Title Case Check

A magazine's style guide says headlines are set in title case: every word begins with a capital letter, including the short ones. Before a piece is published, an editing tool checks the headline against that rule and gives a plain verdict. The rule only concerns the first letter of each word; the rest of the word is nobody's business.

Task: Read a headline and report whether every word in it begins with a capital letter.

Input

A single line holding a headline of 1 to 200 characters. Words are made of letters and are separated by single spaces. There is at least one word.

Output

One line holding exactly Yes if every word begins with an uppercase letter, or exactly No otherwise.

Example:

Input:
The Quick Brown Fox

Output:
Yes