import java.util.Scanner;

public class Main {
	
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt(), b = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = a; i <= b; i++) {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		}
		
		System.out.println(cnt);
		
	}

} 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(), b = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = a; i <= b; i++) {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		}
		
		System.out.println(cnt);
		
	}

} Main public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt(), b = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = a; i <= b; i++) {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		}
		
		System.out.println(cnt);
		
	} main {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt(), b = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = a; i <= b; i++) {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) 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 b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int cnt = 0; cnt 0 for (int i = a; i <= b; i++) {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		} int i = a; int i = a; i a i <= b i b i++ i++ i {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		} {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		} String tmp = String.valueOf(i); tmp String.valueOf(i) String.valueOf String i String rev = new StringBuilder(tmp).reverse().toString(); rev new StringBuilder(tmp).reverse().toString() new StringBuilder(tmp).reverse().toString new StringBuilder(tmp).reverse() new StringBuilder(tmp).reverse new StringBuilder(tmp) if (tmp.equals(rev)) cnt++; tmp.equals(rev) tmp.equals tmp rev 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(), b = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = a; i <= b; i++) {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		}
		
		System.out.println(cnt);
		
	}

} public class Main {
	
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt(), b = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = a; i <= b; i++) {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		}
		
		System.out.println(cnt);
		
	}

} Main
import java.util.Scanner;

public class Main {
	
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt(), b = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = a; i <= b; i++) {
			
			String tmp = String.valueOf(i);
			
			String rev = new StringBuilder(tmp).reverse().toString();
			
			if (tmp.equals(rev)) cnt++;
			
		}
		
		System.out.println(cnt);
		
	}

}