Problem 43634. Find product of eigenvalues of n*n magic matrix.

Andriy Kavetsky

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Find product of eigenvalues of n*n magic matrix.

Example

n=3

Matrix= [ 8 1 6; 3 5 7; 4 9 2]

result=-360

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109 Solutions

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Last Solution submitted on Feb 17, 2026

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1 Comment

David Verrelli on 3 Jul 2018

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

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