Submission #838720

# Submission time Handle Problem Language Result Execution time Memory
838720 2023-08-27T16:01:07 Z taher Rarest Insects (IOI22_insects) C++17
57.28 / 100
104 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; 
  }
  
  if ((int) roots.size() <= 6) {
    int res = 1234567;
    
    for (int i = 0; i < (int) roots.size(); i++) {
      move_outside(roots[i]); 
    }
    for (int it = 0; it < (int) roots.size(); it++) {
      move_inside(roots[it]);
      int cnt = 1;
      
      for (int j = 0; j < n; j++) {
        if (j == roots[it]) {
          continue; 
        }
        
        move_inside(j);
        if (press_button() == 2) {
          cnt++; 
        }
        move_outside(j);
      }
      
      res = min(res, cnt);
      move_outside(roots[it]); 
    }
    return res;  
  }  
  
  int base = (int) roots.size();
 
  auto Check = [&](int mid) {
    vector<int> tmp;
    for (int i = 0; i < n; i++) {
      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; 
    }
    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;
}
# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 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 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 6 ms 260 KB Output is correct
9 Correct 6 ms 296 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 7 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 3 ms 208 KB Output is correct
16 Correct 3 ms 300 KB Output is correct
17 Correct 4 ms 208 KB Output is correct
18 Correct 6 ms 336 KB Output is correct
19 Correct 4 ms 208 KB Output is correct
20 Correct 5 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 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 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 6 ms 260 KB Output is correct
9 Correct 6 ms 296 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 7 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 3 ms 208 KB Output is correct
16 Correct 3 ms 300 KB Output is correct
17 Correct 4 ms 208 KB Output is correct
18 Correct 6 ms 336 KB Output is correct
19 Correct 4 ms 208 KB Output is correct
20 Correct 5 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 8 ms 208 KB Output is correct
24 Correct 6 ms 208 KB Output is correct
25 Correct 17 ms 208 KB Output is correct
26 Correct 27 ms 304 KB Output is correct
27 Correct 23 ms 260 KB Output is correct
28 Correct 7 ms 208 KB Output is correct
29 Correct 38 ms 208 KB Output is correct
30 Correct 33 ms 208 KB Output is correct
31 Correct 33 ms 208 KB Output is correct
32 Correct 19 ms 296 KB Output is correct
33 Correct 14 ms 304 KB Output is correct
34 Correct 27 ms 304 KB Output is correct
35 Correct 19 ms 304 KB Output is correct
36 Correct 35 ms 432 KB Output is correct
37 Correct 24 ms 208 KB Output is correct
38 Correct 23 ms 208 KB Output is correct
39 Correct 17 ms 208 KB Output is correct
40 Correct 10 ms 208 KB Output is correct
41 Correct 7 ms 312 KB Output is correct
# 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 0 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 13 ms 208 KB Output is correct
8 Correct 14 ms 208 KB Output is correct
9 Correct 45 ms 292 KB Output is correct
10 Partially correct 50 ms 308 KB Output is partially correct
11 Correct 41 ms 208 KB Output is correct
12 Correct 18 ms 208 KB Output is correct
13 Partially correct 72 ms 208 KB Output is partially correct
14 Partially correct 72 ms 208 KB Output is partially correct
15 Partially correct 83 ms 208 KB Output is partially correct
16 Partially correct 41 ms 208 KB Output is partially correct
17 Partially correct 36 ms 304 KB Output is partially correct
18 Partially correct 45 ms 328 KB Output is partially correct
19 Partially correct 43 ms 296 KB Output is partially correct
20 Partially correct 46 ms 300 KB Output is partially correct
21 Partially correct 47 ms 308 KB Output is partially correct
22 Partially correct 48 ms 304 KB Output is partially correct
23 Partially correct 49 ms 284 KB Output is partially correct
24 Correct 34 ms 220 KB Output is correct
25 Correct 21 ms 256 KB Output is correct
26 Correct 11 ms 208 KB Output is correct
27 Correct 37 ms 308 KB Output is correct
28 Correct 29 ms 208 KB Output is correct
29 Partially correct 36 ms 208 KB Output is partially correct
30 Partially correct 39 ms 296 KB Output is partially correct
31 Partially correct 27 ms 432 KB Output is partially correct
32 Partially correct 50 ms 308 KB Output is partially correct
33 Partially correct 58 ms 208 KB Output is partially correct
34 Partially correct 57 ms 208 KB Output is partially correct
35 Partially correct 42 ms 304 KB Output is partially correct
36 Partially correct 39 ms 208 KB Output is partially correct
37 Partially correct 44 ms 284 KB Output is partially correct
38 Partially correct 53 ms 316 KB Output is partially correct
39 Correct 37 ms 316 KB Output is correct
40 Correct 33 ms 300 KB Output is correct
41 Partially correct 41 ms 304 KB Output is partially correct
42 Partially correct 34 ms 328 KB Output is partially correct
43 Partially correct 25 ms 208 KB Output is partially correct
44 Partially correct 104 ms 292 KB Output is partially correct
45 Correct 43 ms 208 KB Output is correct
46 Correct 20 ms 208 KB Output is correct
47 Correct 24 ms 332 KB Output is correct
48 Correct 21 ms 208 KB Output is correct