import java.util.Calendar;
import java.util.Locale;

import org.joda.time.DateTime;

public class WochenImMonat {

	private static int getAnzWochen() {
		int year = 2010, month = 2;
		DateTime firstDay = new DateTime(year, month, 1, 0, 0);
		DateTime thisDay = firstDay;
		Calendar cal = firstDay.toCalendar(Locale.GERMANY);
		int anzDaysInMonth = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
		int counter = 0;
		while (true) {
			int monday = thisDay.getDayOfWeek();
			if (monday == 1) {
				break;
			}
			thisDay = thisDay.plusDays(1);
			++counter;
		}
		if (counter == 0)
			counter = 7;
		double tmpDiff = anzDaysInMonth - counter;
		double ausgabe = tmpDiff / 7 + 1;
		if(ausgabe == 4.0 && anzDaysInMonth > 28)
			ausgabe = ausgabe + 1;
		return (int) Math.ceil(ausgabe);
	}

	public static void main(String[] args) {
		System.out.println(getAnzWochen());

	}
}