#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;
//int count_mushrooms(int n) {
// std::vector<int> m;
// for (int i = 0; i < n; i++)
// m.push_back(i);
// int c1 = use_machine(m);
// m = {0, 1};
// int c2 = use_machine(m);
// return c1+c2;
//}
int count_mushrooms(int n) {
// vector <int> m;
vector <int> as, bs;
as.push_back(0);
if (use_machine({0, 1}) == 1) {
bs.push_back(1);
if (n == 2) {
return 1;
}
if (use_machine({0, 2}) == 1) {
bs.push_back(2);
}
else {
as.push_back(2);
}
}
else {
as.push_back(1);
if (n == 2) {
return 2;
}
}
int i = 3;
if (bs.size() == 2) {
while (i < n - 1 && as.size() < 100 && bs.size() < 100) {
int c = use_machine({bs[0], i, bs[1], i + 1});
if (c == 3) {
as.push_back(i);
as.push_back(i + 1);
}
else if (c == 2) {
as.push_back(i);
bs.push_back(i + 1);
}
else if (c == 1) {
as.push_back(i + 1);
bs.push_back(i);
}
else {
bs.push_back(i);
bs.push_back(i + 1);
}
i += 2;
}
}
else {
while (i < n - 1 && as.size() < 100 && bs.size() < 100) {
int c = use_machine({as[0], i, as[1], i + 1});
if (c == 3) {
bs.push_back(i);
bs.push_back(i + 1);
}
else if (c == 2) {
bs.push_back(i);
as.push_back(i + 1);
}
else if (c == 1) {
bs.push_back(i + 1);
as.push_back(i);
}
else {
as.push_back(i);
as.push_back(i + 1);
}
i += 2;
}
}
if (i == n) {
return as.size();
}
if (i == n - 1) {
if (use_machine({0, i}) == 1) {
return as.size();
}
else {
return as.size() + 1;
}
}
int ans = as.size();
if (bs.size() == 100) {
while (i < n) {
int j = i;
vector <int> m;
while (j < n && j < i + 100) {
m.push_back(bs[j - i]);
m.push_back(j);
j++;
}
int c = use_machine(m);
if (c % 2 == 1) {
ans += 1;
}
ans += c / 2;
i = j;
}
return ans;
}
while (i < n) {
int j = i;
int cnt = 0;
vector <int> m;
while (j < n && j < i + 100) {
m.push_back(as[j - i]);
m.push_back(j);
j++;
cnt++;
}
int c = use_machine(m);
if (c % 2 == 1) {
c++;
ans += cnt - (c / 2);
}
else {
ans += cnt - (c / 2);
}
i = j;
}
return ans;
}
