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 Ruby (2.3.3) (judge verdict: Runtime Error)

N, Y = gets.split(' ').map(&:to_i)

count = [-1, -1, -1]
is_break = false

aaa = [Y/1000+1, N].min
(0..aaa).each do |n_i| #n_i=300
  i = N - n_i #i=700:上から
  next if 10000*i + 1000*(N-i) > Y
  (0..(N-i)).each do |n_i_j| #n_i_j=0~300=n_i:100
    j = N - i - n_i_j #j=1000-700-100=200:上から
    next if 10000*i + 5000*j + 1000*(N-i-j) > Y
    (0..(N-i-j)).each do |n_i_j_k| #n_i_j_k:0~(1000-700-200=100=n_i_j):30
      k = N - i - j - n_i_j_k #k=1000-700-200-30=70:上から
      if 10000*i + 5000*j + 1000*k == Y
        count = [i, j, k]
        is_break = true
        break
      end
    end
    break if is_break
  end
  break if is_break
end

ans = count[0].to_s + ' ' + count[1].to_s + ' ' + count[2].to_s
print ans