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
Factorize THIS, buddy
Matrix of almost all zeros, except for main diagonal
Multiply two polynomials p and q given in in vector representation.
Delete x value in given vector y.
Select primes from the matrix.
Find Euclidean norm of given vector u.
Display positive elements of matrix.
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