import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        StringBuilder sb = new StringBuilder();
        sb.append("2018/01/");
        sb.append(S.charAt(8));
        sb.append(S.charAt(9));
        String ans = sb.toString();
        System.out.println(ans);
    }
} import java.util.*; util.* java class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        StringBuilder sb = new StringBuilder();
        sb.append("2018/01/");
        sb.append(S.charAt(8));
        sb.append(S.charAt(9));
        String ans = sb.toString();
        System.out.println(ans);
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        StringBuilder sb = new StringBuilder();
        sb.append("2018/01/");
        sb.append(S.charAt(8));
        sb.append(S.charAt(9));
        String ans = sb.toString();
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        StringBuilder sb = new StringBuilder();
        sb.append("2018/01/");
        sb.append(S.charAt(8));
        sb.append(S.charAt(9));
        String ans = sb.toString();
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc StringBuilder sb = new StringBuilder(); sb new StringBuilder() sb.append("2018/01/") sb.append sb "2018/01/" sb.append(S.charAt(8)) sb.append sb S.charAt(8) S.charAt S 8 sb.append(S.charAt(9)) sb.append sb S.charAt(9) S.charAt S 9 String ans = sb.toString(); ans sb.toString() sb.toString sb System.out.println(ans) System.out.println System.out System System.out ans String[] args args
import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        StringBuilder sb = new StringBuilder();
        sb.append("2018/01/");
        sb.append(S.charAt(8));
        sb.append(S.charAt(9));
        String ans = sb.toString();
        System.out.println(ans);
    }
}