No Submissions for Lost Guy Radhu

can anyone explain me what is MX in the contraint ?
and my solution gives RE SIGSEGV, i guess that is because of contraint MX.
https://www.codechef.com/viewsolution/27541023

cant refer others solution also because no submissions
Thanks in Advance

MX is just the constraint of Ai. Ai won’t be greater than 10**9.
There are submissions but we can’t see them. For the same reason, I can’t see yours from the link as well.

thanks man.

You can report it to bugs@codechef.com i think

i guess they are purposely hiding submissions. those are previous exam questions.