/in/foo.cc: In function 'int main()':
/in/foo.cc:14:41: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  for(int i=0;i<n;i++) scanf("ll%d",&a[i]);
                                         ^
/in/foo.cc:17:21: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   scanf("ll%d",&b[i]);
                     ^