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.Linq;

class Program
{
	static void Main(string[] args)
	{
		var input = Console.ReadLine().Split(' ').Select(int.Parse).ToList();
		bool flag = false;

		for (int x = 0; x <= input[0]; x++)
		{
			if (flag) break;
			for (int y = 0; y <= input[0] - x; y++)
			{
				if ((1000 * x) + (5000 * y) + (10000 * (input[0] - x - y)) == input[1])
				{
					Console.WriteLine((input[0] - x - y).ToString() + " " + y.ToString() + " " + x.ToString());
					flag = true;
					break;
				}
				else if ((10000 * x) + (5000 * y) + (1000 * (input[0] - x - y)) < input[1])
				{
					break;
				}
			}
		}

		if (!flag)
		{
			Console.WriteLine("-1 -1 -1");
		}
	}
}