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Submission #944722

# Submission time Handle Problem Language Result Execution time Memory
944722 2024-03-13T04:10:59 Z nguyentunglam Rarest Insects (IOI22_insects) C++17
99.79 / 100
 35 ms 1112 KB 
#include "insects.h"
#include<bits/stdc++.h>
using namespace std;

const int NN = 1e5 + 10;

bool in[NN];

int min_cardinality(int n) {
  int type = 0;
  vector<int> candidate;
  for(int i = 0; i < n; i++) {
    move_inside(i);
    if (press_button() == 1) {
      ++type;
      in[i] = 1;
    }
    else {
      move_outside(i);
      candidate.push_back(i);
    }
  }

  int l = 2, r = n / type, ans = 1;
  int cur = 1;
//  cout << type << endl;

  while (l <= r) {
    int mid = (l + r + 1) / 2;
    assert(cur <= mid);
    int last = cur;
    for(auto &i : candidate) {
      move_inside(i);
      int nxt = press_button();
      if (nxt > mid) {
        move_outside(i);
        in[i] = 0;
      }
      else {
        cur = nxt;
        in[i] = 1;
      }
    }
    int total = 0;
    for(int i = 0; i < n; i++) total += in[i];
    vector<int> _candidate;

    if (cur == mid && mid * type == total) {
      for(auto &i : candidate) if (!in[i]) _candidate.push_back(i);
      l = mid + 1;
      ans = mid;
    }
    else {
      for(auto &i : candidate) if (in[i]) {
        _candidate.push_back(i);
        move_outside(i);
        in[i] = 0;
      }
      r = mid - 1;
      cur = last;
    }
    candidate = _candidate;
  }
  return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 596 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 3 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 3 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 600 KB Output is correct
14 Correct 2 ms 448 KB Output is correct
15 Correct 3 ms 344 KB Output is correct
16 Correct 3 ms 600 KB Output is correct
17 Correct 4 ms 600 KB Output is correct
18 Correct 3 ms 600 KB Output is correct
19 Correct 3 ms 600 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 524 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 596 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 3 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 3 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 600 KB Output is correct
14 Correct 2 ms 448 KB Output is correct
15 Correct 3 ms 344 KB Output is correct
16 Correct 3 ms 600 KB Output is correct
17 Correct 4 ms 600 KB Output is correct
18 Correct 3 ms 600 KB Output is correct
19 Correct 3 ms 600 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 524 KB Output is correct
23 Correct 15 ms 856 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 13 ms 708 KB Output is correct
26 Correct 15 ms 600 KB Output is correct
27 Correct 12 ms 856 KB Output is correct
28 Correct 4 ms 600 KB Output is correct
29 Correct 13 ms 600 KB Output is correct
30 Correct 14 ms 704 KB Output is correct
31 Correct 15 ms 600 KB Output is correct
32 Correct 17 ms 652 KB Output is correct
33 Correct 14 ms 600 KB Output is correct
34 Correct 15 ms 680 KB Output is correct
35 Correct 16 ms 692 KB Output is correct
36 Correct 14 ms 696 KB Output is correct
37 Correct 14 ms 604 KB Output is correct
38 Correct 14 ms 696 KB Output is correct
39 Correct 15 ms 704 KB Output is correct
40 Correct 8 ms 856 KB Output is correct
41 Correct 4 ms 344 KB Output is correct

Subtask #3
74.79 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 356 KB Output is correct
7 Correct 30 ms 452 KB Output is correct
8 Correct 9 ms 344 KB Output is correct
9 Correct 28 ms 852 KB Output is correct
10 Correct 32 ms 956 KB Output is correct
11 Correct 22 ms 600 KB Output is correct
12 Correct 14 ms 600 KB Output is correct
13 Correct 33 ms 700 KB Output is correct
14 Correct 28 ms 856 KB Output is correct
15 Correct 31 ms 452 KB Output is correct
16 Correct 35 ms 704 KB Output is correct
17 Correct 32 ms 860 KB Output is correct
18 Correct 25 ms 604 KB Output is correct
19 Correct 28 ms 708 KB Output is correct
20 Correct 19 ms 444 KB Output is correct
21 Correct 28 ms 600 KB Output is correct
22 Correct 26 ms 856 KB Output is correct
23 Correct 26 ms 692 KB Output is correct
24 Correct 20 ms 600 KB Output is correct
25 Correct 13 ms 704 KB Output is correct
26 Correct 10 ms 444 KB Output is correct
27 Correct 28 ms 452 KB Output is correct
28 Correct 26 ms 708 KB Output is correct
29 Correct 25 ms 856 KB Output is correct
30 Correct 27 ms 600 KB Output is correct
31 Correct 26 ms 700 KB Output is correct
32 Correct 27 ms 452 KB Output is correct
33 Partially correct 27 ms 600 KB Output is partially correct
34 Partially correct 27 ms 684 KB Output is partially correct
35 Correct 27 ms 672 KB Output is correct
36 Correct 32 ms 696 KB Output is correct
37 Correct 28 ms 600 KB Output is correct
38 Correct 25 ms 700 KB Output is correct
39 Correct 29 ms 700 KB Output is correct
40 Correct 29 ms 600 KB Output is correct
41 Correct 27 ms 608 KB Output is correct
42 Correct 34 ms 1112 KB Output is correct
43 Correct 8 ms 696 KB Output is correct
44 Correct 19 ms 592 KB Output is correct
45 Correct 28 ms 448 KB Output is correct
46 Correct 18 ms 600 KB Output is correct
47 Correct 12 ms 448 KB Output is correct
48 Correct 14 ms 604 KB Output is correct