The problem says the input is a positive integer but the first test inputs 0. In my code that caused r = 0/0 error. Please change the wording to "input is non-negative".
Rotate a Matrix by 90 degrees
Create matrix of replicated elements
Length of a short side
Deleting an element in a matrix
Can I make a right triangle ?
Vector of numbers divisible by 3
How many digits are there?
Volume and area of a sphere
Mean and standard deviation of times in string
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