Compilare: user.cpp: In function ‘void BFS(int)’: user.cpp:25:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < adjList[nod].size(); ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:40:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &n, &m, &s); ^ user.cpp:42:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &a, &b); ^