You are given a passage. Using the information present in the passage, you need to classify it into one of the 10 topics: 0 - 'Society & Culture', 1 - 'Science & Mathematics', 2 - 'Health', 3 - 'Education & Reference', 4 - 'Computers & Internet', 5 - 'Sports', 6 - 'Business & Finance', 7 - 'Entertainment & Music', 8 - 'Family & Relationships', 9 - 'Politics & Government'.

Ex Input:
Imaginary numbers are numbers than when squared equal a negative number, as in i^2 = -1, where i is the imaginary number. You'll also often see them represented as i = √-1 (that's the square root of -1).\nDon't be confused by the poorly chosen name - imaginary numbers do indeed exist and are used in advanced math, such as in the physics of electromagnetic fields. The analogy that Wikipedia uses is a good one - just like you don't need the concept of fractions to count stones, it doesn't mean that fractions don't exist. :)

Ex Output:
1


Ex Input:
Porcelin (can't spell that silly word) is normally considered the best. It is also the most expensive but totally worth it, especially if you are younger & having to have dentures for whatever reason. The porcelin look much more natural & wear longer...

Ex Output:
2


Ex Input:
Select "Program Control" and then the "Programs" tab and scroll down until you see the program that want to allow.  Right click on the program and select allow.

Ex Output:

4


