import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        for(int i = a; i <= b; i++){
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) ans++;
        }
        System.out.println(ans);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        for(int i = a; i <= b; i++){
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) ans++;
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        for(int i = a; i <= b; i++){
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) 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++){
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) 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++){
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) ans++;
        } int i = a; int i = a; i a i <= b i b i++ i++ i {
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) ans++;
        } {
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) ans++;
        } char[] c = String.valueOf(i).toCharArray(); c String.valueOf(i).toCharArray() String.valueOf(i).toCharArray String.valueOf(i) String.valueOf String i if(c[0] == c[4] && c[1] == c[3]) ans++; c[0] == c[4] && c[1] == c[3] c[0] == c[4] c[0] c 0 c[4] c 4 c[1] == c[3] c[1] c 1 c[3] c 3 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) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        for(int i = a; i <= b; i++){
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) ans++;
        }
        System.out.println(ans);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        for(int i = a; i <= b; i++){
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) ans++;
        }
        System.out.println(ans);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        for(int i = a; i <= b; i++){
            char[] c = String.valueOf(i).toCharArray();
            if(c[0] == c[4] && c[1] == c[3]) ans++;
        }
        System.out.println(ans);
    }
}
