foo.cc:1:1: error: stray '##' in program
    1 | ##include <iostream>
      | ^~
foo.cc:1:3: error: 'include' does not name a type
    1 | ##include <iostream>
      |   ^~~~~~~
foo.cc: In function 'int main()':
foo.cc:6:2: error: 'cin' was not declared in this scope
    6 |  cin>>n;
      |  ^~~
foo.cc:20:8: error: break statement not within loop or switch
   20 |        break;
      |        ^~~~~
foo.cc:31:7: error: 'cout' was not declared in this scope
   31 |       cout<<"Yes";
      |       ^~~~
foo.cc:36:5: error: 'cout' was not declared in this scope
   36 |     cout<<"No";
      |     ^~~~

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