/in/foo.cc:1:2: error: stray '\' in program
    1 | v\#include <iostream>
      |  ^
/in/foo.cc:1:3: error: stray '#' in program
    1 | v\#include <iostream>
      |   ^
/in/foo.cc:1:1: error: 'v' does not name a type
    1 | v\#include <iostream>
      | ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:5:5: error: 'cin' was not declared in this scope
    5 |     cin>>n>>m;
      |     ^~~
/in/foo.cc:45:5: error: 'cout' was not declared in this scope
   45 |     cout<<max<<endl;
      |     ^~~~
/in/foo.cc:45:16: error: 'endl' was not declared in this scope
   45 |     cout<<max<<endl;
      |                ^~~~