Submission #828664

#	Time	Username	Problem	Language	Result	Execution time	Memory
828664		Minindu206	Counting Mushrooms (IOI20_mushrooms)	C++14	0 / 100	2 ms	336 KiB

mushrooms

#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;
int count_mushrooms(int n)
{
	vector<int> posa, posb, pos;
	int acnt = 1, bcnt = 0, cnt, ans = 0;
	posa.push_back(0);
	for (int i = 1; i < min(200, n); i++)
	{
		int cur = use_machine({0, i});
		if (cur == 0)
		{
			if (acnt < 10)
				posa.push_back(i);
			acnt++;
		}
		else
		{
			if (bcnt < 10)
				posb.push_back(i);
			bcnt++;
			ans++;
		}
	}
	if (n <= 200)
	{
		return n - ans;
	}
	if (acnt >= bcnt)
		pos = posa, cnt = acnt;
	else
		pos = posb, cnt = bcnt;

	int i = 200;

	vector<int> chk;
	while (i < n)
	{
		chk.clear();
		int cur = 0;
		while (i < min(n, i + cnt))
		{
			chk.push_back(i);
			chk.push_back(pos[cur]);
			cur++;
			i++;
		}
		int ncur = use_machine(chk);
		if (acnt >= bcnt)
			ans += (ncur + 1) / 2;
		else
			ans += (cur - ((ncur + 1) / 2));
	}
	return n - ans;
}

• Subtask 1: 0 / 100