Two numbers#2325

Two numbers

1 second

128 megabytes

Easy

Two integers are given. Print the largest number that can be obtained from all their digits.

For example, from the digits of numbers $345$ and $6090737$ , we can obtain the largest possible number $9776543300$ .

Input

Two numbers $a$ and $b$ ( $1 \leq a, b \leq 1 0^{9}$ 1 \le a, b \le 10^9) are given in one line.

Print the largest number that can be obtained from the digits of $a$ and $b$ .

Example 1

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1 \leq a, b \leq 1 0^{9}