#include "mushrooms.h"
#include<bits/stdc++.h>
using namespace std;
#define all(v) v.begin(),v.end()
#define mm use_machine
#define pb push_back
int calc(string s,vector<int> v){
int ans=0;
for(int i=0;i+1<(int)v.size();i++){
if(s[v[i]]!=s[v[i+1]]) ans++;
}
return ans;
}
map<int,string> mp;
void make(string s){
if(s.length()==4){
mp[calc(s,{0,2,1,3})]=s;
return;
}
make(s+'A');
make(s+'B');
}
int count_mushrooms(int n) {
int ans=0;
string s;
for(int i=0;i<n;i++) s+='?';
s[0]='A';
if(mm({0,1})) s[1]='B';
else s[1]='A';
if(mm({1,2})) s[2]=char(((s[1]-'A')^1)+'A');
else s[2]=s[1];
int i=0,j=0;
for(int a=0;a<=2;a++){
for(int b=a+1;b<=2;b++){
if(s[a]==s[b]){
i=a;
j=b;
break;
}
}
}
string t;
t+=s[i];t+=s[j];
make(t);
for(int k=3;k<n;k+=2){
if(k+1<n){
int x=mm({i,j,k,k+1});
string t = mp[x];
s[k]=t[2];
s[k+1]=t[3];
}else{
int x=mm({k,k-1});
if(x){
s[k]=char(((s[k-1]-'A')^1)+'A');
}else s[k]=s[k-1];
}
}
for(auto x:s){
ans+=x=='A';
}
return ans;
}
Compilation message
stations.cpp:1:10: fatal error: mushrooms.h: No such file or directory
1 | #include "mushrooms.h"
| ^~~~~~~~~~~~~
compilation terminated.
