Problem Statement

A+B   ─── a classic problem in programming contests,   it's given so contestants can gain familiarity with the online judging system being used.

Given two integers,   A and B. Their sum needs to be calculated.

Two integers are written in the input stream, separated by space(s):

The required output is one integer:   the sum of A and B.

Let's start with the solution:

$ jq -s add
3 2
5

def addpairs:
  if length < 2 then empty
  else (.[0] + .[1]), (.[2:] | addpairs)
  end;

addpairs

$ jq -s -f AB.jq
1 2 3 4 5 6
3
7
11