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Submission #627945

# Submission time Handle Problem Language Result Execution time Memory
627945 2022-08-13T01:28:13 Z lunchbox Rarest Insects (IOI22_insects) C++17
100 / 100
 65 ms 336 KB 
#include <bits/stdc++.h>
using namespace std;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

typedef vector<int> vi;

#ifdef LOCAL
void move_inside(int i);
void move_outside(int i);
int press_button();
#else
#include "insects.h"
#endif

int min_cardinality(int n) {
  int c = 0;
  vi in(n), p(n);
  iota(p.begin(), p.end(), 0);
  for (int i = 0; i < n; i++) {
    move_inside(i);
    if (press_button() == 1) {
      c++;
      in[i] = 1;
    } else
      move_outside(i);
  }
  int low = 2, hi = n / c, sz = 0, ans = 1;
  while (low <= hi) {
    int t = (low + hi) / 2;
    vi v;
    shuffle(p.begin(), p.end(), rng);
    for (int i = 0; i < n; i++) {
      if (in[p[i]])
        continue;
      move_inside(p[i]);
      if (press_button() > t) {
        move_outside(p[i]);
        v.push_back(p[i]);
      } else
        sz++;
      if (c + sz == t * c) {
        for (int j = i + 1; j < n; j++)
          if (!in[p[j]])
            v.push_back(p[j]);
        break;
      }
    }
    if (c + sz == t * c) {
      fill(in.begin(), in.end(), 1);
      for (int i : v)
        in[i] = 0;
      ans = t;
      low = t + 1;
    } else {
      hi = t - 1;
      if (low <= hi) {
        for (int i : v)
          in[i] = 1;
        for (int i = 0; i < n; i++)
          if (!in[i]) {
            move_outside(i);
            sz--;
          }
      }
    }
  }
  return ans;
}

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 1 ms 208 KB Output is correct
6 Correct 5 ms 300 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 6 ms 208 KB Output is correct
9 Correct 6 ms 208 KB Output is correct
10 Correct 6 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 4 ms 300 KB Output is correct
14 Correct 4 ms 300 KB Output is correct
15 Correct 3 ms 336 KB Output is correct
16 Correct 3 ms 208 KB Output is correct
17 Correct 6 ms 208 KB Output is correct
18 Correct 6 ms 208 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 304 KB Output is correct
22 Correct 3 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 1 ms 208 KB Output is correct
6 Correct 5 ms 300 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 6 ms 208 KB Output is correct
9 Correct 6 ms 208 KB Output is correct
10 Correct 6 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 4 ms 300 KB Output is correct
14 Correct 4 ms 300 KB Output is correct
15 Correct 3 ms 336 KB Output is correct
16 Correct 3 ms 208 KB Output is correct
17 Correct 6 ms 208 KB Output is correct
18 Correct 6 ms 208 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 304 KB Output is correct
22 Correct 3 ms 208 KB Output is correct
23 Correct 19 ms 208 KB Output is correct
24 Correct 11 ms 208 KB Output is correct
25 Correct 18 ms 296 KB Output is correct
26 Correct 24 ms 292 KB Output is correct
27 Correct 18 ms 208 KB Output is correct
28 Correct 8 ms 208 KB Output is correct
29 Correct 28 ms 300 KB Output is correct
30 Correct 22 ms 208 KB Output is correct
31 Correct 26 ms 208 KB Output is correct
32 Correct 24 ms 292 KB Output is correct
33 Correct 25 ms 208 KB Output is correct
34 Correct 22 ms 208 KB Output is correct
35 Correct 22 ms 304 KB Output is correct
36 Correct 26 ms 208 KB Output is correct
37 Correct 21 ms 208 KB Output is correct
38 Correct 35 ms 208 KB Output is correct
39 Correct 20 ms 208 KB Output is correct
40 Correct 17 ms 208 KB Output is correct
41 Correct 8 ms 208 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 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 1 ms 208 KB Output is correct
7 Correct 29 ms 312 KB Output is correct
8 Correct 14 ms 208 KB Output is correct
9 Correct 33 ms 208 KB Output is correct
10 Correct 24 ms 208 KB Output is correct
11 Correct 43 ms 300 KB Output is correct
12 Correct 13 ms 304 KB Output is correct
13 Correct 58 ms 312 KB Output is correct
14 Correct 47 ms 304 KB Output is correct
15 Correct 34 ms 208 KB Output is correct
16 Correct 40 ms 296 KB Output is correct
17 Correct 47 ms 208 KB Output is correct
18 Correct 45 ms 300 KB Output is correct
19 Correct 48 ms 208 KB Output is correct
20 Correct 39 ms 208 KB Output is correct
21 Correct 33 ms 208 KB Output is correct
22 Correct 50 ms 300 KB Output is correct
23 Correct 40 ms 208 KB Output is correct
24 Correct 39 ms 296 KB Output is correct
25 Correct 36 ms 304 KB Output is correct
26 Correct 21 ms 208 KB Output is correct
27 Correct 40 ms 300 KB Output is correct
28 Correct 50 ms 208 KB Output is correct
29 Correct 43 ms 296 KB Output is correct
30 Correct 37 ms 308 KB Output is correct
31 Correct 44 ms 208 KB Output is correct
32 Correct 58 ms 304 KB Output is correct
33 Correct 50 ms 208 KB Output is correct
34 Correct 62 ms 208 KB Output is correct
35 Correct 37 ms 300 KB Output is correct
36 Correct 47 ms 304 KB Output is correct
37 Correct 36 ms 300 KB Output is correct
38 Correct 24 ms 300 KB Output is correct
39 Correct 36 ms 300 KB Output is correct
40 Correct 44 ms 300 KB Output is correct
41 Correct 22 ms 208 KB Output is correct
42 Correct 65 ms 300 KB Output is correct
43 Correct 15 ms 208 KB Output is correct
44 Correct 37 ms 304 KB Output is correct
45 Correct 31 ms 208 KB Output is correct
46 Correct 24 ms 296 KB Output is correct
47 Correct 27 ms 300 KB Output is correct
48 Correct 21 ms 300 KB Output is correct