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)

n, y = map(int, input().split())
A = [-1, -1, -1]
for i in range(n + 1):
    for j in range(n - i + 1):
        if y == 10000 * i + 5000 * j + 1000 * (n - i - j):
            A = [i, j, n - i - j]
            break
    else:
        continue
    break

print('{} {} {}'.format(A[0], A[1], A[2]))