Compilare: main.c: In function 'main': main.c:63:17: warning: unused variable 'f' [-Wunused-variable] int i,n,m,j,f; ^ main.c:63:15: warning: unused variable 'j' [-Wunused-variable] int i,n,m,j,f; ^ main.c:61:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen ("cmlsc.in","r",stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:62:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen ("cmlsc.out","w",stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:64:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^~~~~~~~~~~~~~~~~~~ main.c:67:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i]); ^~~~~~~~~~~~~~~~~ main.c:71:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&b[i]); ^~~~~~~~~~~~~~~~~