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.
Who knows the last digit of pi?
Basic electricity in a dry situation
Set the array elements whose value is 13 to 0
Find out value of sine given by degree.
Minimal Path - 02
The Tortoise and the Hare - 01
find subscripts from linear index
No of squares in a grid
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