#include<bits/stdc++.h>
using namespace std;
int ww(string s){
	int i=0,j=s.size();
	getline(cin,s);
	while(i<j){
		if(s[i]==s[j]){
			i++;
			j--;
		}else{
			return 0;
		}
	}
	cout<<"1";
}
bool check(int a){
	if((a%4==0&&a%100!=0)||(a%400==0)){
		return true;
	}else{
		return false;
	}
   
}
string Date(string date){
	string R;
	int days[2][12]={{31,28,31,30,31,30,31,31,30,31,30,31},{31,29,31,30,31,30,31,31,30,31,30,31}};
	int year=(date[0]-'0')*1000+(date[1]-'0')*100+(date[2]-'0')*10+(date[3]-'0');
	int month=(date[4]-'0')*10+(date[5]-'0');
	int day=(date[6]-'0')*10+(date[7]-'0');
	day+=1;
	int run=check(year);
	if(day>days[run][month-1]){
		day=1;
		month+=1;
		if(month>12){
			month=1;
			year+=1;
		}		
	}
	R+=year/1000+'0';
	R+=year/100%10+'0';
	R+=year/10%10+'0';
	R+=year%10+'0';
	R+=month/10+'0';
	R+=month%10+'0';
	R+=day/10+'0';
	R+=day%10+'0';
	return R;
}
int main(){
	string d1,d2;
	cin>>d1>>d2;
	int s=0;
	while(d1!=d2){
		if(ww(d1)){
			s+=1;
		}
		d1=Date(d1);
	}
	if(ww(d1)){
			s+=1;
	}
	cout<<s<<endl;
}