Welcome to MAXO SUBTRACTO'S SUBTRACTION LESSON!

I'm MAXO SUBTRACTO, your professor. 

This is a simple game where I give you a target number, and you must collect a specific amount of numbers that, when subtracted, equal the target number. I think I said that right. 

For example I might give you the target number of -22, and you need to collect 3 numbers.  So you'd move around and find 3 numbers that, when subtracted from 0, equal -22! OK!

Once a successful target number is matched, you're given half the target number seconds to collect as many numbers as you can to earn points. 

If you collect 2000 points you pass my lesson!

If you take longer than 60 seconds you FAIL! But don't worry, you can try again.

Each failed SUBTRACTO adds time, and a successful SUBTRACTO subtracts time from the timer. 

Good Luck! I know you can do it!