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();
        y /= 1000;
        boolean max = false;

        for (int i=0; i<=n; i++) {
            if(max){
                break;
            }
            for(int j=0; j<=n-i; j++){
                if(max){
                    break;
                }
                for(int k=0; k<=n-i-j; k++){
                    long sum = i*10+j*5+k;
                    if(sum==y){
                        System.out.println(i+" "+j+" "+k);
                        max = true;
                        break;
                    }
                }
            }
        }

        if(max==false){
            System.out.println(-1+" "+-1+" "+-1);
        }
    }
}