Submission #1233196

#	Time	Username	Problem	Language	Result	Execution time	Memory
1233196		nicolo_010	드문 곤충 (IOI22_insects)	C++20	0 / 100	2 ms	408 KiB

insects

#include <bits/stdc++.h>
#include "insects.h"
using namespace std;
template <typename T>
using v = vector<T>;
using pii = pair<int, int>;
using ll = long long;
#define rep(i, k, n) for (int i = k; i < n; i++)

int min_cardinality(int N) {
	int in = 0;
	int d;
	v<int> gr;
	set<int> s;
	rep(b, 1, 2) {
		rep(i, 0, N) {
			move_inside(i);
			int a = press_button();
			if (a > b) {
				move_outside(i);
				s.insert(i);
			}
			else {
				in++;
			}
		}
		if (b == 1) d = in;
	}
	int l = 1, r = N/d;
	int ans = 1;
	while (l <= r) {
		int m = (l+r)/2;
		v<int> getout;
		//cout << m << ": ";
		for (auto x : s) {
			if (in == m*d) continue;
			move_inside(x);
			//cout << i << " ";
			int a = press_button();
			if (a > m)  {
				move_outside(x);
				//cout << 0 << ", ";
			}
			else {
				getout.push_back(x);
				in++;
				//cout << 1 << ", ";
			}
		} 
		if (in == m*d) {
			ans = m;
			l = m+1;
			for (auto x : getout) s.insert(x);
		}
		else {
			r = m-1;
			for (auto x : getout) {
				move_outside(x);
				in--;
			}
		}
		//cout << endl;
	}
	return ans;
}

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