b + a or a + b

Problem Description

Since the standard addition operation is too complex to describe within this page, we will introduce our addition operation «+». The result of adding numbers $A$ and $B$ (denote it as $A+B$) will be the number obtained by appending $B$ to the right of $A$. For example, $20 + 25 = 2025$, and $25 + 20 = 2520$. As you can see, $A + B$ is not always equal to $B + A$, so find the smaller of the two.

That is, given $A$ and $B$, you need to find the smallest of the numbers $A+B$ and $B+A$.

Input Format

A single line contains two integers $A$ and $B$ ($0 < A, B < 1000$).

Output Format

Print a single number - the smallest of the numbers $A+B$ and $B+A$.

20
25

2025