Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36
The Taliban government in Kabul stressed it was ready to negotiate on Friday as violence intensified between the two countries.
，这一点在safew官方版本下载中也有详细论述
需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
Read the full story at The Verge.