#include<bits/stdc++.h>
using namespace std;
int main(){
	long long a,b,sum=0;
	int yf[12]={31,29,31,30,31,30,31,31,30,31,30,31};
	cin>>a>>b;
	int a1,a2,a3,b1,b2,b3;
	a1=a/10000;
	a2=a%10000/100;
	a3=a%100;
	b1=b/10000;
	b2=b%10000/100;
	b3=b%100;
	for(int i=0;i<12;i++){
		for(int j=0;j<yf[i];j++){
			int c1;
			c1=j%10*1000+j/10*100+i%10*10+i/10;
			if(c1>a1&&c1<b1&&i>a2&&i<b2&&j>a3&&j<b3){
				sum++;
			}
		}
	}
	cout<<sum;
}