oj.uz

Submission #839267

# Submission time Handle Problem Language Result Execution time Memory
839267 2023-08-29T12:40:35 Z epicci23 Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 187 ms 22224 KB 
#include "supertrees.h"
#include "bits/stdc++.h"
using namespace std;
#define pb push_back
const int N = 1005;

int par[N];
int siz[N];

int find(int a)
{
  if(par[a]==a) return a;
  return par[a]=find(par[a]);
}

void unite(int a,int b)
{
  a=find(a),b=find(b);
  if(a==b) return;
  if(siz[a]>siz[b]) swap(a,b);
  siz[b]+=siz[a];
  par[a]=b;
}

int construct(vector<vector<int>> p) {
	iota(par,par+N,0LL);
	fill(siz,siz+N,1LL);
    
    int n = p[0].size();
    vector<vector<int>> g(n,vector<int>(n,0));
    for(int i=0;i<n;i++)
    	for(int j=0;j<n;j++)
    		if(p[i][j]) unite(i,j);
    
    for(int i=0;i<n;i++)
    	for(int j=0;j<n;j++)
    		if(!p[i][j] && find(i)==find(j))
    			return 0;

    vector<int> no[n];
    for(int i=0;i<n;i++) no[find(i)].pb(i);

    for(int xd=0;xd<n;xd++)
    {
      if(no[xd].size()<=1) continue;
      int m = no[xd].size();
      vector<vector<int>> v[m];
      set<int> s;
      vector<int> deg(m,0);
      for(int i=0;i<m;i++)
      {
      	for(int j=i+1;j<m;j++)
      	{
      	  if(i==j) continue;
          if(p[i][j]==2)
          {
            s.insert(i);
            s.insert(j);
            deg[i]++;
            deg[j]++;
          }
      	}
      }
      int k=s.size();
      if(k==2) return 0;
      for(int x:s) if(deg[x]!=k-1) return 0;
      if(k>0)
      {
       int a=*s.begin();
       int b=*s.rbegin();
       g[a][b]=g[b][a]=1;
      }
      for(int i=1;i<m;i++) 
      	g[no[xd][i]][no[xd][i-1]]=g[no[xd][i-1]][no[xd][i]]=1;
    }
    build(g);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 158 ms 22144 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 158 ms 22144 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 161 ms 22152 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 75 ms 12236 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 5800 KB Output is correct
21 Correct 159 ms 22208 KB Output is correct
22 Correct 160 ms 22092 KB Output is correct
23 Correct 166 ms 22204 KB Output is correct
24 Correct 160 ms 22144 KB Output is correct
25 Correct 66 ms 12236 KB Output is correct
26 Correct 65 ms 12256 KB Output is correct
27 Correct 165 ms 22204 KB Output is correct
28 Correct 160 ms 22196 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 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 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 7 ms 1236 KB Output is correct
9 Correct 155 ms 22224 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 184 ms 22140 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 804 KB Output is correct
17 Correct 77 ms 12324 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Incorrect 18 ms 3412 KB Answer gives possible 0 while actual possible 1
22 Halted 0 ms 0 KB -

Subtask #4
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 42 ms 5800 KB Output is correct
5 Correct 161 ms 22128 KB Output is correct
6 Correct 158 ms 22168 KB Output is correct
7 Correct 187 ms 22220 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Incorrect 17 ms 3404 KB Answer gives possible 0 while actual possible 1
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 158 ms 22144 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 161 ms 22152 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 75 ms 12236 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 5800 KB Output is correct
21 Correct 159 ms 22208 KB Output is correct
22 Correct 160 ms 22092 KB Output is correct
23 Correct 166 ms 22204 KB Output is correct
24 Correct 160 ms 22144 KB Output is correct
25 Correct 66 ms 12236 KB Output is correct
26 Correct 65 ms 12256 KB Output is correct
27 Correct 165 ms 22204 KB Output is correct
28 Correct 160 ms 22196 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 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 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 155 ms 22224 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 184 ms 22140 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 804 KB Output is correct
45 Correct 77 ms 12324 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Incorrect 18 ms 3412 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 158 ms 22144 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 161 ms 22152 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 75 ms 12236 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 5800 KB Output is correct
21 Correct 159 ms 22208 KB Output is correct
22 Correct 160 ms 22092 KB Output is correct
23 Correct 166 ms 22204 KB Output is correct
24 Correct 160 ms 22144 KB Output is correct
25 Correct 66 ms 12236 KB Output is correct
26 Correct 65 ms 12256 KB Output is correct
27 Correct 165 ms 22204 KB Output is correct
28 Correct 160 ms 22196 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 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 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 155 ms 22224 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 184 ms 22140 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 804 KB Output is correct
45 Correct 77 ms 12324 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Incorrect 18 ms 3412 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -