Submission #859006

#	Time	Username	Problem	Language	Result	Execution time	Memory
859006		thinknoexit	Rarest Insects (IOI22_insects)	C++17	10 / 100	185 ms	600 KiB

insects

#include <bits/stdc++.h>
#include "insects.h"
using namespace std;
using ll = long long;
int in[2020];
int min_cardinality(int n) {
    int type = 0;
    for (int i = 0;i < n;i++) {
        move_inside(i);
        if (press_button() == 2) {
            move_outside(i);
        }
        else in[i] = 1, type++;
    }
    for (int i = 0;i < n;i++) if (in[i] == 1) move_outside(i);
    if (type == 1) return n;
    int mxans = n / type;
    for (int i = 1;i <= mxans;i++) {
        int cnt = 0;
        for (int j = 0;j < n;j++) {
            if (in[j]) continue;
            move_inside(j);
            if (press_button() == 2) {
                move_outside(j);
            }
            else in[j] = i + 1, cnt++;
        }
        if (cnt != type) return i;
        for (int j = 0;j < n;j++) if (in[j] == i + 1) move_outside(j);
    }
    // n , n , n
    /*
        ans <= n / type
        ans <= n - mx
    */

}

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:37:1: warning: control reaches end of non-void function [-Wreturn-type]
   37 | }
      | ^

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