Submission #643641

#	Time	Username	Problem	Language	Result	Execution time	Memory
643641		Vanilla	Rarest Insects (IOI22_insects)	C++17	25 / 100	164 ms	300 KiB

insects

#include <bits/stdc++.h>
#include "insects.h"
using namespace std;

int min_cardinality(int n) {
  vector <bool> vis (n);
  int tp = 0;
  for (int i = 0; i < n; i++){
    move_inside(i);
    if (press_button() == 2) {
      move_outside(i);
    }
    else {
      vis[i] = 1;
      tp++;
    }
  }
  if (tp * tp <= n) {
    for (int i = 0; i < n; i++) if (vis[i]) move_outside(i);
    vector <int> type(n, -1);
    int l = 0;
    int rs = 1e9;
    for (int i = 0; i < n; i++){
      if (type[i] != -1) continue;
      int k = 1;
      type[i] = l++;
      move_inside(i);
      for (int j = 0; j < n; j++){
        if (i == j || type[j] != -1) continue;
        move_inside(j);
        // cout << i << " " << j << " " << press_button() << "\n";
        if (press_button() == 2) type[j] = type[i], k++;
        move_outside(j);
      }
      move_outside(i);
      rs = min(rs, k);
    }
    return rs;
  }
  for (int i = 2; i <= n + 1; i++){
    int d = 0;
    for (int j = 0; j < n; j++){
      if (vis[j]) continue;
      move_inside(j);
      if (press_button() == i + 1) {
        move_outside(j);
      }
      else {
        vis[j] = 1;
        d++;
      }
    }
    if (d != tp) return i-1;
  }
  return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 0 / 75