Count Words in a Sentence

A classifieds site charges by the word, so the listing form shows a live word count as the seller types the description. A word here is a run of characters with a space on either side of it — no cleverness about hyphens or punctuation.

Task: Read one description and print how many words it contains.

Input

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

Output

One line holding a single integer: the number of words in the sentence.

Example:

Input:
the quick brown fox

Output:
4