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++){
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) 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++){
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) 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++){
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) 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++){
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) 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++){
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) cnt++;
        } int i=a; int i=a; i a i<=b i b i++ i++ i {
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) cnt++;
        } {
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) cnt++;
        } boolean flag = true; flag true String s = ""+i; s ""+i "" i for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            } int j=0; int j=0; j 0 j<2 j 2 j++ j++ j {
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            } {
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            } if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                } s.charAt(j)!=s.charAt(4-j) s.charAt(j) s.charAt s j s.charAt(4-j) s.charAt s 4-j 4 j {
                    flag = false;
                    break;
                } flag = false flag false break; if(flag == true) cnt++; flag == true flag true 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++){
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) 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++){
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) 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++){
            boolean flag = true;
            String s = ""+i;
            for(int j=0; j<2; j++){
                if(s.charAt(j)!=s.charAt(4-j)){
                    flag = false;
                    break;
                }
            }
            if(flag == true) cnt++;
        }
        System.out.println(cnt);
    }
}
