Compilare: user.cpp: In function ‘int main()’: user.cpp:24:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(!Q.empty() && Viz.count() <= P && !ans) { ^ user.cpp:16:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%hd", &T); ^ user.cpp:19:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &N, &P); ^