ZBROJ

문제

Young Borko's mother is making him work on his arithmetic. In spite of the large amount of time he spends pretending to be practicing, he still can't quite manage addition. 

Borko is aware that he has to add one digit at a time from right to left, but he's too lazy to "carry over" so he always immediately adds the sum of two digits to the left of the result. 

For example, he adds the numbers 123 and 2495 like this: 

       1  2  3
 +  2  4  9  5
----------------
    2  5 11  8

When he reads the result, he gets 25118. 

You are given two numbers which Borko is to add. Write a program that determines the result he will get. 

입력

The first and only line of input contains two integers A and B separated by a space, the numbers Borko is trying to add. Both numbers will be between 1 and 1 000 000. 

출력

Output the "sum" Borko gets. 

512 444

956

123 2495

25118

99999 99999

1818181818