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();
      String num1, num2, num3, num4,num5;
      int ans,t1, t2, t3, t4,t5;
      ans = 0;
      for(;b>=a;a++){
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      }
		  System.out.println(ans);
   }
 } 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();
      String num1, num2, num3, num4,num5;
      int ans,t1, t2, t3, t4,t5;
      ans = 0;
      for(;b>=a;a++){
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      }
		  System.out.println(ans);
   }
 } Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
      int b = sc.nextInt();
      String num1, num2, num3, num4,num5;
      int ans,t1, t2, t3, t4,t5;
      ans = 0;
      for(;b>=a;a++){
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      }
		  System.out.println(ans);
   } main {
		Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
      int b = sc.nextInt();
      String num1, num2, num3, num4,num5;
      int ans,t1, t2, t3, t4,t5;
      ans = 0;
      for(;b>=a;a++){
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      }
		  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 String num1 num1 num2 num2 num3 num3 num4 num4 num5; num5 int ans ans t1 t1 t2 t2 t3 t3 t4 t4 t5; t5 ans = 0 ans 0 for(;b>=a;a++){
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      } ; b>=a b a a++ a++ a {
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      } {
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      } String s = String.valueOf(a); s String.valueOf(a) String.valueOf String a num1 = s.substring(0,1) num1 s.substring(0,1) s.substring s 0 1 num2 = s.substring(1,2) num2 s.substring(1,2) s.substring s 1 2 num3 = s.substring(2,3) num3 s.substring(2,3) s.substring s 2 3 num4 = s.substring(3,4) num4 s.substring(3,4) s.substring s 3 4 num5 = s.substring(4,5) num5 s.substring(4,5) s.substring s 4 5 t1 = Integer.parseInt(num1) t1 Integer.parseInt(num1) Integer.parseInt Integer num1 t2 = Integer.parseInt(num2) t2 Integer.parseInt(num2) Integer.parseInt Integer num2 t3 = Integer.parseInt(num3) t3 Integer.parseInt(num3) Integer.parseInt Integer num3 t4 = Integer.parseInt(num4) t4 Integer.parseInt(num4) Integer.parseInt Integer num4 t5 = Integer.parseInt(num5) t5 Integer.parseInt(num5) Integer.parseInt Integer num5 if(t1 == t5 && t2 == t4){
          ans = ans+1;
        } t1 == t5 && t2 == t4 t1 == t5 t1 t5 t2 == t4 t2 t4 {
          ans = ans+1;
        } ans = ans+1 ans ans+1 ans 1 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);
      int a = sc.nextInt();
      int b = sc.nextInt();
      String num1, num2, num3, num4,num5;
      int ans,t1, t2, t3, t4,t5;
      ans = 0;
      for(;b>=a;a++){
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      }
		  System.out.println(ans);
   }
 } public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
      int b = sc.nextInt();
      String num1, num2, num3, num4,num5;
      int ans,t1, t2, t3, t4,t5;
      ans = 0;
      for(;b>=a;a++){
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      }
		  System.out.println(ans);
   }
 } 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();
      String num1, num2, num3, num4,num5;
      int ans,t1, t2, t3, t4,t5;
      ans = 0;
      for(;b>=a;a++){
        String s = String.valueOf(a);
        num1 = s.substring(0,1);
        num2 = s.substring(1,2);
        num3 = s.substring(2,3);
        num4 = s.substring(3,4);
        num5 = s.substring(4,5);
        t1 = Integer.parseInt(num1);
        t2 = Integer.parseInt(num2);
        t3 = Integer.parseInt(num3);
        t4 = Integer.parseInt(num4);
        t5 = Integer.parseInt(num5);
        if(t1 == t5 && t2 == t4){
          ans = ans+1;
        }
      }
		  System.out.println(ans);
   }
 }
