import 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 cnt = 0;

		for (int i = a ; i <= b ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) cnt++;
		}
		System.out.println(cnt);
	}
} import java.util.*; util.* java public class Main {
	public static void main(String... args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int cnt = 0;

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

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

		for (int i = a ; i <= b ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) cnt++;
		}
		System.out.println(cnt);
	} 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 cnt = 0; cnt 0 for (int i = a ; i <= b ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) cnt++;
		} int i = a ; int i = a ; i a i <= b i b i++ i++ i {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) cnt++;
		} {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) cnt++;
		} if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) cnt++; 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 cnt++ cnt System.out.println(cnt) System.out.println System.out System System.out cnt 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 cnt = 0;

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

		for (int i = a ; i <= b ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) cnt++;
		}
		System.out.println(cnt);
	}
} Main
import 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 cnt = 0;

		for (int i = a ; i <= b ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) cnt++;
		}
		System.out.println(cnt);
	}
}
