import java.io.*;
import java.lang.*;
public class siffer{
  public static void main(String argumendid[]) throws IOException{
    //muutujad
    int i, a=0, b=1, c=2, d=3;
    String taht;
    boolean go=false;
    
    BufferedReader sisse=new BufferedReader( new InputStreamReader(System.in) );

    System.out.println("Vali tegevus:");
    System.out.println("Kryptime 1 - Dekryptime 2");
    String valik=sisse.readLine();
    System.out.println("L2hte fail?");
    String start=sisse.readLine();
    System.out.println("Krypteeritud fail?");
    String end=sisse.readLine();

    if (valik.equals("1")){
      a=0;
      b=1;
      c=2;
      d=3;
      go=true;
    }else if(valik.equals("2")){
      a=2;
      b=3;
      c=0;
      d=1;
      go=true;
    }else{
      go=false;
      System.out.println("Midagi l2ks vist kanni.. pahasti");
    }
 
    if(go==true){
      //tekitame ava teksti sisse lugeja
      BufferedReader tekst=new BufferedReader( new FileReader(start) );

      //tekitame krüpteerituf faili kirjutamija
      PrintWriter valja=new PrintWriter( new FileWriter(end) );

      String rida=tekst.readLine();
      while(rida!=null){
       for (i=0; i<rida.length(); i++){
        taht=rida.substring(i, i+1);
        BufferedReader voti=new BufferedReader( new FileReader("voti.txt") );
        String votmeRida=voti.readLine();
        while (votmeRida!=null){
          if (votmeRida.substring(a, b).equals(taht)){
            valja.print(votmeRida.substring(c, d));
          }
          votmeRida=voti.readLine();
        }
        voti.close();
       }
       valja.println("");    
       rida=tekst.readLine();
      }
      tekst.close();
      valja.close();
    }
  }
}