oj.uz

Submission #1078791

# Submission time Handle Problem Language Result Execution time Memory
1078791 2024-08-28T06:17:47 Z Muhammad_Aneeq Connecting Supertrees (IOI20_supertrees) C++17
40 / 100
 138 ms 23432 KB 
#include <vector>
#include <iostream>
using namespace std;
int const MAXN=1000;
void build(vector<vector<int>> b);
int construct(vector<vector<int>> p)
{
	int n=p.size();
	bool subt1=1,subt2=1,subt3=1,subt4=1;
	for (int i=0;i<n;i++)
	{
		for (int j=i+1;j<n;j++)
		{
			if (p[i][j]!=1)
				subt1=0;
			if (p[i][j]>1)
				subt2=0;
			if (p[i][j]==1)
				subt3=0;
			if (p[i][j]>2)
				subt4=0;
		}
	}
	if (subt1)
	{
		vector<vector<int>>b(n,vector<int>(n));
		for (int i=1;i<n;i++)
			b[0][i]=b[i][0]=1;
		build(b);
		return 1;
	}
	if (subt2)
	{
		bool vis[n]={};
		int head[n]={};
		vector<vector<int>>b(n,vector<int>(n));
		for (int i=0;i<n;i++)
		{
			if (!vis[i])
			{
				vis[i]=1;
				head[i]=i;
				for (int j=0;j<n;j++)
				{
					if (vis[j])
						continue;
					if (p[i][j])
					{
						vis[j]=1;
						b[i][j]=b[j][i]=1;
						head[j]=i;
					}
				}
			}
		}
		for (int i=0;i<n;i++)
		{
			for (int j=0;j<n;j++)
			{
				if (p[i][j]&&head[i]!=head[j])
					return 0;
				if (p[i][j]==0&&head[i]==head[j])
					return 0;
			}
		}
		build(b);
		return 1;
	}
	if (subt3)
	{
		bool vis[n]={};
		int head[n]={};
		vector<vector<int>>b(n,vector<int>(n));
		for (int i=0;i<n;i++)
		{
			if (!vis[i])
			{
				vector<int>z;
				for (int j=0;j<n;j++)
				{
					if (p[i][j])
						z.push_back(j);
				}
				if (z.size()==1)
				{
					head[i]=i;
					continue;
				}
				if (z.size()==2)
					return 0;
				for (int j=0;j<z.size();j++)
				{
					vis[z[j]]=1;
					head[z[j]]=i;
					b[z[j]][z[(j+1)%z.size()]]=b[z[(j+1)%z.size()]][z[j]]=1;
				}
			}
		}
		for (int i=0;i<n;i++)
		{
			for (int j=i+1;j<n;j++)
			{
				if (p[i][j]&&head[i]!=head[j])
					return 0;
				if (p[i][j]==0&&head[i]==head[j])
					return 0;
			}
		}
		build(b);
		return 1;
	}
	bool seen[n]={};
	int head[n]={};
	bool vis[n]={};
	vector<vector<int>>b(n,vector<int>(n,0));
	for (int i=0;i<n;i++)
	{
		if (!seen[i])
		{
			seen[i]=1;
			head[i]=i;
			for (int j=0;j<n;j++)
			{
				if (seen[j])
				{
					if (p[i][j])
						return 0;
					continue;
				}
				if (p[i][j]==1)
				{
					seen[j]=1;
					b[i][j]=b[j][i]=1;
					head[j]=i;
				}
			}
		}
	}
	for (int i=0;i<n;i++)
	{
		for (int j=0;j<n;j++)
		{
			if (p[i][j]==1&&head[i]!=head[j])
				return 0;
			if (p[i][j]==0&&head[i]==head[j])
				return 0;
		}
	}
	for (int i=0;i<n;i++)
	{
		if (vis[head[i]])
			continue;
		vector<int>x;
		for (int j=0;j<n;j++)
		{
			if (p[i][j]&&!vis[head[j]])
			{
				x.push_back(head[j]);
				vis[head[j]]=1;
			}
		}
		if (x.size()<3)
			continue;
		int pa=head[i];
		for (int  j=0;j<x.size();j++)
		{
			int u=x[j],v=x[(j+1)%x.size()];
			head[u]=head[v]=pa;
			b[u][v]=b[v][u]=1;
		}
	}
	for (int i=0;i<n;i++)
	{
		for (int j=0;j<n;j++)
		{
			int u=head[head[i]],v=head[head[j]];
			if (u==v)
				continue;
			if (p[i][j]!=2&&b[u][v])
				return 0;
			if (p[i][j]==2&&!b[u][v])
				return 0;
		}
	}
	build(b);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:91:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     for (int j=0;j<z.size();j++)
      |                  ~^~~~~~~~~
supertrees.cpp:165:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  165 |   for (int  j=0;j<x.size();j++)
      |                 ~^~~~~~~~~
supertrees.cpp:9:31: warning: variable 'subt4' set but not used [-Wunused-but-set-variable]
    9 |  bool subt1=1,subt2=1,subt3=1,subt4=1;
      |                               ^~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1372 KB Output is correct
7 Correct 116 ms 23380 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1372 KB Output is correct
7 Correct 116 ms 23380 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 432 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 124 ms 23304 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 78 ms 13524 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 29 ms 6228 KB Output is correct
21 Correct 138 ms 23376 KB Output is correct
22 Correct 123 ms 23392 KB Output is correct
23 Correct 133 ms 23296 KB Output is correct
24 Correct 117 ms 23376 KB Output is correct
25 Correct 60 ms 13684 KB Output is correct
26 Correct 60 ms 13396 KB Output is correct
27 Correct 121 ms 23376 KB Output is correct
28 Correct 119 ms 23376 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 5 ms 1372 KB Output is correct
9 Correct 119 ms 23380 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 8 ms 1372 KB Output is correct
13 Correct 124 ms 23432 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 56 ms 13400 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 29 ms 6236 KB Output is correct
22 Correct 117 ms 23380 KB Output is correct
23 Correct 116 ms 23260 KB Output is correct
24 Correct 126 ms 22608 KB Output is correct
25 Correct 92 ms 12120 KB Output is correct
26 Correct 53 ms 12116 KB Output is correct
27 Correct 118 ms 22100 KB Output is correct
28 Correct 128 ms 21944 KB Output is correct
29 Correct 52 ms 12080 KB Output is correct

