/in/foo.cc:9:27: warning: missing terminating " character
    9 |                 cout<<ts<<"\n;
      |                           ^
/in/foo.cc:9:27: error: missing terminating " character
    9 |                 cout<<ts<<"\n;
      |                           ^~~~
/in/foo.cc: In function 'void dfs(int, std::string)':
/in/foo.cc:10:17: error: expected primary-expression before 'return'
   10 |                 return;
      |                 ^~~~~~