using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace lab4_2
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string w = Console.ReadLine();
            StringBuilder w1 = new StringBuilder();
            StringBuilder w2 = new StringBuilder();
 
            foreach (var x in w)
            {
                if (char.IsDigit(x))
                {
                    w1.Append(x);
                }
                if (char.IsLetter(x))
                {
                    w2.Insert(0, x);
                }
            }
            string result = w1.ToString() + w2.ToString();
            Console.WriteLine(result);
        }
    }
}

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YT0yLCB0PTUsIGM9Mw==

a=2, t=5, c=3