oj.uz

Submission #1078779

# Submission time Handle Problem Language Result Execution time Memory
1078779 2024-08-28T06:09:42 Z Muhammad_Aneeq Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 174 ms 24144 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));
		for (int i=0;i<n;i++)
			head[i]=-1;
		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])
						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]&&head[i]!=-1)
					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;
	return 0;
}

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:163:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  163 |    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 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 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 118 ms 23820 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 118 ms 23820 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 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 1400 KB Output is correct
13 Correct 124 ms 23820 KB Output is correct
14 Correct 1 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 58 ms 13908 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 6228 KB Output is correct
21 Correct 121 ms 23888 KB Output is correct
22 Correct 147 ms 23892 KB Output is correct
23 Correct 128 ms 23400 KB Output is correct
24 Correct 134 ms 23912 KB Output is correct
25 Correct 51 ms 14160 KB Output is correct
26 Correct 51 ms 14204 KB Output is correct
27 Correct 124 ms 24068 KB Output is correct
28 Correct 117 ms 23888 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 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 5 ms 1372 KB Output is correct
9 Correct 154 ms 23940 KB Output is correct
10 Correct 0 ms 436 KB Output is correct
11 Correct 1 ms 436 KB Output is correct
12 Correct 7 ms 1216 KB Output is correct
13 Correct 167 ms 24052 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 932 KB Output is correct
17 Correct 66 ms 14164 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 33 ms 6244 KB Output is correct
22 Correct 129 ms 23888 KB Output is correct
23 Correct 120 ms 23944 KB Output is correct
24 Correct 159 ms 24144 KB Output is correct
25 Correct 63 ms 14212 KB Output is correct
26 Correct 67 ms 14168 KB Output is correct
27 Correct 149 ms 24056 KB Output is correct
28 Correct 139 ms 23948 KB Output is correct
29 Correct 53 ms 14212 KB Output is correct

Subtask #4
35.0 / 35.0

# 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 34 ms 6308 KB Output is correct
5 Correct 149 ms 24052 KB Output is correct
6 Correct 155 ms 23928 KB Output is correct
7 Correct 142 ms 23928 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 35 ms 6344 KB Output is correct
10 Correct 131 ms 23924 KB Output is correct
11 Correct 174 ms 23940 KB Output is correct
12 Correct 123 ms 23892 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 432 KB Output is correct
16 Correct 32 ms 6232 KB Output is correct
17 Correct 127 ms 23944 KB Output is correct
18 Correct 168 ms 23928 KB Output is correct
19 Correct 124 ms 23956 KB Output is correct
20 Correct 154 ms 23936 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 118 ms 23820 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 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 1400 KB Output is correct
13 Correct 124 ms 23820 KB Output is correct
14 Correct 1 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 58 ms 13908 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 6228 KB Output is correct
21 Correct 121 ms 23888 KB Output is correct
22 Correct 147 ms 23892 KB Output is correct
23 Correct 128 ms 23400 KB Output is correct
24 Correct 134 ms 23912 KB Output is correct
25 Correct 51 ms 14160 KB Output is correct
26 Correct 51 ms 14204 KB Output is correct
27 Correct 124 ms 24068 KB Output is correct
28 Correct 117 ms 23888 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 1 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1372 KB Output is correct
37 Correct 154 ms 23940 KB Output is correct
38 Correct 0 ms 436 KB Output is correct
39 Correct 1 ms 436 KB Output is correct
40 Correct 7 ms 1216 KB Output is correct
41 Correct 167 ms 24052 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 5 ms 932 KB Output is correct
45 Correct 66 ms 14164 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 33 ms 6244 KB Output is correct
50 Correct 129 ms 23888 KB Output is correct
51 Correct 120 ms 23944 KB Output is correct
52 Correct 159 ms 24144 KB Output is correct
53 Correct 63 ms 14212 KB Output is correct
54 Correct 67 ms 14168 KB Output is correct
55 Correct 149 ms 24056 KB Output is correct
56 Correct 139 ms 23948 KB Output is correct
57 Correct 53 ms 14212 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 63 ms 14216 KB Output is correct
62 Correct 0 ms 432 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 33 ms 6232 KB Output is correct
66 Correct 54 ms 13996 KB Output is correct
67 Correct 72 ms 14164 KB Output is correct
68 Correct 55 ms 14100 KB Output is correct
69 Correct 78 ms 14068 KB Output is correct

Subtask #6
0 / 4.0

# 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 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 118 ms 23820 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 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 1400 KB Output is correct
13 Correct 124 ms 23820 KB Output is correct
14 Correct 1 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 58 ms 13908 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 6228 KB Output is correct
21 Correct 121 ms 23888 KB Output is correct
22 Correct 147 ms 23892 KB Output is correct
23 Correct 128 ms 23400 KB Output is correct
24 Correct 134 ms 23912 KB Output is correct
25 Correct 51 ms 14160 KB Output is correct
26 Correct 51 ms 14204 KB Output is correct
27 Correct 124 ms 24068 KB Output is correct
28 Correct 117 ms 23888 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 1 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1372 KB Output is correct
37 Correct 154 ms 23940 KB Output is correct
38 Correct 0 ms 436 KB Output is correct
39 Correct 1 ms 436 KB Output is correct
40 Correct 7 ms 1216 KB Output is correct
41 Correct 167 ms 24052 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 5 ms 932 KB Output is correct
45 Correct 66 ms 14164 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 33 ms 6244 KB Output is correct
50 Correct 129 ms 23888 KB Output is correct
51 Correct 120 ms 23944 KB Output is correct
52 Correct 159 ms 24144 KB Output is correct
53 Correct 63 ms 14212 KB Output is correct
54 Correct 67 ms 14168 KB Output is correct
55 Correct 149 ms 24056 KB Output is correct
56 Correct 139 ms 23948 KB Output is correct
57 Correct 53 ms 14212 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 34 ms 6308 KB Output is correct
62 Correct 149 ms 24052 KB Output is correct
63 Correct 155 ms 23928 KB Output is correct
64 Correct 142 ms 23928 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 35 ms 6344 KB Output is correct
67 Correct 131 ms 23924 KB Output is correct
68 Correct 174 ms 23940 KB Output is correct
69 Correct 123 ms 23892 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 1 ms 348 KB Output is correct
72 Correct 0 ms 432 KB Output is correct
73 Correct 32 ms 6232 KB Output is correct
74 Correct 127 ms 23944 KB Output is correct
75 Correct 168 ms 23928 KB Output is correct
76 Correct 124 ms 23956 KB Output is correct
77 Correct 154 ms 23936 KB Output is correct
78 Correct 1 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 860 KB Output is correct
81 Correct 63 ms 14216 KB Output is correct
82 Correct 0 ms 432 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 33 ms 6232 KB Output is correct
86 Correct 54 ms 13996 KB Output is correct
87 Correct 72 ms 14164 KB Output is correct
88 Correct 55 ms 14100 KB Output is correct
89 Correct 78 ms 14068 KB Output is correct
90 Correct 1 ms 348 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 856 KB Output is correct
93 Correct 53 ms 14196 KB Output is correct
94 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
95 Halted 0 ms 0 KB -