Submission #1230518

#	Time	Username	Problem	Language	Result	Execution time	Memory
1230518		VMaksimoski008	Rarest Insects (IOI22_insects)	C++20	0 / 100	7 ms	432 KiB

insects

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

int min_cardinality(int n) {
    vector<int> st, vis(n), a(n);
    st.push_back(0);
    
    int id = 1;
    for(int i=1; i<n; i++) {
        int l=0, r=st.size()-1, p=-1;

        move_inside(i);
        while(l <= r) {
          int mid = (l + r) / 2;
          for(int j=0; j<n; j++) {
              if(vis[j]) move_outside(j);
          }
          
          for(int j=mid; j<st.size(); j++) {
              vis[st[j]] = 1;
              move_inside(st[j]);
          }

          if(press_button() == 2) p = mid, l = mid + 1;
          else r = mid - 1;
        }
        move_outside(i);

        if(p == -1) {
          st.push_back(i);
          a[i] = id++;
        } else {
          a[i] = a[st[p]];
        }
    }

    vector<int> cnt(n);
    for(int i=0; i<n; i++) cnt[a[i]]++;

    int mn = n;
    for(int i=0; i<n; i++)
      if(cnt[i]) mn = min(mn, cnt[i]);

    return mn;
}

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