
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;
		for(int i = a; i < b + 1; i++) {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		}
		System.out.println(ans);

	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;
		for(int i = a; i < b + 1; i++) {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		}
		System.out.println(ans);

	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;
		for(int i = a; i < b + 1; i++) {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		}
		System.out.println(ans);

	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;
		for(int i = a; i < b + 1; i++) {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		}
		System.out.println(ans);

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for(int i = a; i < b + 1; i++) {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		} int i = a; int i = a; i a i < b + 1 i b + 1 b 1 i++ i++ i {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		} {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		} if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			} i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10 i / 10000 == i % 10 i / 10000 i 10000 i % 10 i 10 (i / 1000) % 10 == (i / 10) % 10 (i / 1000) % 10 (i / 1000) i 1000 10 (i / 10) % 10 (i / 10) i 10 10 {
				ans++;
			} ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;
		for(int i = a; i < b + 1; i++) {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		}
		System.out.println(ans);

	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;
		for(int i = a; i < b + 1; i++) {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		}
		System.out.println(ans);

	}

} Main

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;
		for(int i = a; i < b + 1; i++) {
			if(i / 10000 == i % 10 && (i / 1000) % 10 == (i / 10) % 10) {
				ans++;
			}
		}
		System.out.println(ans);

	}

}
