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.*;

public class Main{
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();
		int Y=sc.nextInt();

		int x=-1;
		int y=-1;
		int z=-1;
		
		for(int i=0;i<=N;i++){
			for(int j=0;j<=N;j++){
				for(int k=0;k<=N;k++){
					if(i+j+k==N&&1000*i+5000*j+10000*k==Y){
						x=i;
						y=j;
						z=k;
						System.out.println(z+" "+y+" "+x);
						i=N;
						j=N;
						k=N;
					}
				}
			}
		}
		if(x==-1){
			System.out.println(z+" "+y+" "+x);
		}
	}
}