task

import java.util.*;

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

        String input = sc.nextLine();

        Map<String,List<String>> racerAndRoads = new HashMap<>();
        Map<String,Integer> roadsAndCountOfRacers = new HashMap<>();

        while(!input.equals("END")){
            String[] tokens = input.split("->");
            String token = tokens[0];

            if (token.equals("Add")){
                String road = tokens[1];
                String racer = tokens[2];
                if (!racerAndRoads.containsKey(road)){
                    racerAndRoads.put(road,new ArrayList<>());
                    racerAndRoads.get(road).add(racer);
                    roadsAndCountOfRacers.put(road,1);
                }
                else{
                    racerAndRoads.get(road).add(racer);
                    roadsAndCountOfRacers.put(road,roadsAndCountOfRacers.get(road)+1);
                }
                //System.out.println(racerAndRoads);
            }
            else if (token.equals("Move")){
                String road = tokens[1];
                String racer = tokens[2];
                String nextRoad = tokens[3];
                if (racerAndRoads.containsKey(road)){
                    if (racerAndRoads.get(road).contains(racer)){
                        racerAndRoads.get(road).remove(racer);
                        roadsAndCountOfRacers.put(road,roadsAndCountOfRacers.get(road)-1);
                        if (roadsAndCountOfRacers.get(road)==0){
                            racerAndRoads.remove(road);
                        }
                        //System.out.println(racerAndRoads);

                        racerAndRoads.get(nextRoad).add(racer);
                        //System.out.println(racerAndRoads);
                    }
                }
                //System.out.println(racerAndRoads);
            }
            else if (token.equals("Close")){
                String road = tokens[1];

                racerAndRoads.remove(road);
                //System.out.println(racerAndRoads);
            }

            input = sc.nextLine();
        }
        System.out.println("Practice sessions:");
        for (Map.Entry<String,List<String>> entry : racerAndRoads.entrySet()) {
            System.out.printf("%s%n",entry.getKey());
            for (Map.Entry<String,List<String>> entry2 : racerAndRoads.entrySet()) {
                if (entry.getKey().equals(entry2.getKey())){
                    //System.out.printf("++%s%n",entry2.getValue());
                    String output = String.join("\n++",entry2.getValue());
                    System.out.printf("++%s%n",output);
                }
            }
        }
    }
}