/in/foo.cc: In function 'void dfs2(int)':
/in/foo.cc:48:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(vis[x]) return; vis[x]=true;
  ^~
/in/foo.cc:48:21: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  if(vis[x]) return; vis[x]=true;
                     ^~~