#include "bits/stdc++.h"
#include "combo.h"
using namespace std;
int press(string s);
string guess_sequence(int N) {
int xy = press("XY");
char first;
string oth;
if (xy > 0) {
// x or y
int x = press("X");
if (x > 0) {
first = 'X';
oth = "ABY";
}
else {
first = 'Y';
oth = "ABX";
}
}
else {
// a or b
int a = press("A");
if (a > 0) {
first = 'A';
oth = "BXY";
}
else {
first = 'B';
oth = "AXY";
}
}
string found;
found += first;
for (int i=1; i<N-1; i++) {
// to find this i try a few things
int curr = i;
string qry = (found + oth[0]) + (found + oth[1] + oth[0]) + (found + oth[1] + oth[1]) + (found + oth[1] + oth[2]);
// cout << qry << endl;
int res = press(qry);
if (res == curr) {
found += oth[2];
}
else if (res > curr + 1) {
found += oth[1];
}
else {
found += oth[0];
}
}
if (press(found + oth[0]) == N) {
found = found + oth[0];
return found;
}
if (press(found + oth[1]) == N) {
found = found + oth[1];
return found;
}
found = found + oth[2];
return found;
}
