Problem:
Score : 100 points

Problem Statement

On some day in January 2018, Takaki is writing a document. The document has a column where the current date is written in yyyy/mm/dd format. For example, January 23, 2018 should be written as 2018/01/23.

After finishing the document, she noticed that she had mistakenly wrote 2017 at the beginning of the date column. Write a program that, when the string that Takaki wrote in the date column, S, is given as input, modifies the first four characters in S to 2018 and prints it.

Constraints

S is a string of length 10.

The first eight characters in S are 2017/01/.

The last two characters in S are digits and represent an integer between 1 and 31 (inclusive).

Input

Input is given from Standard Input in the following format:

S

Output

Replace the first four characters in S with 2018 and print it.

Sample Input 1

2017/01/07

Sample Output 1

2018/01/07

Sample Input 2

2017/01/31

Sample Output 2

2018/01/31

Solution in C# (Mono 4.6.2.0) (judge verdict: Runtime Error)

using System;
using System.Collections.Generic;
using System.Linq;

namespace AtCoder
{
    class Program
    {
        static void Main()
        {
            var inputList = Console.ReadLine().Split(' ').Select(x => Convert.ToInt32(x)).ToList<int>();

            for (int num10000 = 0; num10000 <= inputList[0]; num10000++)
                for (int num5000 = 0; num5000 <= inputList[0]; num5000++)
                {
                    var amountMoney = num10000 * 10000 + num5000 * 5000 + (inputList[0] - (num10000 + num5000)) * 1000;

                    if (amountMoney == inputList[1])
                    {
                        Console.WriteLine(num10000 + " " + num5000 + " " + (inputList[0] - (num10000 + num5000)));
                        return;
                    }
                }

            Console.WriteLine("-1 -1 -1");
        }
    }


}