2L decoder, d=16, ff=48
* 时间O(n) 空间O(n)（理论最优，无冗余计算）
，详情可参考夫子
"Cuba will defend itself with determination and firmness against any terrorist and mercenary aggression that seeks to affect its sovereignty and national stability," Díaz-Canel said on X.。爱思助手下载最新版本对此有专业解读
（二）违反国家规定，对计算机信息系统功能进行删除、修改、增加、干扰的；