/in/foo.cc: In function 'int dfs(int, int, int)':
/in/foo.cc:30:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=head[k];i;i=edge[i].nxt)
  ^~~
/in/foo.cc:32:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   data f=que.top();
   ^~~~