@admin , please fulfil the above suggestions. XD

Can someone share what was the other question present in the contest.

Are you sure you can use Gaussian elimination here? There are m equations and n variables, m!= n

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Oob rightâŚsorry i havenât used gaussian elimination method,i asked my friend how to solve linear equations,and he suggested thisâŚ

Though u can refer this for m!=n case:

http://cp-algorithms.com/linear_algebra/linear-system-gauss.html