oj.uz

Submission #826954

# Submission time Handle Problem Language Result Execution time Memory
826954 2023-08-16T07:24:31 Z erray Connecting Supertrees (IOI20_supertrees) C++17
11 / 100
 156 ms 24036 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>

using namespace std;

#ifdef DEBUG
  #include "/home/eagle/ioi19/day2/debug.h"
#else 
  #define debug(...) void(37)
#endif

int construct(std::vector<std::vector<int>> P) {
	int N = int(P.size());
  vector<vector<int>> ans(N, vector<int>(N));
  auto Add = [&](int x, int y) {
    ans[x][y] = ans[y][x] = true;
  };
  bool bad = false;
  auto Group = [&](vector<int> s, function<bool(int)> connected) {
    int c = int(s.size());
    vector<bool> used(c);
    vector<vector<int>> gs;
    for (int i = 0; i < c; ++i) {
      if (used[i]) {
        continue;
      }
      gs.push_back({s[i]});
      for (int j = i + 1; j < c; ++j) {
        if (connected(P[s[i]][s[j]])) {
          if (used[j]) {
            bad = true;
          }
          used[j] = true;
          gs.back().push_back(s[j]);
        }
      }
      for (int j = 0; j < i; ++j) {
        bad |= connected(P[s[j]][s[i]]);
      }
      for (auto x : gs.back()) {
        for (auto y : gs.back()) {
          bad |= !connected(P[x][y]);
        }
      }
    }
    return gs;
  };
  vector<int> foo(N);
  iota(foo.begin(), foo.end(), 0);
  auto gs = Group(foo, [&](int x) {
    return x != 0;
  });
  debug(gs);
  for (auto g : gs) {
    bool two = false, three = false;
    for (auto x : g) {
      for (auto y : g) {
        two |= P[x][y] == 2;
        three |= P[x][y] == 3; 
      }
    }
    auto ones = Group(g, [&](int x) {
      return x == 1;
    });
    if ((two && three) || (two && int(ones.size()) < 3) || (three && int(ones.size()) < 4)) {
      bad = true;
      break;
    }
    for (auto o : ones) {
      for (int i = 0; i < int(o.size()) - 1; ++i) {
        Add(o[i], o[i + 1]);
      }
    }
    for (int i = 0; i < int(ones.size()) - 1; ++i) {
      Add(ones[i][0], ones[i + 1][0]);
    }
    if (two || three) {
      Add(ones[0][0], ones[2][0]);
    }
    if (three) {
      Add(ones[1][0], ones[3][0]);
    }
  }
  if (bad) {
    return 0;
  }
  build(ans);
	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 0 ms 296 KB Output is correct
3 Correct 0 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 7 ms 1204 KB Output is correct
7 Correct 151 ms 22276 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 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 7 ms 1204 KB Output is correct
7 Correct 151 ms 22276 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 300 KB Output is correct
12 Correct 6 ms 1236 KB Output is correct
13 Correct 143 ms 22356 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 5 ms 824 KB Output is correct
17 Correct 80 ms 12528 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 37 ms 6236 KB Output is correct
21 Correct 150 ms 24012 KB Output is correct
22 Correct 152 ms 24020 KB Output is correct
23 Correct 156 ms 24012 KB Output is correct
24 Correct 145 ms 24036 KB Output is correct
25 Incorrect 146 ms 23940 KB Answer gives possible 1 while actual possible 0
26 Halted 0 ms 0 KB -

Subtask #3
0 / 19.0

# 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 0 ms 212 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 296 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 6 ms 1236 KB Output is correct
9 Correct 148 ms 22472 KB Output is correct
10 Incorrect 0 ms 296 KB Too few ways to get from 2 to 3, should be 2 found 1
11 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 0 ms 212 KB Output is correct
4 Correct 36 ms 5896 KB Output is correct
5 Correct 151 ms 22280 KB Output is correct
6 Correct 149 ms 22336 KB Output is correct
7 Correct 151 ms 22256 KB Output is correct
8 Incorrect 0 ms 212 KB Too few ways to get from 2 to 3, should be 2 found 1
9 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 0 ms 296 KB Output is correct
3 Correct 0 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 7 ms 1204 KB Output is correct
7 Correct 151 ms 22276 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 300 KB Output is correct
12 Correct 6 ms 1236 KB Output is correct
13 Correct 143 ms 22356 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 5 ms 824 KB Output is correct
17 Correct 80 ms 12528 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 37 ms 6236 KB Output is correct
21 Correct 150 ms 24012 KB Output is correct
22 Correct 152 ms 24020 KB Output is correct
23 Correct 156 ms 24012 KB Output is correct
24 Correct 145 ms 24036 KB Output is correct
25 Incorrect 146 ms 23940 KB Answer gives possible 1 while actual possible 0
26 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 0 ms 296 KB Output is correct
3 Correct 0 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 7 ms 1204 KB Output is correct
7 Correct 151 ms 22276 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 300 KB Output is correct
12 Correct 6 ms 1236 KB Output is correct
13 Correct 143 ms 22356 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 5 ms 824 KB Output is correct
17 Correct 80 ms 12528 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 37 ms 6236 KB Output is correct
21 Correct 150 ms 24012 KB Output is correct
22 Correct 152 ms 24020 KB Output is correct
23 Correct 156 ms 24012 KB Output is correct
24 Correct 145 ms 24036 KB Output is correct
25 Incorrect 146 ms 23940 KB Answer gives possible 1 while actual possible 0
26 Halted 0 ms 0 KB -