Problem 45502. Basic Operation with the middle number of odd matrix

Created by Muhammad Usman

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Last Solution submitted on Jun 14, 2020

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William on 8 May 2020

As i understand it, the algorithm is only supposed to change the middle element of the matrix. That means the answer to problem 1 in the test suite is incorrect.

Muhammad Usman on 8 May 2020

@William, the problem is not only to change the middle term but to do basic operations with it.
In the first suite 5 is the middle number, add 2 and 8 (column elements) and then subtract 4 and 10 (row elements), so 5+2+8-4-10 = 1

William on 9 May 2020

Hi Muhammad,
Yes, I understand how the value x(2,2) was calculated, but why did the values of x(1,2) and x(3,2) change?

Binbin Qi on 9 May 2020

I do not understand why all the element in the second column equal 1 in the first test suit?

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Problem 45502. Basic Operation with the middle number of odd matrix

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Problem 45502. Basic Operation with the middle number of odd matrix

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