Main.cc: In function ‘int dfs()’:
Main.cc:7:32: error: ‘finished’ was not declared in this scope; did you mean ‘finshed’?
    7 |     while((x=getchar())!=EOF&&!finished){
      |                                ^~~~~~~~
      |                                finshed
Main.cc:15:1: warning: no return statement in function returning non-void [-Wreturn-type]
   15 | }
      | ^