oj.uz

Submission #838736

# Submission time Handle Problem Language Result Execution time Memory
838736 2023-08-27T16:20:26 Z taher Rarest Insects (IOI22_insects) C++17
99.89 / 100
 47 ms 432 KB 
#include "insects.h"
#include <bits/stdc++.h>

using namespace std;

int min_cardinality(int N) {
  int n = N;
  vector<int> in(n);
  
  vector<int> roots;
  for (int i = 0; i < n; i++) {
    move_inside(i);
    if (press_button() == 2) {
      move_outside(i); 
    } else {
      roots.push_back(i);
      in[i] = true; 
    }
  }
  assert((int) roots.size() > 0);
  
  if ((int) roots.size() == 1) {
    return n; 
  }
  
  int base = (int) roots.size();
  vector<int> possible;
  for (int i = 0; i < n; i++) {
    possible.push_back(i); 
  }
 
  auto Check = [&](int mid) {
    vector<int> tmp;
    for (int id = 0; id < (int) possible.size(); id++) {
      int i = possible[id];
      if (in[i]) {
        continue; 
      }
      move_inside(i);
      if (press_button() > mid) {
        move_outside(i);
      } else {
        tmp.push_back(i);
        roots.push_back(i);
        in[i] = true;
      } 
    }
    if ((int) roots.size() == base * mid) {
      return true;
    }
    possible = roots;
    for (int i = 0; i < (int) tmp.size(); i++) {
      roots.pop_back(); 
      in[tmp[i]] = false;
      move_outside(tmp[i]);
    }
    return false;
  };
  
  int low = 2;
  int high = n / (int) roots.size();
  
  while (low <= high) {
    int mid = low + (high - low) / 2;
    
    if (Check(mid)) {
      low = mid + 1;
    } else  {
      high = mid - 1; 
    } 
  }
  --low;
  return low;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 3 ms 208 KB Output is correct
7 Correct 2 ms 300 KB Output is correct
8 Correct 4 ms 208 KB Output is correct
9 Correct 4 ms 208 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 4 ms 208 KB Output is correct
13 Correct 4 ms 208 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 3 ms 208 KB Output is correct
18 Correct 4 ms 208 KB Output is correct
19 Correct 3 ms 208 KB Output is correct
20 Correct 3 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 3 ms 208 KB Output is correct
7 Correct 2 ms 300 KB Output is correct
8 Correct 4 ms 208 KB Output is correct
9 Correct 4 ms 208 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 4 ms 208 KB Output is correct
13 Correct 4 ms 208 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 3 ms 208 KB Output is correct
18 Correct 4 ms 208 KB Output is correct
19 Correct 3 ms 208 KB Output is correct
20 Correct 3 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct
23 Correct 8 ms 208 KB Output is correct
24 Correct 5 ms 208 KB Output is correct
25 Correct 19 ms 208 KB Output is correct
26 Correct 23 ms 260 KB Output is correct
27 Correct 21 ms 308 KB Output is correct
28 Correct 6 ms 336 KB Output is correct
29 Correct 18 ms 208 KB Output is correct
30 Correct 18 ms 208 KB Output is correct
31 Correct 20 ms 208 KB Output is correct
32 Correct 17 ms 208 KB Output is correct
33 Correct 20 ms 304 KB Output is correct
34 Correct 21 ms 288 KB Output is correct
35 Correct 17 ms 208 KB Output is correct
36 Correct 20 ms 304 KB Output is correct
37 Correct 18 ms 208 KB Output is correct
38 Correct 17 ms 236 KB Output is correct
39 Correct 18 ms 304 KB Output is correct
40 Correct 10 ms 208 KB Output is correct
41 Correct 7 ms 208 KB Output is correct

Subtask #3
74.89 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 14 ms 208 KB Output is correct
8 Correct 12 ms 208 KB Output is correct
9 Correct 39 ms 208 KB Output is correct
10 Correct 40 ms 208 KB Output is correct
11 Correct 19 ms 208 KB Output is correct
12 Correct 22 ms 316 KB Output is correct
13 Correct 42 ms 428 KB Output is correct
14 Correct 41 ms 300 KB Output is correct
15 Correct 34 ms 308 KB Output is correct
16 Correct 40 ms 316 KB Output is correct
17 Correct 38 ms 208 KB Output is correct
18 Correct 40 ms 316 KB Output is correct
19 Partially correct 34 ms 208 KB Output is partially correct
20 Correct 39 ms 316 KB Output is correct
21 Correct 38 ms 208 KB Output is correct
22 Correct 39 ms 336 KB Output is correct
23 Correct 27 ms 292 KB Output is correct
24 Correct 29 ms 312 KB Output is correct
25 Correct 21 ms 308 KB Output is correct
26 Correct 13 ms 208 KB Output is correct
27 Correct 43 ms 304 KB Output is correct
28 Correct 40 ms 312 KB Output is correct
29 Partially correct 39 ms 288 KB Output is partially correct
30 Partially correct 45 ms 208 KB Output is partially correct
31 Correct 32 ms 308 KB Output is correct
32 Correct 47 ms 424 KB Output is correct
33 Correct 20 ms 308 KB Output is correct
34 Correct 31 ms 288 KB Output is correct
35 Partially correct 35 ms 296 KB Output is partially correct
36 Partially correct 38 ms 316 KB Output is partially correct
37 Correct 38 ms 320 KB Output is correct
38 Correct 39 ms 300 KB Output is correct
39 Correct 44 ms 432 KB Output is correct
40 Correct 35 ms 328 KB Output is correct
41 Partially correct 38 ms 208 KB Output is partially correct
42 Partially correct 42 ms 284 KB Output is partially correct
43 Correct 8 ms 208 KB Output is correct
44 Correct 30 ms 208 KB Output is correct
45 Correct 35 ms 312 KB Output is correct
46 Correct 17 ms 208 KB Output is correct
47 Correct 18 ms 312 KB Output is correct
48 Correct 18 ms 304 KB Output is correct