Compilare: user.cpp: In function ‘void Solve()’: user.cpp:36:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(V[it] == G[it].size() - 1 && heap.size() < n - 1 - k + 2){ ^ user.cpp:36:75: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(V[it] == G[it].size() - 1 && heap.size() < n - 1 - k + 2){ ^ user.cpp: In function ‘int main()’: user.cpp:53:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%hd %hd", &n,&k); ^ user.cpp:55:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%hd %hd", &x,&y); ^