using System;

public class Test
{
	static char[] StringToArray(string str)
        {
            char[] array = new char[str.Length];
            for (int i = 0; i < str.Length; i++)
            {
                array[i] = str[i];
            }
            return array;
        }

        static string ChangeFirstAndLastLettersThenImplode(char[] array)
        {
            var first = array[0];
            string result = " ";

            array[0] = array[array.Length - 1];
            array[array.Length - 1] = first;

            for(int i = 0; i < array.Length; i++)
            {
                result = result + array[i];
            }

            return result;

        } 

        static void Print()
        {
            Console.WriteLine(ChangeFirstAndLastLettersThenImplode(StringToArray("Анон")).Trim());
        }
        
        static void Main(string[] args)
        {
            Print();
        }
}