Subtask #4
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 348 KB Output is correct
4 Correct 39 ms 5724 KB Output is correct
5 Correct 130 ms 21948 KB Output is correct
6 Correct 124 ms 22040 KB Output is correct
7 Correct 122 ms 22036 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 32 ms 5712 KB Output is correct
10 Correct 127 ms 22044 KB Output is correct
11 Correct 130 ms 22100 KB Output is correct
12 Correct 134 ms 22100 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
15 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1372 KB Output is correct
7 Correct 116 ms 23380 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 432 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 124 ms 23304 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 78 ms 13524 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 29 ms 6228 KB Output is correct
21 Correct 138 ms 23376 KB Output is correct
22 Correct 123 ms 23392 KB Output is correct
23 Correct 133 ms 23296 KB Output is correct
24 Correct 117 ms 23376 KB Output is correct
25 Correct 60 ms 13684 KB Output is correct
26 Correct 60 ms 13396 KB Output is correct
27 Correct 121 ms 23376 KB Output is correct
28 Correct 119 ms 23376 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1372 KB Output is correct
37 Correct 119 ms 23380 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 8 ms 1372 KB Output is correct
41 Correct 124 ms 23432 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 56 ms 13400 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 29 ms 6236 KB Output is correct
50 Correct 117 ms 23380 KB Output is correct
51 Correct 116 ms 23260 KB Output is correct
52 Correct 126 ms 22608 KB Output is correct
53 Correct 92 ms 12120 KB Output is correct
54 Correct 53 ms 12116 KB Output is correct
55 Correct 118 ms 22100 KB Output is correct
56 Correct 128 ms 21944 KB Output is correct
57 Correct 52 ms 12080 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 56 ms 12052 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Incorrect 1 ms 348 KB Answer gives possible 0 while actual possible 1
64 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1372 KB Output is correct
7 Correct 116 ms 23380 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 432 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 124 ms 23304 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 78 ms 13524 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 29 ms 6228 KB Output is correct
21 Correct 138 ms 23376 KB Output is correct
22 Correct 123 ms 23392 KB Output is correct
23 Correct 133 ms 23296 KB Output is correct
24 Correct 117 ms 23376 KB Output is correct
25 Correct 60 ms 13684 KB Output is correct
26 Correct 60 ms 13396 KB Output is correct
27 Correct 121 ms 23376 KB Output is correct
28 Correct 119 ms 23376 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1372 KB Output is correct
37 Correct 119 ms 23380 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 8 ms 1372 KB Output is correct
41 Correct 124 ms 23432 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 56 ms 13400 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 29 ms 6236 KB Output is correct
50 Correct 117 ms 23380 KB Output is correct
51 Correct 116 ms 23260 KB Output is correct
52 Correct 126 ms 22608 KB Output is correct
53 Correct 92 ms 12120 KB Output is correct
54 Correct 53 ms 12116 KB Output is correct
55 Correct 118 ms 22100 KB Output is correct
56 Correct 128 ms 21944 KB Output is correct
57 Correct 52 ms 12080 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 348 KB Output is correct
61 Correct 39 ms 5724 KB Output is correct
62 Correct 130 ms 21948 KB Output is correct
63 Correct 124 ms 22040 KB Output is correct
64 Correct 122 ms 22036 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 32 ms 5712 KB Output is correct
67 Correct 127 ms 22044 KB Output is correct
68 Correct 130 ms 22100 KB Output is correct
69 Correct 134 ms 22100 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
72 Halted 0 ms 0 KB -