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:

go =>
   println("Write two integers (and CR)"),
   println(read_int()+read_int()).