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.
Test for balanced parentheses
Remove the polynomials that have positive real elements of their roots.
7 segment LED display
Flip the bit
Find the nearest prime number
Don't be Too Greedy!
Minimal Path - 01
Summing Rows and Columns
Coin Distribution - 02
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