Problem:
Score : 200 points

Problem Statement

Given are 1-digit positive integers a and b. Consider these two strings: the concatenation of b copies of the digit a, and the concatenation of a copies of the digit b. Which of these is lexicographically smaller?

Constraints

1 \leq a \leq 9

1 \leq b \leq 9

a and b are integers.

Input

Input is given from Standard Input in the following format:

a b

Output

Print the lexicographically smaller of the two strings. (If the two strings are equal, print one of them.)

Sample Input 1

4 3

Sample Output 1

3333

We have two strings 444 and 3333. Between them, 3333 is the lexicographically smaller.

Sample Input 2

7 7

Sample Output 2

7777777

Solution in Common Lisp (SBCL 1.1.14) (judge verdict: Accepted)

(let* ((ls (read-from-string (concatenate 'string "(" (read-line) ")")))
       (mx (apply #'max ls))
       (mn (apply #'min ls)))
  (princ (make-string mx :initial-element (char (prin1-to-string mn) 0))))