The sorted coefficients in your example should be [1; 4; 3; -2].
The test suite is also comparing against an incorrect result in the last problem.
Read a Soroban Abacus
Getting the indices from a matrice
Count up then down
Symmetry of vector
Multivariate polynomials - emulate symbolic form
Fangs of a vampire number
Find vampire numbers
Product of two multivariate polynomials
Multivariate polynomials - overload multiplication
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