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 C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;
using System.Collections.Generic;
using System.Linq;

namespace ComparingStrings
{
    class Program
    {

        static void Main(string[] args)
        {
            var input = Console.ReadLine().Split(' ');

            int leftString = int.Parse(input[0]);
            int rightString = int.Parse(input[1]);

            List<int> leftStringList = new List<int>();
            List<int> rightStringList = new List<int>();

            for (int i = 0; i < rightString; i++)
            {
                leftStringList.Add(leftString);
            }

            for (int i = 0; i < leftString; i++)
            {
                rightStringList.Add(rightString);
            }

            if (leftStringList[0] > rightStringList[0])
            {
                string outputPrint = string.Join("", rightStringList.ToArray());
                Console.WriteLine(outputPrint);
            }

            if (rightStringList[0] > leftStringList[0])
            {
                string outputPrint = string.Join("", leftStringList.ToArray());
                Console.WriteLine(outputPrint);
            }
            else
            {
                string outputPrint = string.Join("", leftStringList.ToArray());
                Console.WriteLine(outputPrint);
            }
        }
    }
}