#include <bits/stdc++.h>
#include "combo.h"
using namespace std;
const int mxN = 2005;
string guess_sequence(int n) {
string p = "", comb;
if(press("A") == 1)
p = "A", comb = "BXY";
else if(press("B") == 1)
p = "B", comb = "AXY";
else if(press("X") == 1)
p = "X", comb = "ABY";
else
p = "Y", comb = "ABX";
while((int) p.length() < n-1) {
int match = press(p+comb[0]+p+comb[1]+comb[0]+p+comb[1]+comb[1]+p+comb[1]+comb[2]);
if(match == (int) p.length())
p += comb[2];
else if(match == (int) p.length()+1)
p += comb[0];
else
p += comb[1];
}
if(press(p+comb[0]) == n)
p += comb[0];
else if(press(p+comb[1]) == n)
p += comb[1];
else
p += comb[2];
return p;
}
