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 Python (3.4.3) (judge verdict: Runtime Error)

import sys

N, Y = [int(s) for s in sys.stdin.readline().split(" ")]
Y2 = (Y/1000)-5*N

for z in range(0, 2001):
  x = (5*z-Y2)/4
  
  if x < 0:
    continue
  
  if int(x)-x==0:
  	x = int(x)
  	y = N-x-z
  	if y<0:
  		continue
  	
  	print(z, y, x)
  	exit(0)
  
  
print("-1 -1 -1")
exit(0)