#include "combo.h" std::string guess_sequence(int N) { std::string p; std::string pos; // find first letter (3 presses) if (press("A")) pos = "BXY", p = "A"; else if (press("B")) pos = "AXY", p = "B"; else if (press("X")) pos = "ABY", p = "X"; else pos = "ABX", p = "Y"; // find next N-1 letters (in N-1 presses?) for (int i = 1; i < N; i++) { int coins = press(p + pos[0] + p + pos[1] + pos[0] + p + pos[1] + pos[2]); if (coins == i + 2) p += pos[1]; else if (coins == i + 1) p += pos[0]; else p += pos[2]; } return p; }