import java.util.*;

class Main{
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		String st = sc.next();
		String stsub = st.substring(8,10);

		System.out.println("2018/01/"+stsub);
	}
} import java.util.*; util.* java class Main{
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		String st = sc.next();
		String stsub = st.substring(8,10);

		System.out.println("2018/01/"+stsub);
	}
} Main public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		String st = sc.next();
		String stsub = st.substring(8,10);

		System.out.println("2018/01/"+stsub);
	} main {
		Scanner sc = new Scanner(System.in);
		String st = sc.next();
		String stsub = st.substring(8,10);

		System.out.println("2018/01/"+stsub);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String st = sc.next(); st sc.next() sc.next sc String stsub = st.substring(8,10); stsub st.substring(8,10) st.substring st 8 10 System.out.println("2018/01/"+stsub) System.out.println System.out System System.out "2018/01/"+stsub "2018/01/" stsub String args[] args
import java.util.*;

class Main{
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		String st = sc.next();
		String stsub = st.substring(8,10);

		System.out.println("2018/01/"+stsub);
	}
}