字符串 1
学了五年 KMP拜谢 oi-wiki。字符串下标从 $0$ 开始,$s_{[l, r]}$ 闭区间子串,定义 $\displaystyle \pi_i = \max_{j \in [0, i]}...
In mathematics you don't understand things, you just get used to them.
In mathematics you don't understand things, you just get used to them.