Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:58:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < mlc.size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:70:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("autobuze3.out", "w", stdout); ^