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 Java8 (OpenJDK 1.8.0) (judge verdict: Runtime Error)

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int y = sc.nextInt();
		int man_bill = -1;
		int gosen_bill = -1;
		int sen_bill = -1;
		final int man = 10000;
		final int gosen = 5000;
		final int sen = 1000;
		
		for (int i=0; i<=n; i++) {
			for (int j=0; j+i<=n; j++) {
				int c= n-j-i;
				int tot = i*man + j*gosen + c*sen;
				if (y == tot) {
					man_bill = i;
					gosen_bill = j;
					sen_bill = c;
				}
			}
		}
		
		System.out.println(man_bill + " " + gosen_bill + " " + sen_bill);
	}
}