#include "combo.h"
#include <bits/stdc++.h>
using namespace std;
string guess_sequence(int N) {
/*
char firstLetter;
if(press("X")) firstLetter = 'X';
if(press("Y")) firstLetter = 'Y';
if(press("A")) firstLetter = 'A';
if(press("B")) firstLetter = 'B';
*/
string wyn;
for(int i = 0; i < N; i++){
if(press(wyn+"A")-wyn.size()>0) {wyn.push_back('A'); continue;}
if(press(wyn+"B")-wyn.size()>0) {wyn.push_back('B'); continue;}
if(press(wyn+"X")-wyn.size()>0) {wyn.push_back('X'); continue;}
if(press(wyn+"Y")-wyn.size()>0) {wyn.push_back('Y'); continue;}
}
return wyn;
}
