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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <iostream>//cout
#include <stdio.h>
#include <vector>
#include <cmath>
#include <algorithm>
#include <string>
#include <queue>
#include <stack>
#include <functional>
#include <list>
#include <utility>//swap
using namespace std;
static const int MAX = 200000;
#define rep(i,n) for(int i=0;i<n;i++)
#define GET_ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
 
int main() {
  string s;
  cin >> s;
  cout << "2018/01/" + s.substr(8,2) << endl;
  return 0;
}