The NSA is analyzing their data and looking for possible names.

A name starts with an uppercase letter and is followed by zero or more letters (of any case). For example, Ben, McKay, and T are names; ben, mcKay, and T_ are not names.

Given an sequence of characters, how many names are there?

For example, Ben_aT8McK has eight names:

1. B
2. M
3. K
4. T
5. Be
6. Mc
7. Ben
8. McK

A non-empty sequence of up to 30,000 characters. All characters are ASCII letters, numbers, or underscores.

The number of names. Include any duplicates in your count.