The problem is asking for tangent circles.
Problem with the third test suite
in 3rd case,
they intersect at two points.
In geometry, tangent circles (also known as kissing circles) are circles that intersect in a single point.
Find the sum of all the numbers of the input vector
Unique values without using UNIQUE function
Length of a short side
Sum of odd numbers in a matrix
Rotate a matrix without using rot90
Connect Four - 03
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