You have a list of trees cordinate (x, y) in a forest. You have a camera with a fixed degree(within 0 - 360) of visibility which can only be placed in origin (0, 0). You have also given with a predefined function that returns the degree of angle any tree's coordinate is making with x-axis (within 0 - 360). Return a list(of minimum size) of degrees your camera should be placed, so that it can capture all the trees.

Example1 :- list - [{1, 0}, {2, 1}, {3, 1}] degree of camera :- 90 => ans = [0]
Example2 :- list - [{1, 1}, {1, -1}] degree of camera :- 90 => ans = [315]