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Submission #944687

# Submission time Handle Problem Language Result Execution time Memory
944687 2024-03-13T03:33:34 Z nguyentunglam Rarest Insects (IOI22_insects) C++17
50.03 / 100
 104 ms 856 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;
  for(int i = 0; i < n; i++) {
    move_inside(i);
    if (press_button() == 1) {
      ++type;
      in[i] = 1;
    }
    else move_outside(i);
  }

  int l = 1, r = n / type, ans = 1;
  int cur = 1;

  while (l < r) {
    int mid = (l + r) / 2 + 1;
    assert(cur <= mid);
    vector<int> last_added;
    int last = cur;
    for(int i = 0; i < n; i++) if (!in[i]) {
      in[i] = 1;
      move_inside(i);
      int nxt = press_button();
      if (nxt > mid) {
        move_outside(i);
        in[i] = 0;
      }
      else {
        cur = nxt;
        last_added.push_back(i);
      }
    }
    int total = 0;
    for(int i = 0; i < n; i++) total += in[i];
    if (cur == mid && mid * type == total) {
      l = mid;
    }
    else {
      r = mid - 1;
      for(auto &j : last_added) {
        move_outside(j);
        in[j] = 0;
      }
      cur = last;
    }
  }
  return l;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:20:28: warning: unused variable 'ans' [-Wunused-variable]
   20 |   int l = 1, r = n / type, ans = 1;
      |                            ^~~

Subtask #1
10.0 / 10.0

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

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 8 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 7 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 3 ms 344 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 344 KB Output is correct
23 Correct 21 ms 600 KB Output is correct
24 Correct 4 ms 344 KB Output is correct
25 Correct 15 ms 600 KB Output is correct
26 Correct 19 ms 600 KB Output is correct
27 Correct 45 ms 440 KB Output is correct
28 Correct 4 ms 344 KB Output is correct
29 Correct 45 ms 600 KB Output is correct
30 Correct 30 ms 600 KB Output is correct
31 Correct 16 ms 600 KB Output is correct
32 Correct 17 ms 444 KB Output is correct
33 Correct 15 ms 600 KB Output is correct
34 Correct 15 ms 600 KB Output is correct
35 Correct 12 ms 440 KB Output is correct
36 Correct 21 ms 600 KB Output is correct
37 Correct 15 ms 440 KB Output is correct
38 Correct 16 ms 440 KB Output is correct
39 Correct 14 ms 600 KB Output is correct
40 Correct 6 ms 440 KB Output is correct
41 Correct 5 ms 344 KB Output is correct

Subtask #3
25.03 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 344 KB Output is correct
6 Correct 0 ms 356 KB Output is correct
7 Correct 30 ms 696 KB Output is correct
8 Correct 7 ms 344 KB Output is correct
9 Correct 26 ms 676 KB Output is correct
10 Partially correct 40 ms 676 KB Output is partially correct
11 Partially correct 103 ms 596 KB Output is partially correct
12 Correct 15 ms 344 KB Output is correct
13 Partially correct 104 ms 440 KB Output is partially correct
14 Partially correct 67 ms 856 KB Output is partially correct
15 Partially correct 36 ms 344 KB Output is partially correct
16 Partially correct 31 ms 676 KB Output is partially correct
17 Partially correct 44 ms 700 KB Output is partially correct
18 Partially correct 35 ms 672 KB Output is partially correct
19 Partially correct 38 ms 676 KB Output is partially correct
20 Partially correct 33 ms 420 KB Output is partially correct
21 Partially correct 39 ms 600 KB Output is partially correct
22 Partially correct 44 ms 856 KB Output is partially correct
23 Partially correct 43 ms 428 KB Output is partially correct
24 Correct 21 ms 436 KB Output is correct
25 Correct 13 ms 704 KB Output is correct
26 Correct 12 ms 344 KB Output is correct
27 Correct 29 ms 416 KB Output is correct
28 Correct 24 ms 444 KB Output is correct
29 Correct 29 ms 600 KB Output is correct
30 Correct 29 ms 420 KB Output is correct
31 Partially correct 46 ms 676 KB Output is partially correct
32 Partially correct 44 ms 424 KB Output is partially correct
33 Partially correct 55 ms 704 KB Output is partially correct
34 Partially correct 59 ms 680 KB Output is partially correct
35 Correct 38 ms 592 KB Output is correct
36 Correct 22 ms 592 KB Output is correct
37 Partially correct 39 ms 680 KB Output is partially correct
38 Partially correct 33 ms 692 KB Output is partially correct
39 Correct 25 ms 432 KB Output is correct
40 Correct 39 ms 440 KB Output is correct
41 Correct 32 ms 676 KB Output is correct
42 Correct 25 ms 600 KB Output is correct
43 Partially correct 19 ms 356 KB Output is partially correct
44 Partially correct 94 ms 428 KB Output is partially correct
45 Correct 27 ms 424 KB Output is correct
46 Correct 13 ms 344 KB Output is correct
47 Correct 15 ms 344 KB Output is correct
48 Correct 14 ms 344 KB Output is correct