#include "mushrooms.h"
#include<bits/stdc++.h>
using namespace std;
#define mp make_pair
#define INF 10000000
#define MOD 1000000007
#define MID ((l+r)/2)
#define HASHMOD 2305843009213693951
#define ll long long
#define ull unsigned long long
#define F first
#define S second
typedef pair<ll, ll> ii;
typedef pair<ii, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef map<int, int> mii;
#define EPS 1e-6
#define FOR(i,n) for(int i=0;i<((int)(n));i++)
#define FORi(i,a,b) for(int i=((int)(a));i<((int)(b));i++)
#define FOA(v, a) for(auto v : a)
int count_mushrooms(int n) {
int ans=1;
int x = use_machine({0,1});
if(!x){
ans++; // both are A
FORi(i,2,n){
if(i+1<n){
int a = use_machine({0, i, 1, i+1});
if(a==0) ans+=2;
else if(a==1 || a==2) ans++;
i++;
}
else{
ans+= 1 - use_machine({0,i});
}
}
}
else{
if(n==2) return 1;
// 0 is A, 1 is B
// query 2, if A then use 0, i, 2, i+1
// if B then use 1, i, 2, i+1
int x2 = use_machine({0,2});
int fpos=0;
if(!x2) ans++, fpos=0; // 2 is a, use 0
else fpos=1;
FORi(i,3,n){
if(i+1<n){
int a = use_machine({fpos, i, 2, i+1});
if((a==0 && fpos==0) || (a==3 && fpos==1)) ans+=2;
else if(a==1 || a==2) ans++;
i++;
}
else{
ans+= 1 - use_machine({0,i});
}
}
}
return ans;
}
