import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int A = sc.nextInt();
        final int B = sc.nextInt();

        int ans = 0;
        for (int i = A; i <= B; i++) {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) 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);

        final int A = sc.nextInt();
        final int B = sc.nextInt();

        int ans = 0;
        for (int i = A; i <= B; i++) {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) ans++;
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int A = sc.nextInt();
        final int B = sc.nextInt();

        int ans = 0;
        for (int i = A; i <= B; i++) {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) ans++;
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);

        final int A = sc.nextInt();
        final int B = sc.nextInt();

        int ans = 0;
        for (int i = A; i <= B; i++) {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) ans++;
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) final int A = sc.nextInt(); A sc.nextInt() sc.nextInt sc final int B = sc.nextInt(); B sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for (int i = A; i <= B; i++) {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) ans++;
        } int i = A; int i = A; i A i <= B i B i++ i++ i {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) ans++;
        } {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) ans++;
        } String s = String.valueOf(i); s String.valueOf(i) String.valueOf String i String reverseS = new StringBuffer(s).reverse().toString(); reverseS new StringBuffer(s).reverse().toString() new StringBuffer(s).reverse().toString new StringBuffer(s).reverse() new StringBuffer(s).reverse new StringBuffer(s) if (s.equals(reverseS)) ans++; s.equals(reverseS) s.equals s reverseS 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);

        final int A = sc.nextInt();
        final int B = sc.nextInt();

        int ans = 0;
        for (int i = A; i <= B; i++) {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) ans++;
        }
        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int A = sc.nextInt();
        final int B = sc.nextInt();

        int ans = 0;
        for (int i = A; i <= B; i++) {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) 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);

        final int A = sc.nextInt();
        final int B = sc.nextInt();

        int ans = 0;
        for (int i = A; i <= B; i++) {
            String s = String.valueOf(i);
            String reverseS = new StringBuffer(s).reverse().toString();
            if (s.equals(reverseS)) ans++;
        }
        System.out.println(ans);
    }
}
