#include <iostream>
using namespace std;
string s1, s2;
int q1, q2, q3, z1, z2, z3, res;
bool pd(int x, int y, int z) {
	if (x / 1000 == z % 10 && x % 1000 / 100 == z / 10 && x % 100 / 10 == y % 10 && x % 10 == y / 10) return 1;
	return 0;
}
bool isr(int n) {
	if (n % 4 == 0 && n % 100 != 0) return 1;
	if (n % 100 == 0 && n % 400 == 0) return 1;
	return 0;
}
int main() {
	cin >> s1 >> s2;
	q1 = (s1[0]-'0') * 1000 + (s1[1] - '0') * 100 + (s1[2] - '0') * 10 + (s1[3] - '0');
	q2 = (s1[4] - '0') * 10 + (s1[5] - '0');
	q3 = (s1[6] - '0') * 10 + (s1[7] - '0');
	z1 = (s2[0] - '0') * 1000 + (s2[1] - '0') * 100 + (s2[2] - '0') * 10 + (s2[3] - '0');
	z2 = (s2[4] - '0') * 10 + (s2[5] - '0');
	z3 = (s2[6] - '0') * 10 + (s2[7] - '0');
	for (int i = q1; i <= z1; i++) {
		if (i == q1) {
			for (int j = q2; j <= 12; j++) {
				if (isr(i)&&j==2) {
					for (int k = q3; k <= 29; k++){
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else if(j==2){
					for (int k = q3; k <= 28; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else if(j==1||j==3||j==5||j==7||j==8||j==10||j==12){
					for (int k = q3; k <= 30; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else {
					for (int k = q3; k <= 31; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
			}
		}
		else if (i == z1) {
			for (int j = 1; j <= z2; j++) {
				if (isr(i) && j == 2) {
					for (int k = q3; k <= 29; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else if (j == 2) {
					for (int k = q3; k <= 28; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else if (j == 1 || j == 3 || j == 5 || j == 7 || j == 8 || j == 10 || j == 12) {
					for (int k = q3; k <= 30; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else {
					for (int k = q3; k <= 31; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
			}
		}
		else {
			for (int j = 1; j <= 12; j++) {
				if (isr(i) && j == 2) {
					for (int k = q3; k <= 29; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else if (j == 2) {
					for (int k = q3; k <= 28; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else if (j == 1 || j == 3 || j == 5 || j == 7 || j == 8 || j == 10 || j == 12) {
					for (int k = q3; k <= 30; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
				else {
					for (int k = q3; k <= 31; k++) {
						if (pd(i, j, k)) {
							res++;
						}
					}
				}
			}
		}
	}
	cout << res;// << z1 << z2 << z3 << q1 << q2 << q3;
	return 0;
}