/*
* Author: Son Pham
* Date: March 16, 2013
* Problem: 518 Time
* Comments: It took two revisions to get this one right. Hence the Time3.java...
*/
import java.util.Scanner;
public class Time3 {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
while(reader.hasNext()){
String read = reader.nextLine();
String[] date = read.split("\\s+");
Date date1 = new Date(Integer.parseInt(date[0]),
Integer.parseInt(date[1]),Integer.parseInt(date[2]),
Integer.parseInt(date[3]),Integer.parseInt(date[4]),
Integer.parseInt(date[5]));
read = reader.nextLine();
date = read.split("\\s+");
Date date2 = new Date(Integer.parseInt(date[0]),
Integer.parseInt(date[1]),Integer.parseInt(date[2]),
Integer.parseInt(date[3]),Integer.parseInt(date[4]),
Integer.parseInt(date[5]));
//System.out.println(date1);
//System.out.println(date2);
read = reader.nextLine();
date = read.split("\\s+");
long numP = Long.parseLong(date[0]);
String period = date[1];
//System.out.println(period);
if(!(period.equals("second")));
pushDate(date1,period);
if((period.equals("year")) || (period.equals("month"))){
if(period.equals("year")){
numP = (date2.year - date1.year)/numP;
}
else{
int years = date2.year - date1.year;
int months = date2.month - date1.month;
if(months < 0){
months += 12;
years--;
}
numP = (years*12+months)/numP;
}
}
else
numP = (getPeriods(date2, period)-getPeriods(date1,period))/numP;
System.out.println(numP);
if(reader.hasNext())
read = reader.nextLine();
}
}
public static void pushDate(Date d, String p){
if(p.equals("year")){
if((d.second != 0) || (d.minute != 0) || (d.hour != 0) || (d.month != 1) || (d.day != 1)){
d.year++;
d.month = 1;
d.day = 1;
d.hour = 0;
d.minute = 0;
d.second = 0;
}
}
else if(p.equals("month")){
if((d.second != 0) || (d.minute != 0) || (d.hour != 0) || (d.day != 1)){
d.month++;
d.day = 1;
d.hour = 0;
d.minute = 0;
d.second = 0;
if(d.month > 12){
d.year++;
d.month = 1;
}
}
}
else if(p.equals("day")){
if((d.second != 0) || (d.minute != 0) || (d.hour != 0)){
d.day++;
d.hour = 0;
d.minute = 0;
d.second = 0;
if(d.day > getDaysInMonth(d.month,d.year)){
d.day = 1;
d.month++;
}
if(d.month > 12){
d.year++;
d.month = 1;
}
}
}
else if(p.equals("hour")){
if((d.second != 0) || (d.minute != 0)){
d.hour++;
d.minute = 0;
d.second = 0;
if(d.hour > 23){
d.day++;
d.hour = 0;
}
if(d.day > getDaysInMonth(d.month,d.year)){
d.day = 1;
d.month++;
}
if(d.month > 12){
d.year++;
d.month = 1;
}
}
}
else if(p.equals("minute")){
if((d.second != 0)){
d.minute++;
d.second = 0;
if(d.minute > 59){
d.minute = 0;
d.hour++;
}
if(d.hour > 23){
d.day++;
d.hour = 0;
}
if(d.day > getDaysInMonth(d.month,d.year)){
d.day = 1;
d.month++;
}
if(d.month > 12){
d.year++;
d.month = 1;
}
}
}
}
public static boolean isLeap(int year)
{
return ((year%400 == 0) ||(year%100 != 0 && year%4 == 0));
}
public static int getDaysInMonth(int m,int y){
switch(m){
case 1:
return 31;
case 2:
if(isLeap(y))
return 29;
else
return 28;
case 3:
return 31;
case 4:
return 30;
case 5:
return 31;
case 6:
return 30;
case 7:
return 31;
case 8:
return 31;
case 9:
return 30;
case 10:
return 31;
case 11:
return 30;
default:
}
return 31;
}
private static long getPeriods(Date d, String p){
long days = 0;
int years = d.year;
while(years >= 1970){
--years;
if(isLeap(years)){
days += 366;
}
else{
days += 365;
}
}
int months = d.month;
years = d.year;
while(months > 1){
--months;
days += getDaysInMonth(months,years);
}
days += (d.day-1);
if(p.equals("day"))
return days;
long hours = days*24+d.hour;
if(p.equals("hour"))
return hours;
long minutes = hours*60+d.minute;
if(p.equals("minute"))
return minutes;
long seconds = minutes*60+d.second;
return seconds;
}
static class Date{
int year,month,day,hour,minute,second;
public Date(int y, int m, int d, int h, int min, int sec){
year = y;
month = m;
day = d;
hour = h;
minute = min;
second = sec;
}
public String toString(){
return (year+" "+month+" "+day+" "+hour+" "+minute+" "+second);
}
}
}
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