#include<iostream>
#include<string>
using namespace std;
int main(){
	int i,k,m,n,a,b,mi,ni,c,x,y,z,q;
	string s,st;
	cin>>s;
	cin>>st;
	m=0;
	n=0;
	z=0;
	q=0;
	c=0;
	for(i=3;i>=0;i--){
		m=m*10;
		n=n*10;
		m=m+s[i]-48;
		n=n+st[i]-48;
	}
	//cout<<m<<" "<<n<<endl;
	mi=m/1000+(m/100)%10*10+(m%100)/10*100+m%10*1000;
	ni=n/1000+(n/100)%10*10+(n%100)/10*100+n%10*1000;
    //cout<<mi<<" "<<ni<<endl;
	for(i=4;i<=7;i++){
		a=a*10;
		b=b*10;
		a=a+s[i]-48;
		b=b+st[i]-48;
	}
	//cout<<a<<" "<<b<<endl;
	for(i=mi;i<=ni;i++){
		k=i/1000+(i/100)%10*10+(i%100)/10*100+i%10*1000;
		x=k/100;
		y=k%100;
		//cout<<x<<"  "<<y<<endl;
		if(x>0&&x<=12){
			if(x==2){
				if(i%4==0){
					if(y>0&&y<=29)c++;
					if(i==mi)z++;
					if(i==ni)q++;
				}
				else{
				    if(y>0&&y<=28)c++;
					if(i==mi)z++;
					if(i==ni)q++; 
				}
			}
			else{
				if(x<=7&&x%2==1||x>=8&&x%2==0){
					if(y>0&&y<=31)c++;
					if(i==mi)z++;
					if(i==ni)q++; 
				}
				else{
					if(y>0&&y<=30)c++;
					if(i==mi)z++;
					if(i==ni)q++; 
				}
			}
		}
	}
	if(z!=0){
		if(m<a)c--;
	}
	if(q!=0){
		if(n>b)c--;
	}
	cout<<c;
}