제출 #956901

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
956901		n1k	Rarest Insects (IOI22_insects)	C++17	53.16 / 100	116 ms	1884 KiB

insects

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

using namespace std;

int n;

int min_cardinality(int N) {
	n = N;

	vector<int> v;
	set<int> in, out;

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

	mt19937 mt(4732012);
	int lb = 0, rb = n / v.size();
	while(lb<rb){
		int mb = (lb+rb+1)/2;

		vector<int> order(out.begin(), out.end());
		shuffle(order.begin(), order.end(), mt);

		for(auto x:order){
			if(v.size()*mb==in.size())
				break;

			out.extract(x);
			in.insert(x);
			move_inside(x);

			if(press_button()>mb+1){
				move_outside(x);
				in.extract(x);
				out.insert(x);
			}
		}

		if(v.size()*mb==in.size()){
			lb=mb;
		}else{
			rb=mb-1;
			for(auto x:in){
				move_outside(x);
				out.insert(x);
			}
			in.clear();
		}
	}

	return lb+1;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 28.16 / 75