/in/foo.cc:1:2: error: stray '#' in program
    1 | ·#include<bits/stdc++.h>
      |  ^
/in/foo.cc:1:1: error: '\U000000b7' does not name a type
    1 | ·#include<bits/stdc++.h>
      | ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:7:5: error: 'cin' was not declared in this scope
    7 |     cin>>h>>r;
      |     ^~~
/in/foo.cc:14:9: error: 'cout' was not declared in this scope
   14 |         cout<<ans;
      |         ^~~~