Asif, Thanks for another nice problem.
I think the description would be improved if it said the "red shaded portion", because there are two shaded portions in the drawing.
Given a window, how many subsets of a vector sum positive
Divisible by 4
Write c^3 as sum of two squares a^2+b^2
Find the Oldest Person in a Room
ZigZag - 05
Minimal Path - 03
Do they touch?
3rd side of a Triangle
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