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 Haskell (GHC 7.10.3) (judge verdict: Wrong Answer)

returnst ::Int -> Int -> String
returnst x y
  | y==0 = show x
  | y>=0 = show x ++ returnst x (y-1)
main = do
 [a,b] <- map read . words <$> getLine
 if returnst a b > returnst b a then print $ (read $ returnst b a ::Int) else print $ (read $ returnst a b ::Int)