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;
using System.Collections.Generic;
using System.Text;


public class B
{
	public static void Main()
	{
		int N = int.Parse(Console.ReadLine());
		int[] d = new int[] {110};

		for(var i =0; i<N; i++)
		{
			d[i] = int.Parse(Console.ReadLine());
		}

		int[] num = new int[] {110};
		for(var i = 0; i< N;i++)
		{
			num[d[i]]++;
		}

		int cnt = 0;
		for (var i =1; i<=100; i++)
		{
			if(num[i]>0)
			{
				cnt++;
			}
		}
		Console.WriteLine(cnt);
	}
}