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.
Bottles of beer
Sum of diagonal of a square matrix
Symmetry of vector
Natural numbers in string form
Matlab Basics - Convert a row vector to a column vector
Sum! Sum! Sum!
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