Submission #1078949

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1078949	2024-08-28 08:33:17	Gromp15	Rarest Insects (IOI22_insects)	C++17	70 / 100	85 ms	1104 KiB

insects

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#include <bits/stdc++.h>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#include "insects.h"
using namespace std;
template<typename T> bool ckmin(T &a, const T &b) { return a > b ? a = b, 1 : 0; }
template<typename T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }
int min_cardinality(int N) {
  vector<int> groups{0};
  move_inside(0);
  for (int i = 1; i < N; i++) {
    move_inside(i);
    if (press_button() > 1) move_outside(i);
    else groups.push_back(i);
  }
  for (int x : groups) move_outside(x);
  if (sz(groups) >= 45) {
    int l = 2, r = N / sz(groups), ans = 1;
    while (l <= r) {
      int mid = (l+r)/2;
      vector<int> got;
      for (int i = 0; i < N; i++) {
        move_inside(i);
        if (press_button() > mid) move_outside(i);
        else got.push_back(i);
      }
      if (sz(got) == mid * sz(groups)) ans = mid, l = mid+1;
      else r = mid-1;
      for (int x : got) move_outside(x);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 45 / 75