Hello, Andriy Kavetsky. The tolerance in test 2 of the Test Suite is quite strange. As written, it seems that a result that is 1000 times larger than the true answer would be accepted as adequate. See Problem 44690 & Problem 44691 for some alternative cues. Also, it is recommended that at least four cases be provided in a Test Suite, though more are often necessary to prevent hard-coded workarounds. —DIV
Make a checkerboard matrix
Back to basics 21 - Matrix replicating
Determine Whether an array is empty
Reverse the elements of an array
first element of matrix
Compare two strings.
Opposite task convert binary numbers array into array of decimal numbers.
Get derivarive of polynomial given as vector array.
For given vectors x,y find coresponding spline coefficients.
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