using System;

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​

    public class Program

    {

        public static void Main()

        {

            int dia, mes, ano;

​

            string texto;

            texto = Console.ReadLine();

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            dia = int.Parse(texto.Split('/')[0]);

            mes = int.Parse(texto.Split('/')[1]);

            ano = int.Parse(texto.Split('/')[2]);

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            DateTime date = new DateTime(ano, mes, dia);

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            Console.WriteLine(date.ToString("MM/dd/yy"));

            Console.WriteLine(date.ToString("yy/MM/dd"));

            Console.WriteLine(date.ToString("dd-MM-yy")); 

        }

    }

​

​