8779: 【入门】数组查找及替换

内存限制：512 MB 时间限制：1.000 S 提交：8 解决：4
评测方式：文本比较 命题人：

Fatal error: Uncaught Error: Call to a member function get() on null in /home/judge/src/web/template/syzoj/problem.php:102 Stack trace: #0 /home/judge/src/web/problem.php(173): require() #1 {main} thrown in /home/judge/src/web/template/syzoj/problem.php on line 102