Submission #628897

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
628897	2022-08-13T19:48:13 Z	600Mihnea	Rarest Insects (IOI22_insects)	C++17	99.89 / 100	65 ms	552 KB

insects

#include "insects.h"
#include <bits/stdc++.h>

using namespace std;

set<int> s;
set<int> invalid;

void add(int i) {
  assert(!s.count(i));
  s.insert(i);
  move_inside(i);
}

void del(int i) {
  assert(s.count(i));
  s.erase(i);
  move_outside(i);
}

int get() {
  return press_button();
}

int get_s_cardinality() {
  int sol = 0;
  for (auto &x : s) {
    if (!invalid.count(x)) {
      sol++;
    }
  }
  return sol;
}

int min_cardinality(int n) {
  int cnt_distinct = 0;
  for (int i = 0; i < n; i++) {
    add(i);
    if (get() == 1) {
      cnt_distinct++;
    } else {
      del(i);
    }
  }

  for (auto &i : s) {
    invalid.insert(i);
  }

  int low = 1, high = n, sol = 1;
  while (low <= high) {
    assert(low >= 1);
    {
      int cnt_valid = 0;
      for (int i = 0; i < n; i++) {
        if (invalid.count(i)) continue;
        cnt_valid++;
      }
      high = min(high, cnt_valid / cnt_distinct);
    }

    if (!(low <= high)) break;

    int mid = (low + high) / 2;
    vector<int> added_now, wait_now;
    for (int i = 0; i < n; i++) {
      if (invalid.count(i)) continue;
      add(i);
      if (get() > mid + sol) {
        del(i);
        wait_now.push_back(i);
      } else {
        added_now.push_back(i);
      }
    }
    if (get_s_cardinality() == mid * cnt_distinct) {
      for (auto &i : added_now) {
        invalid.insert(i);
      }
      int delta = mid;
      low = mid + 1;

      sol += delta;
      low -= delta;
      high -= delta;

    } else {
      for (auto &i : added_now) {
        del(i);
      }
      for (auto &i : wait_now) {
        invalid.insert(i);
      }
      high = mid - 1;
    }
  }
  return sol;
}

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	0 ms	208 KB	Output is correct
5	Correct	1 ms	208 KB	Output is correct
6	Correct	4 ms	300 KB	Output is correct
7	Correct	1 ms	208 KB	Output is correct
8	Correct	7 ms	300 KB	Output is correct
9	Correct	5 ms	304 KB	Output is correct
10	Correct	5 ms	300 KB	Output is correct
11	Correct	3 ms	208 KB	Output is correct
12	Correct	7 ms	304 KB	Output is correct
13	Correct	7 ms	308 KB	Output is correct
14	Correct	7 ms	304 KB	Output is correct
15	Correct	3 ms	300 KB	Output is correct
16	Correct	5 ms	300 KB	Output is correct
17	Correct	4 ms	208 KB	Output is correct
18	Correct	5 ms	300 KB	Output is correct
19	Correct	6 ms	300 KB	Output is correct
20	Correct	5 ms	308 KB	Output is correct
21	Correct	3 ms	208 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	0 ms	208 KB	Output is correct
5	Correct	1 ms	208 KB	Output is correct
6	Correct	4 ms	300 KB	Output is correct
7	Correct	1 ms	208 KB	Output is correct
8	Correct	7 ms	300 KB	Output is correct
9	Correct	5 ms	304 KB	Output is correct
10	Correct	5 ms	300 KB	Output is correct
11	Correct	3 ms	208 KB	Output is correct
12	Correct	7 ms	304 KB	Output is correct
13	Correct	7 ms	308 KB	Output is correct
14	Correct	7 ms	304 KB	Output is correct
15	Correct	3 ms	300 KB	Output is correct
16	Correct	5 ms	300 KB	Output is correct
17	Correct	4 ms	208 KB	Output is correct
18	Correct	5 ms	300 KB	Output is correct
19	Correct	6 ms	300 KB	Output is correct
20	Correct	5 ms	308 KB	Output is correct
21	Correct	3 ms	208 KB	Output is correct
22	Correct	3 ms	208 KB	Output is correct
23	Correct	40 ms	368 KB	Output is correct
24	Correct	8 ms	336 KB	Output is correct
25	Correct	31 ms	336 KB	Output is correct
26	Correct	33 ms	276 KB	Output is correct
27	Correct	17 ms	324 KB	Output is correct
28	Correct	8 ms	312 KB	Output is correct
29	Correct	30 ms	428 KB	Output is correct
30	Correct	24 ms	304 KB	Output is correct
31	Correct	28 ms	336 KB	Output is correct
32	Correct	25 ms	288 KB	Output is correct
33	Correct	34 ms	296 KB	Output is correct
34	Correct	24 ms	292 KB	Output is correct
35	Correct	16 ms	320 KB	Output is correct
36	Correct	31 ms	336 KB	Output is correct
37	Correct	29 ms	300 KB	Output is correct
38	Correct	19 ms	316 KB	Output is correct
39	Correct	25 ms	308 KB	Output is correct
40	Correct	12 ms	340 KB	Output is correct
41	Correct	8 ms	328 KB	Output is correct

