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题目背景

​${\color{Red} \mathcal {{\LARGE S_{1A}} } }$

Zhao_Ying_he(作者)的狗是zzy_hhh得了病！

题目描述

狗药有$n$种，zzy_hhh得了$m$! 药有$a_i$。

输入格式

$N$ $M$

$a_1$

$a_2$

$a_3$

$a_N$

输出格式

需要几号药剂？ ${\color{Red} 没有输出} {\color{Red}oh}$ ${\color{Red}no!}$

输入输出样例

输入 #1

4 KuangQuanBing
kuangquanyao
duyao
siyao
kuangyao

输出 #1

1

说明/提示

$$不区分大小写$$

$$1\le n\le 50$$