import java.util.*;
 
class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    int b = sc.nextInt();
    int ans = 0;
    for(int i=a; i<=b; i++){
      if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      }
    }
    System.out.println(ans);

    sc.close();
  }
} import java.util.*; util.* java class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    int b = sc.nextInt();
    int ans = 0;
    for(int i=a; i<=b; i++){
      if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      }
    }
    System.out.println(ans);

    sc.close();
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    int b = sc.nextInt();
    int ans = 0;
    for(int i=a; i<=b; i++){
      if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      }
    }
    System.out.println(ans);

    sc.close();
  } 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++){
      if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      }
    }
    System.out.println(ans);

    sc.close();
  } 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++){
      if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      }
    } int i=a; int i=a; i a i<=b i b i++ i++ i {
      if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      }
    } {
      if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      }
    } if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      } i/10000 == i%10 i/10000 i 10000 i%10 i 10 {
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      } int x = i/10; x i/10 i 10 int y = i%10000; y i%10000 i 10000 if(x%10 == y/1000){
          ans++;
        } x%10 == y/1000 x%10 x 10 y/1000 y 1000 {
          ans++;
        } ans++ ans System.out.println(ans) System.out.println System.out System System.out ans sc.close() sc.close sc String[] args args
import java.util.*;
 
class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    int b = sc.nextInt();
    int ans = 0;
    for(int i=a; i<=b; i++){
      if(i/10000 == i%10){
        int x = i/10;
        int y = i%10000;
        if(x%10 == y/1000){
          ans++;
        }
      }
    }
    System.out.println(ans);

    sc.close();
  }
}