Score : $200$ points

问题描述

你将得到四个字符串 $S_1$, $S_2$, $S_3$ 和 $S_4$。
判断这一串字符串是否恰好包含一个 H、一个 2B、一个 3B 以及一个 HR。
这里保证每个 $S_i$ 都是 H、2B、3B 或 HR。

以上为通义千问 qwen-max 翻译，仅供参考。

Problem Statement

You are given four strings $S_1$, $S_2$, $S_3$, and $S_4$.
Determine whether this sequence of strings has one of each of the following: H, 2B, 3B, and HR.
Here, it is guaranteed that every $S_i$ is H, 2B, 3B, or HR.

Constraints

• Each $S_i$ is H, 2B, 3B, or HR.

Input

Input is given from Standard Input in the following format:

$S_1$

$S_2$

$S_3$

$S_4$

Output

If the given sequence of strings has one of each of H, 2B, 3B, and HR, print Yes.
Otherwise, print No.

Sample Input 1

3B
HR
2B
H

Sample Output 1

Yes

We have one of each of H, 2B, 3B, and HR.

Sample Input 2

2B
3B
HR
3B

Sample Output 2

No

We have no H.

update @ 2024/3/10 09:25:36