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++) {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				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; i++) {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				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; i++) {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				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; i++) {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				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; i++) {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				ans++;
			}
		} int i =A; int i =A; i A i<=B i B i++ i++ i {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				ans++;
			}
		} {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				ans++;
			}
		} int first = i/10000%10; first i/10000%10 i/10000 i 10000 10 int second = i/1000%10; second i/1000%10 i/1000 i 1000 10 int forth =i/10%10; forth i/10%10 i/10 i 10 10 int fifth = i%10; fifth i%10 i 10 if (first==fifth&&second==forth) {
				ans++;
			} first==fifth&&second==forth first==fifth first fifth second==forth second forth {
				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; i++) {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				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; i++) {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				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; i++) {
			int first = i/10000%10;
			int second = i/1000%10;
			int forth =i/10%10;
			int fifth = i%10;
			if (first==fifth&&second==forth) {
				ans++;
			}
		}
		System.out.println(ans);
//------------------------------------------------------------
	}
}