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 ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) {
				ans++;
			}
		}

		System.out.println(ans);

		sc.close();
	}
} 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 ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) {
				ans++;
			}
		}

		System.out.println(ans);

		sc.close();
	}
} 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 ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) {
				ans++;
			}
		}

		System.out.println(ans);

		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;

		for (int i = a; i <= b ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) {
				ans++;
			}
		}

		System.out.println(ans);

		sc.close();
	} 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 ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) {
				ans++;
			}
		} 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) {
				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 sc.close() sc.close sc 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 ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) {
				ans++;
			}
		}

		System.out.println(ans);

		sc.close();
	}
} 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 ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) {
				ans++;
			}
		}

		System.out.println(ans);

		sc.close();
	}
} 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 ; i++) {
			if (i / 10000 == i % 10 && i / 1000 % 10 == i / 10 % 10) {
				ans++;
			}
		}

		System.out.println(ans);

		sc.close();
	}
}
