#include <bits/stdc++.h>
#include "combo.h"
using namespace std;
std::string guess_sequence(int N) {
cout << "N = " << N << endl;
vector<char> letters = {'A', 'B', 'X', 'Y'};
char init;
if(press("AB") >= 1)
{
if(press("A") >= 1)
init = 'A';
else
init = 'B';
}
else
{
if(press("X") >= 1)
init = 'X';
else
init = 'Y';
}
for(int i = 0; i < (int)letters.size(); i++)
{
if(letters[i] == init)
swap(letters[i], letters.back());
}
letters.pop_back();
// vector<char> p;
// p.pus
// cout << "init = " << init << endl;
std::string p = "";
p += init;
// cout << "init p = " << p << endl;
for(int i = 1; i < N - 1; i++)
{
string S = p + letters[0] + p + letters[1] + letters[0] + p + letters[1] + letters[1] + p + letters[1] + letters[2];
int coins = press(S);
if(coins == (int) p.size())
p = p + letters[2];
else if (coins == (int) p.size() + 1)
p = p + letters[0];
else
p = p + letters[1];
}
// cout << "near final: " << p << endl;
if(press(p + letters[0]) == N)
return p + letters[0];
if(press(p + letters[1]) == N)
return p + letters[1];
return p + letters[2];
}
