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: Wrong Answer)

#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
using namespace std;

int main()
{
    int N;
    long Y;
    cin >> N;
    cin >> Y;
    for (int i = N; i >= 0; i--)
    {
        int x = i;
        for (int j = N - i; j >= 0; j--)
        {
            int y = j;
            int z = N - i - j;
            if (10000 * x + 5000 * y + 1000 * z == Y)
            {
                cout << x << " " << y << " " << z << endl;
                return 0;
            }
        }
    }
    cout << "-1 -1 -1" << endl;
}