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 state names that start with the letter N
Specific Element Count
sum of non-primes
Compute Fibonacci Number
Matlab Basics II - squares
Sub-sequence - 02
Combinatorics - 01
Queen's move - 02
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