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: Runtime Error)

#include <stdio.h>

int main(void){
    int n;
    int d[100];
    int ans;
    
    scanf("%d", &n);
    ans = n;
    for (int i = 0; i < n; i++){
        scanf("%d", &d[i]);
    }
    for (int i = 0; i < n; i++){
        for (int j = i + 1; j < n; j++){
            if (d[i] == d[j]) {
                ans -= 1;
            }
        }
    }
    printf("%d\n", ans);
    return 0;
}