Submission #1191469

#	Time	Username	Problem	Language	Result	Execution time	Memory
1191469		drakozs	Rarest Insects (IOI22_insects)	C++20	47.50 / 100	61 ms	436 KiB

insects

#include "insects.h"
#include<bits/stdc++.h>

using namespace std;

int min_cardinality(int N) {
	vector<int> temp;
	int d = 0;
	for (int i = 0; i < N; i++){
		move_inside(i);
		int count = press_button();
		if (count > 1){
			move_outside(i);
		}
		else{
			temp.push_back(i);
			d++;
		}
	}
	for (int i = 0; i < temp.size(); i++){
		move_outside(temp[i]);
	}
	
	int ans = N;
	int l = 1, r = N, mid;
	while(l <= r){
		mid = (r - l) / 2 + l;
		vector<int> allIn;
		for (int i = 0; i < N; i++){
			move_inside(i);
			int count = press_button();
			if (count > mid){
				move_outside(i);
			}
			else{
				allIn.push_back(i);
				if (allIn.size() == d * mid) break;
			}
		}
		if (allIn.size() == d * mid){
			ans = mid;
			l = mid + 1;
		}
		else{
			r = mid - 1;
		}
		for (int i = 0; i < allIn.size(); i++){
			move_outside(allIn[i]);
		}
	}
	return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 22.5 / 75