using System;

using System.Collections.Generic;

public class Program

{   

    public static void Main()

    {

        Console.WriteLine(canCreatePalindrome("levlle"));

    }

    static bool canCreatePalindrome(string str) {

        var count = new Dictionary<char, int>();

​

        foreach(char c in str)

        {

            if(count.ContainsKey(c))

                count[c] +=1;

            else

                count.Add(c, 1);

        }

        int odd = 0;

        foreach(char c in count.Keys)

        {

            if ((count[c] & 1) == 1)

                odd++;

​

            if (odd > 1)

                return false;

        }

​

        return true;

    }

}