This problem has issues. The coordinates of the cities are wrong. (Correct values can be taken from Google maps). New York's location is at 40.7128, -74.0059 and not 40.7128, 74.0059. The distance between Berlin and London is too close to its harvesine distance (which considers Earth's curvature; and the pythagorean distance cannot possible be that close). And that makes me believe that the author used different methods to calculate the distances between different cities. Moreover, the problem should explain what it is the precision required, if pi should be used with its exact value, if the Earth should be considered as an ellipsoid or an sphere. and finally which method must be used to convert from lat/long to cartesian coordinates (or at least, a hint). Please fix the problem description and the test suite whenever possible.
Reverse Run-Length Encoder
Get the area codes from a list of phone numbers
Back to basics 21 - Matrix replicating
How to subtract?
How do you make seven even?
Persistence will not help you solve this problem.
how to concatenate matrices
A little bit of luck needed
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