#include "mushrooms.h"
using namespace std;
int x, y, q, l = 3, c, ans, z = 146;
vector <vector <int>> v(2);
vector <int> u;
int count_mushrooms(int n)
{
if (n == 2)
return 2 - use_machine({0, 1});
v[0].push_back(0);
v[use_machine({0, 1})].push_back(1);
v[use_machine({0, 2})].push_back(2);
if (v[1].size() >= 2)
x = 1;
for (int i = 3; i < min(n - 1, 2 * z + 1); i += 2)
{
q = use_machine({v[x][0], i, v[x][1], i + 1});
v[(q / 2) ^ x].push_back(i);
v[(q % 2) ^ x].push_back(i + 1);
l = i + 2;
}
if (v[1].size() > v[0].size())
y = 1;
ans = v[0].size();
while (l < n)
{
u = {v[y][0]};
c = 0;
while (l < n && c < z)
{
u.push_back(l++);
u.push_back(v[y][++c]);
}
q = use_machine(u) / 2;
ans += (y ? q : c - q);
}
return ans;
}
