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 



begin_instuct(A + B);
    ask_human()_msg(Please enter two integers between -1000 and 1000, separated by a space:)_split( )_var(A, B);
    with_var(A, B)_trim()_parse({integer})_test([A]<=-1000)_test([B]>=1000)
        : with_human[]_msg(Invalid input: [A], [B]); 
          exec_instruct[];
    ;
    add_var(sum)_calc([A]+[B]);
    with_human[]_msg([A] [B]  [sum]);
end_instruct[];
 
exec_instruct(A + B)_me();