#include "combo.h"
using namespace std;
std::string guess_sequence(int N) {
string alpha, p = "";
if (press("A")) p += 'A', alpha = "BXY";
else if (press("B")) p += 'B', alpha = "AXY";
else if (press("X")) p += 'X', alpha = "ABY";
else p += 'Y', alpha = "ABX";
for (int i = 0; i < N; i++) {
if (press(p + alpha[0]) == i + 1) p += alpha[0];
else if (press(p + alpha[1]) == i + 1) p += alpha[1];
else p += alpha [2];
}
return p;
}
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