/in/foo.cc: In function 'int main()':
/in/foo.cc:49:6: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
      else
      ^~~~
/in/foo.cc:56:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
    p=Next[p];  
    ^