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")
        {
            Console.WriteLine("{0}/{1}/{2}", y + 1, "01", "01");
            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 = "01";
                m=(int.Parse(m)+1).ToString();
            }
            Console.WriteLine("{0}/{1}/{2}", y, m, d);
        }
        else
        {
            if(m =="2")
            {
                d = (int.Parse(d) + 2).ToString();
                if(y % 4 == 0 && int.Parse(d) >=30)
                {
                    d = "0"+(29-int.Parse(d)).ToString();
                    
                }
                else if(int.Parse(d) >= 30)
                {
                    d = "0" + (28 - int.Parse(d)).ToString();
                }
                m = "03";
                Console.WriteLine("{0}/{1}/{2}", y, m, d);
            }
            else
            {
                d = (int.Parse(d) + 2).ToString();
                if (d == "31" || d == "32")
                {
                    d = "01";
                    m = (int.Parse(m) + 1).ToString();
                }
                Console.WriteLine("{0}/{1}/{2}", y, m, d);
            }
        }
    }
}