제출 #1230535

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1230535		VMaksimoski008	드문 곤충 (IOI22_insects)	C++20	0 / 100	4 ms	412 KiB

insects

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

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

int min_cardinality(int n) {
    int l=1, r=n, ans=n;

    vector<int> v;
    for(int i=0; i<n; i++) {
      move_inside(i);
      if(press_button() == 2) {
        move_outside(i);
      } else {
        v.push_back(i);
      }
    }

    int diff = v.size();
    for(int u : v) move_outside(u);

    if(diff == 1) return n;
    if(diff == n) return 1;

    int in = 0;
    r = n / diff;
    vector<bool> vis(n);
    while(l <= r) {
        int mid = (l + r) / 2;

        for(int i=0; i<n; i++) {
          if(vis[i]) continue;
          move_inside(i);
          if(press_button() == mid + 1) {
            move_outside(i);
          } else in++, vis[i] = 1;
        }

        if(in == mid * diff) {
          ans = mid, l = mid + 1;
        }
        else {
          r = mid - 1;
          int nxt = (l + r) / 2;
          if(l > r) break;

          for(int i=0; i<n; i++)
            if(vis[i]) {
              move_outside(i);
              vis[i] = 0;
              if(press_button() <= nxt) break;
            }
          
          in = 0;
        }
    }

    return ans;
}

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