oj.uz

Submission #1078799

# Submission time Handle Problem Language Result Execution time Memory
1078799 2024-08-28T06:19:11 Z Muhammad_Aneeq Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 156 ms 24148 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 (i!=j&&p[i][j]==1)
						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 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 388 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 128 ms 23892 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 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 388 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 128 ms 23892 KB Output is correct
8 Correct 1 ms 432 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 440 KB Output is correct
12 Correct 6 ms 1416 KB Output is correct
13 Correct 133 ms 23948 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 85 ms 14204 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 31 ms 6256 KB Output is correct
21 Correct 127 ms 23944 KB Output is correct
22 Correct 133 ms 23892 KB Output is correct
23 Correct 144 ms 23512 KB Output is correct
24 Correct 121 ms 23892 KB Output is correct
25 Correct 50 ms 14088 KB Output is correct
26 Correct 66 ms 14200 KB Output is correct
27 Correct 122 ms 23940 KB Output is correct
28 Correct 113 ms 23892 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 436 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 5 ms 1372 KB Output is correct
9 Correct 116 ms 24068 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 115 ms 24072 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 440 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 56 ms 14076 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 28 ms 6236 KB Output is correct
22 Correct 116 ms 24028 KB Output is correct
23 Correct 114 ms 24144 KB Output is correct
24 Correct 141 ms 23928 KB Output is correct
25 Correct 56 ms 13744 KB Output is correct
26 Correct 53 ms 13904 KB Output is correct
27 Correct 156 ms 23784 KB Output is correct
28 Correct 123 ms 23700 KB Output is correct
29 Correct 53 ms 13908 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 348 KB Output is correct
4 Correct 32 ms 6140 KB Output is correct
5 Correct 133 ms 23688 KB Output is correct
6 Correct 128 ms 23656 KB Output is correct
7 Correct 144 ms 23676 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 35 ms 6348 KB Output is correct
10 Correct 129 ms 23696 KB Output is correct
11 Correct 143 ms 23636 KB Output is correct
12 Correct 129 ms 23824 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 32 ms 6276 KB Output is correct
17 Correct 127 ms 24068 KB Output is correct
18 Correct 125 ms 23928 KB Output is correct
19 Correct 121 ms 24148 KB Output is correct
20 Correct 118 ms 24060 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 388 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 128 ms 23892 KB Output is correct
8 Correct 1 ms 432 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 440 KB Output is correct
12 Correct 6 ms 1416 KB Output is correct
13 Correct 133 ms 23948 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 85 ms 14204 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 31 ms 6256 KB Output is correct
21 Correct 127 ms 23944 KB Output is correct
22 Correct 133 ms 23892 KB Output is correct
23 Correct 144 ms 23512 KB Output is correct
24 Correct 121 ms 23892 KB Output is correct
25 Correct 50 ms 14088 KB Output is correct
26 Correct 66 ms 14200 KB Output is correct
27 Correct 122 ms 23940 KB Output is correct
28 Correct 113 ms 23892 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 436 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 5 ms 1372 KB Output is correct
37 Correct 116 ms 24068 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1372 KB Output is correct
41 Correct 115 ms 24072 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 440 KB Output is correct
44 Correct 3 ms 856 KB Output is correct
45 Correct 56 ms 14076 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 28 ms 6236 KB Output is correct
50 Correct 116 ms 24028 KB Output is correct
51 Correct 114 ms 24144 KB Output is correct
52 Correct 141 ms 23928 KB Output is correct
53 Correct 56 ms 13744 KB Output is correct
54 Correct 53 ms 13904 KB Output is correct
55 Correct 156 ms 23784 KB Output is correct
56 Correct 123 ms 23700 KB Output is correct
57 Correct 53 ms 13908 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 2 ms 932 KB Output is correct
61 Correct 58 ms 13860 KB Output is correct
62 Correct 1 ms 344 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 432 KB Output is correct
65 Correct 30 ms 6312 KB Output is correct
66 Correct 54 ms 14164 KB Output is correct
67 Correct 53 ms 14164 KB Output is correct
68 Correct 51 ms 14160 KB Output is correct
69 Correct 56 ms 14072 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 388 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 128 ms 23892 KB Output is correct
8 Correct 1 ms 432 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 440 KB Output is correct
12 Correct 6 ms 1416 KB Output is correct
13 Correct 133 ms 23948 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 85 ms 14204 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 31 ms 6256 KB Output is correct
21 Correct 127 ms 23944 KB Output is correct
22 Correct 133 ms 23892 KB Output is correct
23 Correct 144 ms 23512 KB Output is correct
24 Correct 121 ms 23892 KB Output is correct
25 Correct 50 ms 14088 KB Output is correct
26 Correct 66 ms 14200 KB Output is correct
27 Correct 122 ms 23940 KB Output is correct
28 Correct 113 ms 23892 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 436 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 5 ms 1372 KB Output is correct
37 Correct 116 ms 24068 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1372 KB Output is correct
41 Correct 115 ms 24072 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 440 KB Output is correct
44 Correct 3 ms 856 KB Output is correct
45 Correct 56 ms 14076 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 28 ms 6236 KB Output is correct
50 Correct 116 ms 24028 KB Output is correct
51 Correct 114 ms 24144 KB Output is correct
52 Correct 141 ms 23928 KB Output is correct
53 Correct 56 ms 13744 KB Output is correct
54 Correct 53 ms 13904 KB Output is correct
55 Correct 156 ms 23784 KB Output is correct
56 Correct 123 ms 23700 KB Output is correct
57 Correct 53 ms 13908 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 32 ms 6140 KB Output is correct
62 Correct 133 ms 23688 KB Output is correct
63 Correct 128 ms 23656 KB Output is correct
64 Correct 144 ms 23676 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 35 ms 6348 KB Output is correct
67 Correct 129 ms 23696 KB Output is correct
68 Correct 143 ms 23636 KB Output is correct
69 Correct 129 ms 23824 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 32 ms 6276 KB Output is correct
74 Correct 127 ms 24068 KB Output is correct
75 Correct 125 ms 23928 KB Output is correct
76 Correct 121 ms 24148 KB Output is correct
77 Correct 118 ms 24060 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 1 ms 348 KB Output is correct
80 Correct 2 ms 932 KB Output is correct
81 Correct 58 ms 13860 KB Output is correct
82 Correct 1 ms 344 KB Output is correct
83 Correct 1 ms 348 KB Output is correct
84 Correct 0 ms 432 KB Output is correct
85 Correct 30 ms 6312 KB Output is correct
86 Correct 54 ms 14164 KB Output is correct
87 Correct 53 ms 14164 KB Output is correct
88 Correct 51 ms 14160 KB Output is correct
89 Correct 56 ms 14072 KB Output is correct
90 Correct 1 ms 344 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 860 KB Output is correct
93 Correct 57 ms 14164 KB Output is correct
94 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
95 Halted 0 ms 0 KB -