CoursePlanning

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

public class SoftUniCoursePlanning {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        List<String> subjects = new ArrayList<>();

        String[] scheduleLessons = scanner.nextLine().split(", ");

        for (String scheduleLesson : scheduleLessons) {
            subjects.add(scheduleLesson);
        }

        String line = scanner.nextLine();

        while(!line.equals("course start")){

          String[] tokens = line.split(":");
          String command = tokens[0];

          if(command.equals("Add")){
              if(!subjects.contains(tokens[1])) {
                  subjects.add(tokens[1]);
              }

          }else if(command.equals("Insert")){
              if(!subjects.contains(tokens[1])) {
                  subjects.add(Integer.parseInt(tokens[2]), tokens[1]);
                  // da se vidi indexa
              }

          }else if(command.equals("Remove")){
                  subjects.remove(tokens[1]);


          }else if(command.equals("Swap")) {

              if(subjects.contains(tokens[1])&& subjects.contains(tokens[2])){
                  Collections.swap(subjects, tokens[1].indexOf(tokens[1]),tokens[2].indexOf(tokens[2]));
              }

          }else if(command.equals("Exercise")){
              if(subjects.contains(tokens[1])) {

              }
          }

            line = scanner.nextLine();
        }

        for (int i = 0; i < subjects.size(); i++) {
            System.out.println((i+1)+"."+ subjects.get(i));
        }
    }
}