问题
3, —1, 5, 1, ()
3, —1, 5, 1, ( )
A. 3 B. 7 C. 25 D. 64
Fatal error: Uncaught [XSException] ../../../usr/local/xunsearch/sdk/php/lib/XS.php(2559): Connection refused(C#111, localhost:8384)
thrown in /usr/local/xunsearch/sdk/php/lib/XS.php on line 2559