Subtask #3
74.89 / 75.0

#	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	0 ms	208 KB	Output is correct
5	Correct	1 ms	208 KB	Output is correct
6	Correct	1 ms	288 KB	Output is correct
7	Correct	57 ms	392 KB	Output is correct
8	Correct	18 ms	456 KB	Output is correct
9	Correct	62 ms	432 KB	Output is correct
10	Correct	44 ms	484 KB	Output is correct
11	Correct	51 ms	296 KB	Output is correct
12	Correct	23 ms	316 KB	Output is correct
13	Correct	46 ms	412 KB	Output is correct
14	Correct	59 ms	368 KB	Output is correct
15	Correct	64 ms	408 KB	Output is correct
16	Correct	54 ms	400 KB	Output is correct
17	Correct	56 ms	536 KB	Output is correct
18	Correct	61 ms	408 KB	Output is correct
19	Partially correct	63 ms	432 KB	Output is partially correct
20	Correct	51 ms	420 KB	Output is correct
21	Correct	54 ms	380 KB	Output is correct
22	Correct	53 ms	360 KB	Output is correct
23	Correct	42 ms	328 KB	Output is correct
24	Correct	47 ms	300 KB	Output is correct
25	Correct	17 ms	400 KB	Output is correct
26	Correct	22 ms	320 KB	Output is correct
27	Correct	64 ms	404 KB	Output is correct
28	Correct	27 ms	552 KB	Output is correct
29	Partially correct	57 ms	540 KB	Output is partially correct
30	Partially correct	59 ms	404 KB	Output is partially correct
31	Correct	61 ms	400 KB	Output is correct
32	Correct	58 ms	448 KB	Output is correct
33	Correct	55 ms	336 KB	Output is correct
34	Correct	48 ms	296 KB	Output is correct
35	Partially correct	63 ms	424 KB	Output is partially correct
36	Partially correct	33 ms	456 KB	Output is partially correct
37	Correct	48 ms	404 KB	Output is correct
38	Correct	49 ms	408 KB	Output is correct
39	Correct	65 ms	440 KB	Output is correct
40	Correct	60 ms	420 KB	Output is correct
41	Partially correct	29 ms	464 KB	Output is partially correct
42	Partially correct	45 ms	464 KB	Output is partially correct
43	Correct	7 ms	300 KB	Output is correct
44	Correct	40 ms	292 KB	Output is correct
45	Correct	54 ms	424 KB	Output is correct
46	Correct	24 ms	312 KB	Output is correct
47	Correct	31 ms	328 KB	Output is correct
48	Correct	22 ms	384 KB	Output is correct

Submission #628897

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 15.0 / 15.0

Subtask #3 74.89 / 75.0

Subtask #1
10.0 / 10.0

Subtask #2
15.0 / 15.0

Subtask #3
74.89 / 75.0