oj.uz

Submission #963854

# Submission time Handle Problem Language Result Execution time Memory
963854 2024-04-15T20:12:33 Z nguyentunglam Connecting Supertrees (IOI20_supertrees) C++17
56 / 100
 169 ms 24348 KB 
#include "supertrees.h"
#ifdef ngu
#include "grader.cpp"
#endif // ngu
#include <vector>
#include<bits/stdc++.h>
using namespace std;


int construct(std::vector<std::vector<int>> p) {
	int n = p.size();

  auto valid = [&] (vector<int> a, vector<int> b, int c) {
    for(int &j : a) for(int &k : b) if (p[j][k] != c) return false;
    return true;
  };

	vector<int> vis(n), arr;

  auto dfs = [&] (auto self, int u) -> void {
    vis[u] = 1;
    arr.push_back(u);
    for(int v = 0; v < n; v++) if (!vis[v] && p[u][v] == 1) self(self, v);
  };

	std::vector<std::vector<int>> answer(n, vector<int> (n));

  auto add = [&] (int u, int v) {
    answer[u][v] = answer[v][u] = 1;
  };

  vector<vector<int> > connected;

  for(int i = 0; i < n; i++) if (!vis[i]) {
    arr.clear();
    dfs(dfs, i);
    if (!valid(arr, arr, 1)) return 0;
    connected.push_back(arr);
    for(int j = 1; j < arr.size(); j++) {
      answer[arr[j]][arr[j - 1]] = answer[arr[j - 1]][arr[j]] = 1;
    }
  }

  for(int i = 0; i < n; i++) vis[i] = 0;

  for(auto &arr : connected) {
    for(auto &j : arr) for(int k = 0; k < n; k++) if (p[j][k] != p[arr[0]][k]) return 0;
  }

//   auto _dfs = [&] (auto self, int u) -> void {
//    vis[u] = 1;
//    arr.push_back(u);
//    for(int v = 0; v < n; v++) if (!vis[v] && p[u][v] == 1) self(self, v);
//  };

  auto _dfs = [&] (auto self, int u) -> void {
    vis[u] = 1;
    arr.push_back(u);
    for(int v = 0; v < connected.size(); v++) if (!vis[v] && p[connected[u][0]][connected[v][0]] == 2) {
      self(self, v);
    }
  };

  for(int i = 0; i < connected.size(); i++) if (!vis[i]) {
    arr.clear();
    for(int &k : arr) for(int &j : arr) if (j != k) {
      if (p[connected[k][0]][connected[j][0]] != 2) return 0;
    }
    _dfs(_dfs, i);
    if (arr.size() == 1) continue;
    if (arr.size() < 3) return 0;
//    for(int &j : g) cout << j << " "; cout << endl;
    for(int i = 1; i < arr.size(); i++) {
      add(connected[arr[i]][0], connected[arr[i - 1]][0]);
    }
    add(connected[arr[0]][0], connected[arr.back()][0]);
  }

  build(answer);

  for(int i = 0; i < n; i++) {
    auto expand = [&] (int u) {

    };
  }

	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for(int j = 1; j < arr.size(); j++) {
      |                    ~~^~~~~~~~~~~~
supertrees.cpp:64:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |   for(int i = 0; i < connected.size(); i++) if (!vis[i]) {
      |                  ~~^~~~~~~~~~~~~~~~~~
supertrees.cpp:73:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(int i = 1; i < arr.size(); i++) {
      |                    ~~^~~~~~~~~~~~
supertrees.cpp:82:10: warning: variable 'expand' set but not used [-Wunused-but-set-variable]
   82 |     auto expand = [&] (int u) {
      |          ^~~~~~
supertrees.cpp: In instantiation of 'construct(std::vector<std::vector<int> >)::<lambda(auto:24, int)> [with auto:24 = construct(std::vector<std::vector<int> >)::<lambda(auto:24, int)>]':
supertrees.cpp:69:17:   required from here
supertrees.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |     for(int v = 0; v < connected.size(); v++) if (!vis[v] && p[connected[u][0]][connected[v][0]] == 2) {
      |                    ~~^~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 7 ms 1368 KB Output is correct
7 Correct 153 ms 24064 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 7 ms 1368 KB Output is correct
7 Correct 153 ms 24064 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1184 KB Output is correct
13 Correct 154 ms 24048 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 932 KB Output is correct
17 Correct 67 ms 14252 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 44 ms 6340 KB Output is correct
21 Correct 166 ms 24080 KB Output is correct
22 Correct 160 ms 24036 KB Output is correct
23 Correct 169 ms 23976 KB Output is correct
24 Correct 155 ms 23940 KB Output is correct
25 Correct 65 ms 14160 KB Output is correct
26 Correct 64 ms 14160 KB Output is correct
27 Correct 155 ms 24148 KB Output is correct
28 Correct 153 ms 24192 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 504 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 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 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 7 ms 1372 KB Output is correct
9 Correct 152 ms 24076 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 9 ms 1416 KB Output is correct
13 Correct 154 ms 24144 KB Output is correct
14 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

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 39 ms 6196 KB Output is correct
5 Correct 157 ms 24052 KB Output is correct
6 Correct 157 ms 24348 KB Output is correct
7 Correct 159 ms 23924 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 40 ms 6420 KB Output is correct
10 Correct 155 ms 24064 KB Output is correct
11 Correct 160 ms 24148 KB Output is correct
12 Correct 162 ms 24200 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 40 ms 6388 KB Output is correct
17 Correct 163 ms 22748 KB Output is correct
18 Correct 153 ms 24148 KB Output is correct
19 Correct 155 ms 23472 KB Output is correct
20 Correct 156 ms 23724 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 7 ms 1368 KB Output is correct
7 Correct 153 ms 24064 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1184 KB Output is correct
13 Correct 154 ms 24048 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 932 KB Output is correct
17 Correct 67 ms 14252 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 44 ms 6340 KB Output is correct
21 Correct 166 ms 24080 KB Output is correct
22 Correct 160 ms 24036 KB Output is correct
23 Correct 169 ms 23976 KB Output is correct
24 Correct 155 ms 23940 KB Output is correct
25 Correct 65 ms 14160 KB Output is correct
26 Correct 64 ms 14160 KB Output is correct
27 Correct 155 ms 24148 KB Output is correct
28 Correct 153 ms 24192 KB Output is correct
29 Correct 1 ms 504 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 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 0 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 152 ms 24076 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 9 ms 1416 KB Output is correct
41 Correct 154 ms 24144 KB Output is correct
42 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 7 ms 1368 KB Output is correct
7 Correct 153 ms 24064 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1184 KB Output is correct
13 Correct 154 ms 24048 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 932 KB Output is correct
17 Correct 67 ms 14252 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 44 ms 6340 KB Output is correct
21 Correct 166 ms 24080 KB Output is correct
22 Correct 160 ms 24036 KB Output is correct
23 Correct 169 ms 23976 KB Output is correct
24 Correct 155 ms 23940 KB Output is correct
25 Correct 65 ms 14160 KB Output is correct
26 Correct 64 ms 14160 KB Output is correct
27 Correct 155 ms 24148 KB Output is correct
28 Correct 153 ms 24192 KB Output is correct
29 Correct 1 ms 504 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 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 0 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 152 ms 24076 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 9 ms 1416 KB Output is correct
41 Correct 154 ms 24144 KB Output is correct
42 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -