Problem10034--ABC338 —— A - Capitalized?

10034: ABC338 —— A - Capitalized?

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Time Limit : 1.000 sec  Memory Limit : 512 MiB

Description

You are given a non-empty string $S$ consisting of uppercase and lowercase English letters. Determine whether the following condition is satisfied:

-   The first character of $S$ is uppercase, and all other characters are lowercase.

Input

The input is given from Standard Input in the following format:

```
$S$
```

Output

If the condition is satisfied, print `Yes`; otherwise, print `No`.

Constraints

-   $1 \leq |S| \leq 100$ ($|S|$ is the length of the string $S$.)
-   Each character of $S$ is an uppercase or lowercase English letter.

Sample 1 Input

Capitalized

Sample 1 Output

Yes
The first character C of Capitalized is uppercase, and all other characters apitalized are lowercase, so you should print Yes.

Sample 2 Input

AtCoder

Sample 2 Output

No
AtCoder contains an uppercase letter C that is not at the beginning, so you should print No.

Sample 3 Input

yes

Sample 3 Output

No
The first character y of yes is not uppercase, so you should print No.

A

Yes

Source/Category