Compilare: user.cpp: In function ‘bool bfs(int, int)’: user.cpp:46:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i(0); i < noduri.size(); i += 2) ^ user.cpp: In function ‘int main()’: user.cpp:22:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, " %d %d ", &n, &m); ^ user.cpp: In function ‘void create_tree(int)’: user.cpp:58:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, " %d %d ", &a, &b); ^