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
The sum of the numbers in the vector
Compare two input matrices
Multiply by 3
Determine the mean of matrix
Display positive elements of matrix.
Sum positive elements of matrix.
Form a square matrix from four square sub-matrices
Find hen's weight.
Find cosine between two given vectors u and v.
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