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



Task

Given two integers,   A and B.

Their sum needs to be calculated.



Input data

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

 



(
−
1000
≤
A
,
B
≤
+
1000
)


{\displaystyle (-1000\leq A,B\leq +1000)}




Output data

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



Example



 input  

 output  


 2 2 

 4 


 3 2 

 5 



 
(: 
  Using the EXPath File Module, which is built into most XQuery processors 
  by default and thus does not need to get imported. Some processors bind the
  namespace automatically, others require explicit declaration.
:)
 
xquery version "3.1";
 
declare namespace file = 'http://expath.org/ns/file';
 
let $in       := 'input.txt'
let $out      := 'output.txt'
let $numbers  := tokenize(file:read-text($in))
let $result   := xs:numeric($numbers[1]) + xs:numeric($numbers[2])
return file:write-text($out, xs:string($result))
 