Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36
Equal (1): Everything in this purple space must be equal to 1. The answer is 1-4, placed horizontally; 3-1, placed horizontally.
，详情可参考搜狗输入法下载
Which fonts are most dangerous?
* @param n 数组长度