https://open.kattis.com/problems/quadrant
In this problem, there you are given a number and want to see which quadrant it exists on. At first, it appears like a geometry problem, but its solution can be calculated without any of that.
Quadrants can be determined based off the x and y values like this:
x, y = 1
-x, y = 2
-x, -y = 3
x, -y = 4
The simple solution is to use if and else to determine which quadrant it's in, based on whether x and y are > 0 or not.