Main.cc: In function ‘int main()’:
Main.cc:41:31: error: ‘mod’ was not declared in this scope
add(ans,1ll*check(i,k/i)%mod);
^~~
Main.cc:41:31: note: suggested alternative: ‘modf’
add(ans,1ll*check(i,k/i)%mod);
^~~
modf
Main.cc:28:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d",&n,&m,&k);
~~~~~^~~~~~~~~~~~~~~~~~~
Main.cc:30:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&a[i]);
~~~~~^~~~~~~~~~~~
Main.cc:35:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&b[i]);
~~~~~^~~~~~~~~~~~