Problem code MXMTRIO

I provided this answer, but do not know where is the problem. The answer I get from this code was same when compared to the given input and output. Can someone help?

Hi, use long long data type, it will work.

Here’s what I understood, first let’s look at the constraints:
Here the maximum value of Ai can be 10^6, now let’s take an example:

Test Case:
1 1000000 1000000

So, the maximum value for this case will be (1000000-1)*1000000 i.e 999999000000, and now if you choose int data type then it will not be covered as the maximum value of int can be 2147483647 which is lesser than 999999000000, so you just need to use a data type that has a greater range.