olivander.cpp: In function 'int main()':
olivander.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
olivander.cpp:9:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for( int i = 0 ; i < n ; i++ ) scanf("%d",&x[i]);
                                    ~~~~~^~~~~~~~~~~~
olivander.cpp:10:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for( int i = 0 ; i < n ; i++ ) scanf("%d",&y[i]);
                                    ~~~~~^~~~~~~~~~~~