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 cnt = 0;
        for (int i = a; i <= b; i++) {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                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();
        int b = sc.nextInt();

        int cnt = 0;
        for (int i = a; i <= b; i++) {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                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++) {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                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++) {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                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++) {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                cnt++;
        } int i = a; int i = a; i a i <= b i b i++ i++ i {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                cnt++;
        } {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                cnt++;
        } int r2 = i % 10; r2 i % 10 i 10 int r1 = i % 100 / 10; r1 i % 100 / 10 i % 100 i 100 10 int l1 = i % 10000 / 1000; l1 i % 10000 / 1000 i % 10000 i 10000 1000 int l2 = i / 10000; l2 i / 10000 i 10000 if (r2 == l2 && r1 == l1)
                cnt++; r2 == l2 && r1 == l1 r2 == l2 r2 l2 r1 == l1 r1 l1 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++) {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                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++) {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                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();
        int b = sc.nextInt();

        int cnt = 0;
        for (int i = a; i <= b; i++) {
            int r2 = i % 10;
            int r1 = i % 100 / 10;
            int l1 = i % 10000 / 1000;
            int l2 = i / 10000;
            
            if (r2 == l2 && r1 == l1)
                cnt++;
        }

        System.out.println(cnt);
    }
}
