import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;
import java.util.Date;
import java.util.*;

 class Day {
    private float temperature;
    private float wind;
    private float humidity;
    private float visibility;
    private Date date;


    public Day(float temperature, float wind, float humidity, float visibility, Date date) {
        this.temperature = temperature;
        this.wind = wind;
        this.humidity = humidity;
        this.visibility = visibility;
        this.date = date;
    }
    public float getTemperature(){
        return temperature;
    }

    @Override
    public String toString() {
        return temperature+" "+wind+" "+"km/h "+humidity+"% "+visibility+" km "+date;
    }


}
class WeatherStation {
    private int day;
    private TreeMap<Date,Day> selectedDays;

    public WeatherStation(int day) {
        this.day = day;
        this.selectedDays=new TreeMap<>();
    }

    public boolean checkDays(Date date1,Date date2) {
        Calendar cal = Calendar.getInstance(), cal1 = Calendar.getInstance();
        cal.setTime(date1);
        cal1.setTime(date2);
        cal.add(Calendar.DAY_OF_MONTH, -5);
        return cal1.before(cal);
    }
    public boolean checkMap(Set<Date> dates,Date date){
        for(Date date1:dates){
            if(checkTime(date,date1))
                return false;
        }
        return true;
    }

    public boolean checkTime(Date date1,Date date2){
        Calendar cal=Calendar.getInstance(),cal1=Calendar.getInstance();
        cal.setTime(date1);
        cal1.setTime(date2);
       return date1.getTime() / 60000.0 - date2.getTime() / 60000.0 < 2.5;
    }

    public void addMeasurment(float temperature, float wind, float humidity, float visibility, Date date){

       Map<Date,Day> newMap=new TreeMap<>();
       newMap.putAll(selectedDays);
        if(selectedDays.size() != 0){

            for(Date date1:newMap.keySet()){
                if(checkDays(date,date1))
                    selectedDays.remove(date1);
            }
            if(checkMap(selectedDays.keySet(),date))
                selectedDays.put(date,new Day(temperature,wind,humidity,visibility,date));
        }else
            selectedDays.put(date,new Day(temperature,wind,humidity,visibility,date));
    }

    public int total(){
        return selectedDays.size();
    }
    public double averageTemp(){
        double average=0;
        for(Map.Entry<Date,Day> entry:selectedDays.entrySet()){
            average+=entry.getValue().getTemperature();
        }
        return average/selectedDays.size();
    }

    public void status(Date from, Date to){
        int number=0;
        for(Map.Entry<Date,Day> entry:selectedDays.entrySet()){
            if(entry.getKey().after(from) && entry.getKey().before(to)) {
                System.out.println(entry.getValue());
                number++;
            }
        }
        if(number == 0)throw new RuntimeException();

        String sep="Average temperature: "+String.format("%.2f",averageTemp());
        System.out.println(sep);
    }
}


public class WeatherStationTest {
	public static void main(String[] args) throws ParseException {
		Scanner scanner = new Scanner(System.in);
		DateFormat df = new SimpleDateFormat("dd.MM.yyyy HH:mm:ss");
        int n = scanner.nextInt();
        scanner.nextLine();
		WeatherStation ws = new WeatherStation(n);
		while (true) {
			String line = scanner.nextLine();
			if (line.equals("=====")) {
				break;
			}
			String[] parts = line.split(" ");
			float temp = Float.parseFloat(parts[0]);
			float wind = Float.parseFloat(parts[1]);
			float hum = Float.parseFloat(parts[2]);
			float vis = Float.parseFloat(parts[3]);
			line = scanner.nextLine();
			Date date = df.parse(line);
			ws.addMeasurment(temp, wind, hum, vis, date);
		}
		String line = scanner.nextLine();
		Date from = df.parse(line);
		line = scanner.nextLine();
		Date to = df.parse(line);
		scanner.close();
		System.out.println(ws.total());
		try {
			ws.status(from, to);
		} catch (RuntimeException e) {
			System.out.println(e);
		}
	}
}

// vashiot kod ovde