#include <bits/stdc++.h>
#include "mushrooms.h"
using namespace std;
int count_mushrooms(int n) {
int res = 1, prv = 0;
int j = -1;
for (int i = 2; i < n; i += 2) {
if (j == -1) {
int x = use_machine({0, i - 1, i});
if (x == 0) {
j = i - 1;
res += 2;
} else if (x == 1) {
if (use_machine({i - 1, i}) == 1) {
j = i - 1;
res++;
}
} else {
j = i;
res++;
}
} else {
int x = use_machine({0, i - 1, j, i});
if (x == 0) {
res += 2;
} else if (x == 1 || x == 2) {
res++;
}
}
}
if (n % 2 == 0) {
if (use_machine({0, n - 1}) == 0) {
res++;
}
}
return res;
}
