import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int current = Integer.parseInt(sc.next());
		int end = Integer.parseInt(sc.next());
		int result = 0;
		for (; current <= end; current++) {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		}
		System.out.println(result);
	}
}
 import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int current = Integer.parseInt(sc.next());
		int end = Integer.parseInt(sc.next());
		int result = 0;
		for (; current <= end; current++) {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		}
		System.out.println(result);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int current = Integer.parseInt(sc.next());
		int end = Integer.parseInt(sc.next());
		int result = 0;
		for (; current <= end; current++) {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		}
		System.out.println(result);
	} main {
		Scanner sc = new Scanner(System.in);
		int current = Integer.parseInt(sc.next());
		int end = Integer.parseInt(sc.next());
		int result = 0;
		for (; current <= end; current++) {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		}
		System.out.println(result);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int current = Integer.parseInt(sc.next()); current Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int end = Integer.parseInt(sc.next()); end Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int result = 0; result 0 for (; current <= end; current++) {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		} ; current <= end current end current++ current++ current {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		} {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		} char[] arr = Integer.toString(current).toCharArray(); arr Integer.toString(current).toCharArray() Integer.toString(current).toCharArray Integer.toString(current) Integer.toString Integer current if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			} arr[0] == arr[4] && arr[1] == arr[3] arr[0] == arr[4] arr[0] arr 0 arr[4] arr 4 arr[1] == arr[3] arr[1] arr 1 arr[3] arr 3 {
				result++;
			} result++ result System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int current = Integer.parseInt(sc.next());
		int end = Integer.parseInt(sc.next());
		int result = 0;
		for (; current <= end; current++) {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		}
		System.out.println(result);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int current = Integer.parseInt(sc.next());
		int end = Integer.parseInt(sc.next());
		int result = 0;
		for (; current <= end; current++) {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		}
		System.out.println(result);
	}
} Main
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int current = Integer.parseInt(sc.next());
		int end = Integer.parseInt(sc.next());
		int result = 0;
		for (; current <= end; current++) {
			char[] arr = Integer.toString(current).toCharArray();
			if (arr[0] == arr[4] && arr[1] == arr[3]) {
				result++;
			}
		}
		System.out.println(result);
	}
}

