#include "combo.h"
#include <bits/stdc++.h>
std::string guess_sequence(int N){
using namespace std;
string v = "ABXY";
string s = "";
int f = -1;
string curr = ""+string(1,v[0]) + string(1,v[1]);
if(press(curr))
{
if(press(string(1,v[0])))
{
f = 0;
}
else f = 1;
}
else
{
if(press(string(1,v[2])))
{
f = 2;
}
else f = 3;
}
s.push_back(v[f]);
swap(v[f],v.back());
v.pop_back();
if(N==1) return s;
for(int i=0; i<N-2; i++)
{
int n = s.size();
string s1 = s;
string s2 = s;
string s3 = s;
string s4 = s;
s1 = s1 + v[0]+v[0];
s2 = s2 + v[0]+v[1];
s3 = s3 + v[0]+v[2];
s4 = s4 + v[1];
string curr = s1 + s2 + s3 + s4;
int cnt = press(curr);
if(cnt==n+2)
{
s.push_back(v[0]);
}
else if(cnt==n+1) s.push_back(v[1]);
else s.push_back(v[2]);
}
s.push_back(v[0]);
if(press(s)==N)
{
return s;
}
s.pop_back();
s.push_back(v[1]);
if(press(s)==N)
{
return s;
}
s.pop_back();
s.push_back(v[2]);
return s;
}
