foo.cc:6:1: error: 'pubilc' does not name a type; did you mean 'putwc'?
 pubilc:
 ^~~~~~
 putwc
foo.cc: In function 'int main()':
foo.cc:36:6: error: 'class HLS' has no member named 'input'
  hls.input(a);
      ^~~~~
foo.cc:37:15: error: no matching function for call to 'HLS::display(long int [2][2])'
  hls.display(a);
               ^
foo.cc:17:7: note: candidate: void HLS::display()
  void display()
       ^~~~~~~
foo.cc:17:7: note:   candidate expects 0 arguments, 1 provided

[Hydro](https://hydro.ac)提供评测服务