156 ms 22140 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 720 KB Output is correct
45 Correct 89 ms 12448 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 5788 KB Output is correct
50 Correct 154 ms 22096 KB Output is correct
51 Correct 172 ms 22216 KB Output is correct
52 Correct 172 ms 22184 KB Output is correct
53 Correct 67 ms 12164 KB Output is correct
54 Correct 65 ms 12236 KB Output is correct
55 Correct 155 ms 22136 KB Output is correct
56 Correct 158 ms 22200 KB Output is correct
57 Correct 65 ms 12188 KB Output is correct
58 Correct 1 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 40 ms 5720 KB Output is correct
62 Correct 153 ms 22020 KB Output is correct
63 Correct 155 ms 21964 KB Output is correct
64 Correct 160 ms 22020 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 41 ms 5740 KB Output is correct
67 Correct 158 ms 22024 KB Output is correct
68 Correct 158 ms 22020 KB Output is correct
69 Correct 164 ms 22288 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Correct 0 ms 212 KB Output is correct
73 Correct 40 ms 5704 KB Output is correct
74 Correct 154 ms 22024 KB Output is correct
75 Correct 158 ms 22044 KB Output is correct
76 Correct 156 ms 22052 KB Output is correct
77 Correct 159 ms 22020 KB Output is correct
78 Correct 0 ms 212 KB Output is correct
79 Correct 0 ms 212 KB Output is correct
80 Correct 4 ms 724 KB Output is correct
81 Correct 77 ms 12328 KB Output is correct
82 Correct 0 ms 212 KB Output is correct
83 Correct 0 ms 212 KB Output is correct
84 Correct 0 ms 212 KB Output is correct
85 Correct 40 ms 5792 KB Output is correct
86 Correct 66 ms 12236 KB Output is correct
87 Correct 67 ms 12192 KB Output is correct
88 Correct 64 ms 12184 KB Output is correct
89 Correct 64 ms 12248 KB Output is correct
90 Correct 0 ms 212 KB Output is correct
91 Correct 0 ms 212 KB Output is correct
92 Correct 4 ms 724 KB Output is correct
93 Correct 77 ms 12320 KB Output is correct
94 Correct 0 ms 212 KB Output is correct
95 Correct 0 ms 212 KB Output is correct
96 Correct 1 ms 212 KB Output is correct
97 Correct 17 ms 3220 KB Output is correct
98 Correct 65 ms 12160 KB Output is correct
99 Correct 66 ms 12216 KB Output is correct
100 Correct 68 ms 12168 KB Output is correct
101 Correct 67 ms 12184 KB Output is correct
102 Correct 68 ms 12236 KB Output is correct
103 Correct 68 ms 14068 KB Output is correct
104 Correct 74 ms 14068 KB Output is correct
105 Correct 79 ms 14076 KB Output is correct