#include <bits/stdc++.h> using namespace std; string guess_sequence(int N) { string p = ""; for (int i = 0; i < 4 * N; ++i) { p += 'A'; } int coins = press(p); std::string S = ""; for (int i = 0; i < N; ++i) { S += 'A'; } return S; }

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:15: error: 'press' was not declared in this scope
    9 |   int coins = press(p);
      |               ^~~~~