/in/foo.cc: In function 'int main()':
/in/foo.cc:14:39: 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("%d",&a[i]);
                                       ^
/in/foo.cc:17:19: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   scanf("%d",&b[i]);
                   ^