Building a Palette From Custom Hex Colors

A Marlow & Finch client's brand book lists their approved colours as hex codes, and nothing outside that list may appear in a chart. The studio therefore builds the palette from the exact codes rather than sampling a ready-made ramp. Before the charts are laid out, the build script reports how many colours the brand actually supplied, because a chart with more categories than colours has to be redesigned rather than fudged.

Task: Print how many colours the brand list contains.

Input

One line holding hex colour codes separated by single spaces, between 1 and 100 of them. Each code starts with # and contains no spaces.

Output

One line holding a whole number: how many colours were listed.

Example:

Input:
#FF0000 #00FF00 #0000FF

Output:
3