Compilare: main.c: In function 'main': main.c:10:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen(InFile,"r",stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~ main.c:11:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen(OutFile,"w",stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:14:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld\n",&p,&n); ^~~~~~~~~~~~~~~~~~~~~~~~~ main.c:17:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld\n",&x,&k); ^~~~~~~~~~~~~~~~~~~~~~~~~