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 



 
#define ORDER_PP_DEF_1int_is_positive \
    ORDER_PP_FN(8fn(8X, 8is_0(8tuple_at_0(8X))))
 
#define ORDER_PP_DEF_1int_get_unsigned \
    ORDER_PP_FN(8fn(8X, 8tuple_at_1(8X)))
 
#define ORDER_PP_DEF_1int_add_impl \
    ORDER_PP_FN(8fn(8A, 8B, 8S, 8int(8S, 8add(8A, 8B))))
 
#define ORDER_PP_DEF_1int_sub_impl \
    ORDER_PP_FN(8fn(8A, 8B, \
                    8if(8greater(8A, 8B), \
                        8int(0, 8sub(8A, 8B)), \
                        8int(1, 8sub(8B, 8A)))))
 
#define ORDER_PP_DEF_8int_add \
    ORDER_PP_FN(8fn(8A, 8B, \
                    8cond((8and(1int_is_positive(8A), 1int_is_positive(8B)), \
                                1int_add_impl(1int_get_unsigned(8A), 1int_get_unsigned(8B), 0)) \
                          (8and(1int_is_positive(8A), 8not(1int_is_positive(8B))), \
                                1int_sub_impl(1int_get_unsigned(8A), 1int_get_unsigned(8B))) \
                          (8and(8not(1int_is_positive(8A)), 1int_is_positive(8B)), \
                                1int_sub_impl(1int_get_unsigned(8B), 1int_get_unsigned(8A))) \
                          (8and(8not(1int_is_positive(8A)), 8not(1int_is_positive(8B))), \
                                1int_add_impl(1int_get_unsigned(8A), 1int_get_unsigned(8B), 1)))))
 
#define ORDER_PP_DEF_8int_to_lit \
    ORDER_PP_FN(8fn(8X, \
                    8if(1int_is_positive(8X), \
                        8to_lit(1int_get_unsigned(8X)), \
                        8adjacent(8(-), 8to_lit(1int_get_unsigned(8X))))))
 
#define ORDER_PP_DEF_8int \
    ORDER_PP_FN(8fn(8S, 8N, 8pair(8S, 8N)))
 
ORDER_PP(8int_to_lit(8int_add(A, B)))
 