oj.uz

Submission #1078802

# Submission time Handle Problem Language Result Execution time Memory
1078802 2024-08-28T06:19:59 Z Muhammad_Aneeq Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 153 ms 24112 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()==2)
			return 0;
		if (x.size()<2)
			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:167:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  167 |   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 0 ms 344 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 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1192 KB Output is correct
7 Correct 115 ms 23872 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1192 KB Output is correct
7 Correct 115 ms 23872 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1340 KB Output is correct
13 Correct 123 ms 23940 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 73 ms 13940 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 420 KB Output is correct
20 Correct 32 ms 6236 KB Output is correct
21 Correct 127 ms 23888 KB Output is correct
22 Correct 125 ms 24112 KB Output is correct
23 Correct 136 ms 23380 KB Output is correct
24 Correct 142 ms 23888 KB Output is correct
25 Correct 50 ms 13904 KB Output is correct
26 Correct 54 ms 13908 KB Output is correct
27 Correct 153 ms 23800 KB Output is correct
28 Correct 122 ms 23992 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 6 ms 1372 KB Output is correct
9 Correct 130 ms 23860 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 122 ms 23816 KB Output is correct
14 Correct 1 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 57 ms 13904 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 30 ms 6336 KB Output is correct
22 Correct 119 ms 23836 KB Output is correct
23 Correct 121 ms 23840 KB Output is correct
24 Correct 129 ms 23764 KB Output is correct
25 Correct 50 ms 13904 KB Output is correct
26 Correct 52 ms 13904 KB Output is correct
27 Correct 117 ms 23936 KB Output is correct
28 Correct 132 ms 23888 KB Output is correct
29 Correct 51 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 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 31 ms 6408 KB Output is correct
5 Correct 122 ms 23824 KB Output is correct
6 Correct 122 ms 23948 KB Output is correct
7 Correct 133 ms 23812 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 29 ms 6236 KB Output is correct
10 Correct 118 ms 23888 KB Output is correct
11 Correct 122 ms 23888 KB Output is correct
12 Correct 143 ms 23888 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 32 ms 6224 KB Output is correct
17 Correct 115 ms 23740 KB Output is correct
18 Correct 122 ms 23888 KB Output is correct
19 Correct 116 ms 23952 KB Output is correct
20 Correct 142 ms 23916 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1192 KB Output is correct
7 Correct 115 ms 23872 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1340 KB Output is correct
13 Correct 123 ms 23940 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 73 ms 13940 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 420 KB Output is correct
20 Correct 32 ms 6236 KB Output is correct
21 Correct 127 ms 23888 KB Output is correct
22 Correct 125 ms 24112 KB Output is correct
23 Correct 136 ms 23380 KB Output is correct
24 Correct 142 ms 23888 KB Output is correct
25 Correct 50 ms 13904 KB Output is correct
26 Correct 54 ms 13908 KB Output is correct
27 Correct 153 ms 23800 KB Output is correct
28 Correct 122 ms 23992 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1372 KB Output is correct
37 Correct 130 ms 23860 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1372 KB Output is correct
41 Correct 122 ms 23816 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 57 ms 13904 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 30 ms 6336 KB Output is correct
50 Correct 119 ms 23836 KB Output is correct
51 Correct 121 ms 23840 KB Output is correct
52 Correct 129 ms 23764 KB Output is correct
53 Correct 50 ms 13904 KB Output is correct
54 Correct 52 ms 13904 KB Output is correct
55 Correct 117 ms 23936 KB Output is correct
56 Correct 132 ms 23888 KB Output is correct
57 Correct 51 ms 13908 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 2 ms 860 KB Output is correct
61 Correct 56 ms 13912 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 29 ms 6264 KB Output is correct
66 Correct 56 ms 13996 KB Output is correct
67 Correct 51 ms 13904 KB Output is correct
68 Correct 50 ms 13908 KB Output is correct
69 Correct 52 ms 13956 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1192 KB Output is correct
7 Correct 115 ms 23872 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1340 KB Output is correct
13 Correct 123 ms 23940 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 73 ms 13940 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 420 KB Output is correct
20 Correct 32 ms 6236 KB Output is correct
21 Correct 127 ms 23888 KB Output is correct
22 Correct 125 ms 24112 KB Output is correct
23 Correct 136 ms 23380 KB Output is correct
24 Correct 142 ms 23888 KB Output is correct
25 Correct 50 ms 13904 KB Output is correct
26 Correct 54 ms 13908 KB Output is correct
27 Correct 153 ms 23800 KB Output is correct
28 Correct 122 ms 23992 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1372 KB Output is correct
37 Correct 130 ms 23860 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1372 KB Output is correct
41 Correct 122 ms 23816 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 57 ms 13904 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 30 ms 6336 KB Output is correct
50 Correct 119 ms 23836 KB Output is correct
51 Correct 121 ms 23840 KB Output is correct
52 Correct 129 ms 23764 KB Output is correct
53 Correct 50 ms 13904 KB Output is correct
54 Correct 52 ms 13904 KB Output is correct
55 Correct 117 ms 23936 KB Output is correct
56 Correct 132 ms 23888 KB Output is correct
57 Correct 51 ms 13908 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 31 ms 6408 KB Output is correct
62 Correct 122 ms 23824 KB Output is correct
63 Correct 122 ms 23948 KB Output is correct
64 Correct 133 ms 23812 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 29 ms 6236 KB Output is correct
67 Correct 118 ms 23888 KB Output is correct
68 Correct 122 ms 23888 KB Output is correct
69 Correct 143 ms 23888 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 32 ms 6224 KB Output is correct
74 Correct 115 ms 23740 KB Output is correct
75 Correct 122 ms 23888 KB Output is correct
76 Correct 116 ms 23952 KB Output is correct
77 Correct 142 ms 23916 KB Output is correct
78 Correct 1 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 2 ms 860 KB Output is correct
81 Correct 56 ms 13912 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 29 ms 6264 KB Output is correct
86 Correct 56 ms 13996 KB Output is correct
87 Correct 51 ms 13904 KB Output is correct
88 Correct 50 ms 13908 KB Output is correct
89 Correct 52 ms 13956 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 960 KB Output is correct
93 Correct 72 ms 13960 KB Output is correct
94 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
95 Halted 0 ms 0 KB -