#include<bits/stdc++.h>
using namespace std;
int ans=0;
int month_day[13]=
{
	0,31,28,31,30,31,30,31,31,30,31,30,31	
};
string date1,date2;
int year_1,month_1,day_1;
int year_2,month_2,day_2;
int year_now,month_now,day_now;
void inpt()
{
	cin>>date1>>date2;
	year_1=(date1[0]-'0')*1000+(date1[1]-'0')*100+(date1[2]-'0')*10+(date1[3]-'0');
	month_1=(date1[4]-'0')*10+(date1[5]-'0');
	day_1=(date1[6]-'0')*10+(date1[7]-'0');
	year_2=(date2[0]-'0')*1000+(date2[1]-'0')*100+(date2[2]-'0')*10+(date2[3]-'0');
	month_2=(date2[4]-'0')*10+(date2[5]-'0');
	day_2=(date2[6]-'0')*10+(date2[7]-'0');
	year_now=year_1;
	month_now=month_1;
	day_now=day_1;
}
bool pd(int year)
{
	if(year%4==0)
	{
		if(year%100==0)
		{
			if(year%400==0)
			{
				return true;
			}
			return false;
		}
		return true;
	}
	return false;
}
void dfs(int year,int month,int day)
{
	if(month!=2)
	{
		if(day>month_day[month])
		{
			day-=month_day[month];
			month++;
		}
	}else
	{
		if(pd(year))
		{
			if(day>29)
			{
				day-=29;
				month++;
			}	
		}else
		{
			if(day>28)
			{
				day-=28;
				month++;
			}
		}
	}
	if(month>12)
	{
		year++;
		month-=12;
	}
	if(year==year_2&&month==month_2&&day==day_2) return;
	int day_dl=(day%10)*10+(day/10%10);
	int month_dl=(month%10)*10+(month/10%10);
	int year_zh=day_dl*100+month_dl;
	if(year==year_zh) ans++;
	dfs(year,month,day+1);
}
int main()
{
	inpt();
	dfs(year_now,month_now,day_now);
	printf("%d",ans);
}