Eroare de compilare: user.cpp: In function ‘int reject(instance, config)’: user.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c.size() > P.K) ^ user.cpp: In function ‘int accept(instance, config)’: user.cpp:34:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] return c.size() == P.K; ^ user.cpp: In function ‘config first(instance, config)’: user.cpp:39:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c.size () >= P.K) ^ user.cpp: In function ‘config next(instance, config)’: user.cpp:54:18: error: ‘N’ was not declared in this scope if (c.back() >= N) ^ user.cpp: In function ‘void output(instance, config)’: user.cpp:69:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < c.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:97:15: error: ‘root’ was not declared in this scope bt (P, root(P)); ^