public class Main{
  public static void main(String[] args) throws Exception{
    char[] kari=new char[10];
    for(int i=0;i<10;i++) kari[i]=(char)System.in.read();
    kari[3]='8';
    for(int i=0;i<10;i++) System.out.print(kari[i]);
    System.out.print("\n");
  }
} public class Main{
  public static void main(String[] args) throws Exception{
    char[] kari=new char[10];
    for(int i=0;i<10;i++) kari[i]=(char)System.in.read();
    kari[3]='8';
    for(int i=0;i<10;i++) System.out.print(kari[i]);
    System.out.print("\n");
  }
} Main public static void main(String[] args) throws Exception{
    char[] kari=new char[10];
    for(int i=0;i<10;i++) kari[i]=(char)System.in.read();
    kari[3]='8';
    for(int i=0;i<10;i++) System.out.print(kari[i]);
    System.out.print("\n");
  } main {
    char[] kari=new char[10];
    for(int i=0;i<10;i++) kari[i]=(char)System.in.read();
    kari[3]='8';
    for(int i=0;i<10;i++) System.out.print(kari[i]);
    System.out.print("\n");
  } char[] kari=new char[10]; kari new char[10] 10 for(int i=0;i<10;i++) kari[i]=(char)System.in.read(); int i=0; int i=0; i 0 i<10 i 10 i++ i++ i kari[i]=(char)System.in.read(); kari[i]=(char)System.in.read() kari[i] kari i (char)System.in.read() System.in.read System.in System System.in kari[3]='8' kari[3] kari 3 '8' for(int i=0;i<10;i++) System.out.print(kari[i]); int i=0; int i=0; i 0 i<10 i 10 i++ i++ i System.out.print(kari[i]); System.out.print(kari[i]) System.out.print System.out System System.out kari[i] kari i System.out.print("\n") System.out.print System.out System System.out "\n" String[] args args public class Main{
  public static void main(String[] args) throws Exception{
    char[] kari=new char[10];
    for(int i=0;i<10;i++) kari[i]=(char)System.in.read();
    kari[3]='8';
    for(int i=0;i<10;i++) System.out.print(kari[i]);
    System.out.print("\n");
  }
} public class Main{
  public static void main(String[] args) throws Exception{
    char[] kari=new char[10];
    for(int i=0;i<10;i++) kari[i]=(char)System.in.read();
    kari[3]='8';
    for(int i=0;i<10;i++) System.out.print(kari[i]);
    System.out.print("\n");
  }
} Main
public class Main{
  public static void main(String[] args) throws Exception{
    char[] kari=new char[10];
    for(int i=0;i<10;i++) kari[i]=(char)System.in.read();
    kari[3]='8';
    for(int i=0;i<10;i++) System.out.print(kari[i]);
    System.out.print("\n");
  }
}