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 C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>

#define STRING_LENGTH 10
#define ARRAY_SIZE (STRING_LENGTH + 1)

void solve(char s[ARRAY_SIZE]);


int main()
{
  char s[ARRAY_SIZE];

  scanf("%s", &s);
  solve(s);

  return 0;
}

void solve(char s[ARRAY_SIZE])
{
  s[0] = '2';
  s[1] = '0';
  s[2] = '1';
  s[3] = '8';

  printf("%s\n", s);
}