For N = 9, I got the following result:

4*1738=6952

4*1963=7852

12*483=5796

18*297=5346

27*198=5346

28*157=4396

39*186=7254

42*138=5796

48*159=7632

sum = 56370

I passed all tests except the last one. Can someone please tell me what's going wrong here?

ive used brute force approach to solve this and got timeout in testcase 5 can anyone explain it

see my java solution here

what is the upper limit of the numbers to be considered for multiplicand and multiplier ?

some hints for boundary conditions ,this may help u link: https://euler.beerbaronbill.com/en/latest/solutions/32.html