/in/foo.cc: In function 'void dfs(long long int, long long int)':
/in/foo.cc:37:23: error: expected primary-expression at end of input
   37 |                 if(fa=
      |                       ^
/in/foo.cc:37:23: error: expected ')' at end of input
   37 |                 if(fa=
      |                   ~   ^
      |                       )
/in/foo.cc:37:23: error: expected statement at end of input
/in/foo.cc:37:23: error: expected '}' at end of input
/in/foo.cc:35:9: note: to match this '{'
   35 |         {
      |         ^
/in/foo.cc:36:21: warning: unused variable 'v' [-Wunused-variable]
   36 |                 int v=e[i].to;
      |                     ^
/in/foo.cc:37:23: error: expected '}' at end of input
   37 |                 if(fa=
      |                       ^
/in/foo.cc:26:1: note: to match this '{'
   26 | {
      | ^