B - Perfect String

Score : $200$ points

Problem Statement

Let us call a string consisting of uppercase and lowercase English alphabets a wonderful string if all of the following conditions are satisfied:

• The string contains an uppercase English alphabet.
• The string contains a lowercase English alphabet.
• All characters in the string are pairwise distinct.

For example, AtCoder and Aa are wonderful strings, while atcoder and Perfect are not.

Given a string $S$, determine if $S$ is a wonderful string.

Constraints

• $1 \le |S| \le 100$
• $S$ is a string consisting of uppercase and lowercase English alphabets.

Input

Input is given from Standard Input in the following format:

$S$

Output

If $S$ is a wonderful string, print Yes; otherwise, print No.

AtCoder

Yes

AtCoder is a wonderful string because it contains an uppercase English alphabet, a lowercase English alphabet, and all characters in the string are pairwise distinct.

Aa

Yes

Note that A and a are different characters. This string is a wonderful string.

atcoder

No

It is not a wonderful string because it does not contain an uppercase English alphabet.

Perfect

No

It is not a wonderful string because the $2$-nd and the $5$-th characters are the same.