PAIRSUM2 HELPP!

[param_aryan]

I can’t find any mistake in my code but its showing WA .
Link of my code - CodeChef: Practical coding for everyone
Can anyone help me in this

[ssjgz]

I don’t mean to be a jerk, but do we really need three threads all containing the string “PAIRSUM2 Help” in the title?

Edit:

Actually, the capitalisation is different - carry on XD

[nuttela]

(20 charac)

[anon31329220]

PAIRSUM2 Help needed

see the sum of pair only exists if Ai ,Aj pair have fabs(j-i)%2==1 or fabs(i-j) is odd only… Therefore this was tricky part of the proble rest by above explanations you can getwhat else is required and the answer finally is Ai+Aj=Bi+Bj-(Bi+1 - Bi+2 +Bi+3 -Bi+4 …Bj-1) alternatively… So final solution link is solution based on prefix sum approach

this was my reply to a similar doubt

[raisinten]

lol [frick this 20 char limit]

[raisinten]

I think arr should be of size y.