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# (.NET Core 3.1.201) (judge verdict: Accepted)

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

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] ab = Console.ReadLine().Split(" ");
            string a = ab[0];
            string b = ab[1];
            string A = "";
            string B = "";
            for(int i = 0; i < int.Parse(b); i++)
            {
                A += a;
            }
            for(int i = 0; i < int.Parse(a); i++)
            {
                B += b;
            }
            string[] titles = new string[] { A, B };
            Array.Sort(titles);
            Console.WriteLine(titles[0]);
        }
    }
}
//int[] N = Console.ReadLine().Split(" ").Select(x => int.Parse(x)).ToArray();