using System.Numerics;

public class Program
{
    public static void Main()
    {

        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        string[] str = (Console.ReadLine() ?? string.Empty).Trim().Split('/');
        //string str = Console.ReadLine() ?? string.Empty;

        int y = int.Parse(str[0]);
        string m = str[1];
        string d = str[2];

        //2,4,6,9,11
        if(m == "12"&&d == "30" || m == "12" && d == "31")
        {
            d = (int.Parse(d) + 2).ToString();
            d = "0" + (int.Parse(d) - 31).ToString();
            Console.WriteLine("{0}/{1}/{2}", y + 1, "01", d);
            return;
        }

        if(m == "01"|| m == "03" || m == "05" || m == "07" || m == "08" || m == "10" || m =="12")
        {
            d = (int.Parse(d)+2).ToString();
            if(d== "32"||d == "33")
            {
                d = "0" + (int.Parse(d)-31).ToString();
                m =(int.Parse(m)+1).ToString();
               if(m.Length == 1)
                {
                    m = "0" + m;
                }
            }
            else if(d.Length==1)
            {
                d = "0" + d;
            }
                Console.WriteLine("{0}/{1}/{2}", y, m, d);
        }
        else
        {
            if(m =="02")
            {
                d = (int.Parse(d) + 2).ToString();
                if(y % 4 == 0 && int.Parse(d) >=30)
                {
                    d = "0"+(int.Parse(d)-29).ToString();
                    m = "03";

                }
                else if(int.Parse(d) >= 30)
                {
                    d = "0" + (int.Parse(d) - 28).ToString();
                    m = "03";

                }
                else if (d.Length == 1)
                {
                    d = "0" + d;
                }

                Console.WriteLine("{0}/{1}/{2}", y, m, d);
            }
            else
            {
                d = (int.Parse(d) + 2).ToString();
                if (d == "31" || d == "32")
                {
                    d = "0" + (int.Parse(d) - 30).ToString();
                    m = (int.Parse(m) + 1).ToString();
                    if(m.Length == 1)
                    {
                        m = "0" + m;
                    }
                }
                else if (d.Length == 1)
                {
                    d = "0" + d;
                }

                Console.WriteLine("{0}/{1}/{2}", y, m, d);
            }
        }
    }
}