import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        StringBuilder sb = new StringBuilder(s);
        s = s.replace("2017","2018");
        System.out.println(s);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        StringBuilder sb = new StringBuilder(s);
        s = s.replace("2017","2018");
        System.out.println(s);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        StringBuilder sb = new StringBuilder(s);
        s = s.replace("2017","2018");
        System.out.println(s);
    } main {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        StringBuilder sb = new StringBuilder(s);
        s = s.replace("2017","2018");
        System.out.println(s);
    } 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(s); sb new StringBuilder(s) s = s.replace("2017","2018") s s.replace("2017","2018") s.replace s "2017" "2018" System.out.println(s) System.out.println System.out System System.out s String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        StringBuilder sb = new StringBuilder(s);
        s = s.replace("2017","2018");
        System.out.println(s);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        StringBuilder sb = new StringBuilder(s);
        s = s.replace("2017","2018");
        System.out.println(s);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        StringBuilder sb = new StringBuilder(s);
        s = s.replace("2017","2018");
        System.out.println(s);
    }
}