oj.uz

Submission #524074

# Submission time Handle Problem Language Result Execution time Memory
524074 2022-02-08T15:21:02 Z Turkhuu Connecting Supertrees (IOI20_supertrees) C++17
56 / 100
 196 ms 27436 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>

using namespace std;

struct dsu{
  int n;
  vector<int> size, parent;
 
  dsu(int _n) : n(_n), size(n, 1), parent(n){
    iota(parent.begin(), parent.end(), 0);
  }
 
  int get(int a){
    return a == parent[a] ? a : parent[a] = get(parent[a]);
  }
 
  bool unite(int b, int a){
    a = get(a);
    b = get(b);
    if(a == b){
      return 0;
    }
    size[b] += size[a];
    parent[a] = b;
    return 1;
  }
};

int construct(vector<vector<int>> a){
	int n = a.size();
  vector<vector<int>> ans(n, vector<int>(n, 0));
	vector<vector<int>> v1(n),v2(n);
	for(int i = 0; i < n; i++){
		for(int j = i + 1; j < n; j++){
			if(a[i][j] == 1){
				v1[i].push_back(j);
				v1[j].push_back(i);

			} else if(a[i][j] == 2){
				v2[i].push_back(j);
        v2[j].push_back(i);
			} else if(a[i][j] == 3){
        return 0;
      }
		}
	}
  dsu s(n);
  for(int i = 0; i < n; i++){
    if(s.parent[i] == i){
      for(int j = 0; j < n; j++){
        for(int k : v1[i]){
          if(a[k][j] != a[i][j]){
            return 0;
          }
          ans[i][k] = 1;
          ans[k][i] = 1;
          s.unite(i, k);
        }
      }
    }
  }
  vector<bool> b(n, false);
  for(int i = 0; i < n; i++){
    if(b[s.parent[i]]){
      continue;
    }
    b[i] = true;
    int cur = i;
    for(int j : v2[i]){
      if(s.parent[j] != j){
        if(a[i][s.parent[j]] != 2){
          return 0;
        }
        continue;
      }
      for(int k : v2[j]){
        if((a[i][k] != 1 && s.parent[k] == i) || (a[i][k] == 1 && s.parent[k] != i)){
          return 0;
        }
      }
      ans[cur][j] = 1;
      ans[j][cur] = 1;
      b[j] = true;
      cur = j;
    }
    if(cur == i){
      continue;
    }
    if(ans[i][cur]){
      return 0;
    }
    ans[i][cur] = 1;
    ans[cur][i] = 1;
  }
	build(ans);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 7 ms 1436 KB Output is correct
7 Correct 185 ms 27436 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 7 ms 1436 KB Output is correct
7 Correct 185 ms 27436 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 7 ms 1228 KB Output is correct
13 Correct 170 ms 23312 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 972 KB Output is correct
17 Correct 79 ms 16176 KB Output is correct
18 Correct 0 ms 292 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 47 ms 6248 KB Output is correct
21 Correct 181 ms 23836 KB Output is correct
22 Correct 179 ms 23428 KB Output is correct
23 Correct 190 ms 25368 KB Output is correct
24 Correct 166 ms 23564 KB Output is correct
25 Correct 73 ms 13920 KB Output is correct
26 Correct 66 ms 13380 KB Output is correct
27 Correct 183 ms 26408 KB Output is correct
28 Correct 166 ms 23440 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 292 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 292 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 7 ms 1256 KB Output is correct
9 Correct 170 ms 22704 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 288 KB Output is correct
12 Correct 8 ms 1416 KB Output is correct
13 Correct 181 ms 26788 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Incorrect 1 ms 292 KB Answer gives possible 1 while actual possible 0
16 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 45 ms 6256 KB Output is correct
5 Correct 184 ms 23868 KB Output is correct
6 Correct 168 ms 23364 KB Output is correct
7 Correct 196 ms 25516 KB Output is correct
8 Correct 1 ms 288 KB Output is correct
9 Correct 42 ms 6268 KB Output is correct
10 Correct 172 ms 23920 KB Output is correct
11 Correct 169 ms 23364 KB Output is correct
12 Correct 176 ms 26420 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 44 ms 6236 KB Output is correct
17 Correct 167 ms 23840 KB Output is correct
18 Correct 184 ms 23876 KB Output is correct
19 Correct 177 ms 23484 KB Output is correct
20 Correct 168 ms 23456 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 7 ms 1436 KB Output is correct
7 Correct 185 ms 27436 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 7 ms 1228 KB Output is correct
13 Correct 170 ms 23312 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 972 KB Output is correct
17 Correct 79 ms 16176 KB Output is correct
18 Correct 0 ms 292 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 47 ms 6248 KB Output is correct
21 Correct 181 ms 23836 KB Output is correct
22 Correct 179 ms 23428 KB Output is correct
23 Correct 190 ms 25368 KB Output is correct
24 Correct 166 ms 23564 KB Output is correct
25 Correct 73 ms 13920 KB Output is correct
26 Correct 66 ms 13380 KB Output is correct
27 Correct 183 ms 26408 KB Output is correct
28 Correct 166 ms 23440 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 1 ms 292 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 292 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 7 ms 1256 KB Output is correct
37 Correct 170 ms 22704 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 288 KB Output is correct
40 Correct 8 ms 1416 KB Output is correct
41 Correct 181 ms 26788 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Incorrect 1 ms 292 KB Answer gives possible 1 while actual possible 0
44 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 7 ms 1436 KB Output is correct
7 Correct 185 ms 27436 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 7 ms 1228 KB Output is correct
13 Correct 170 ms 23312 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 972 KB Output is correct
17 Correct 79 ms 16176 KB Output is correct
18 Correct 0 ms 292 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 47 ms 6248 KB Output is correct
21 Correct 181 ms 23836 KB Output is correct
22 Correct 179 ms 23428 KB Output is correct
23 Correct 190 ms 25368 KB Output is correct
24 Correct 166 ms 23564 KB Output is correct
25 Correct 73 ms 13920 KB Output is correct
26 Correct 66 ms 13380 KB Output is correct
27 Correct 183 ms 26408 KB Output is correct
28 Correct 166 ms 23440 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 1 ms 292 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 292 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 7 ms 1256 KB Output is correct
37 Correct 170 ms 22704 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 288 KB Output is correct
40 Correct 8 ms 1416 KB Output is correct
41 Correct 181 ms 26788 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Incorrect 1 ms 292 KB Answer gives possible 1 while actual possible 0
44 Halted 0 ms 0 KB -