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