foo.cc: In function 'int main()':
foo.cc:19:1: error: 'cin' was not declared in this scope
   19 | cin>>m>>n;
      | ^~~
foo.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    1 | #include<iomanip>
  +++ |+#include <iostream>
    2 | 
foo.cc:21:2: error: 'cout' was not declared in this scope
   21 |  cout<<"Yes";
      |  ^~~~
foo.cc:21:2: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
foo.cc:23:3: error: 'cout' was not declared in this scope
   23 |   cout<<"No";
      |   ^~~~
foo.cc:23:3: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?

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