답안 #944749

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
944749 2024-03-13T04:21:27 Z nguyentunglam 드문 곤충 (IOI22_insects) C++17
99.9 / 100
52 ms 1116 KB
#include "insects.h"
#include<bits/stdc++.h>
using namespace std;

const int NN = 1e5 + 10;

bool in[NN];

mt19937 rng(10184104810471);

int rnd(int l, int r) {
  return l + rng() % (r - l + 1);
}

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;

  while (l <= r) {
    shuffle(candidate.begin(), candidate.end(), rng);
    int mid = type <= 30 ? (l + r + 1) / 2 : (l + r) / 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;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 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 596 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 3 ms 600 KB Output is correct
10 Correct 4 ms 600 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 2 ms 600 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 3 ms 600 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 600 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 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 596 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 3 ms 600 KB Output is correct
10 Correct 4 ms 600 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 2 ms 600 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 3 ms 600 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 600 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 13 ms 600 KB Output is correct
24 Correct 4 ms 344 KB Output is correct
25 Correct 12 ms 600 KB Output is correct
26 Correct 13 ms 452 KB Output is correct
27 Correct 10 ms 596 KB Output is correct
28 Correct 4 ms 344 KB Output is correct
29 Correct 12 ms 856 KB Output is correct
30 Correct 12 ms 340 KB Output is correct
31 Correct 14 ms 600 KB Output is correct
32 Correct 18 ms 600 KB Output is correct
33 Correct 11 ms 344 KB Output is correct
34 Correct 13 ms 448 KB Output is correct
35 Correct 12 ms 344 KB Output is correct
36 Correct 12 ms 600 KB Output is correct
37 Correct 13 ms 600 KB Output is correct
38 Correct 11 ms 600 KB Output is correct
39 Correct 13 ms 600 KB Output is correct
40 Correct 7 ms 604 KB Output is correct
41 Correct 4 ms 344 KB Output is correct
# 결과 실행 시간 메모리 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 344 KB Output is correct
7 Correct 26 ms 704 KB Output is correct
8 Correct 10 ms 436 KB Output is correct
9 Correct 26 ms 848 KB Output is correct
10 Correct 31 ms 600 KB Output is correct
11 Correct 24 ms 716 KB Output is correct
12 Correct 12 ms 704 KB Output is correct
13 Correct 26 ms 1116 KB Output is correct
14 Correct 31 ms 436 KB Output is correct
15 Correct 25 ms 856 KB Output is correct
16 Correct 32 ms 856 KB Output is correct
17 Correct 34 ms 856 KB Output is correct
18 Correct 52 ms 700 KB Output is correct
19 Correct 33 ms 704 KB Output is correct
20 Correct 27 ms 956 KB Output is correct
21 Correct 31 ms 452 KB Output is correct
22 Correct 29 ms 944 KB Output is correct
23 Correct 28 ms 688 KB Output is correct
24 Correct 19 ms 848 KB Output is correct
25 Correct 14 ms 932 KB Output is correct
26 Correct 8 ms 1112 KB Output is correct
27 Correct 33 ms 600 KB Output is correct
28 Correct 36 ms 604 KB Output is correct
29 Correct 27 ms 608 KB Output is correct
30 Correct 30 ms 604 KB Output is correct
31 Correct 26 ms 708 KB Output is correct
32 Correct 30 ms 700 KB Output is correct
33 Correct 33 ms 604 KB Output is correct
34 Correct 30 ms 856 KB Output is correct
35 Partially correct 34 ms 600 KB Output is partially correct
36 Partially correct 30 ms 848 KB Output is partially correct
37 Correct 24 ms 1112 KB Output is correct
38 Correct 23 ms 612 KB Output is correct
39 Correct 26 ms 1108 KB Output is correct
40 Correct 35 ms 612 KB Output is correct
41 Partially correct 25 ms 856 KB Output is partially correct
42 Partially correct 33 ms 860 KB Output is partially correct
43 Correct 6 ms 600 KB Output is correct
44 Correct 19 ms 1112 KB Output is correct
45 Correct 28 ms 948 KB Output is correct
46 Correct 13 ms 856 KB Output is correct
47 Correct 12 ms 600 KB Output is correct
48 Correct 14 ms 856 KB Output is correct