@[linzichen120207](/user/935855) t 是
s 的子序列
by jms2012 @ 2024-09-21 17:02:22
@[jms2012](/user/1429571) 注意审题
by jms2012 @ 2024-09-21 17:03:01
@[linzichen120207](/user/935855) t 是
s的子序列的意思是:
by jms2012 @ 2024-09-21 17:03:53