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();
   
   int ans =0;
   int tmp10000=0;
   int tmp1000=0;
   int tmp100=0;
   int tmp10=0;
   int tmp1=0;
   int tmp;
   for(int i=A;i<=B;i++) 
   {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } 

   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();
   
   int ans =0;
   int tmp10000=0;
   int tmp1000=0;
   int tmp100=0;
   int tmp10=0;
   int tmp1=0;
   int tmp;
   for(int i=A;i<=B;i++) 
   {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } 

   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();
   
   int ans =0;
   int tmp10000=0;
   int tmp1000=0;
   int tmp100=0;
   int tmp10=0;
   int tmp1=0;
   int tmp;
   for(int i=A;i<=B;i++) 
   {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } 

   System.out.println(ans);
 } main {
   Scanner sc = new Scanner(System.in);
 
   int A = sc.nextInt();
   int B = sc.nextInt();
   
   int ans =0;
   int tmp10000=0;
   int tmp1000=0;
   int tmp100=0;
   int tmp10=0;
   int tmp1=0;
   int tmp;
   for(int i=A;i<=B;i++) 
   {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } 

   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 int ans =0; ans 0 int tmp10000=0; tmp10000 0 int tmp1000=0; tmp1000 0 int tmp100=0; tmp100 0 int tmp10=0; tmp10 0 int tmp1=0; tmp1 0 int tmp; tmp for(int i=A;i<=B;i++) 
   {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } int i=A; int i=A; i A i<=B i B i++ i++ i {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } tmp =i tmp i tmp1=tmp%10 tmp1 tmp%10 tmp 10 tmp= (tmp-tmp1)/10 tmp (tmp-tmp1)/10 (tmp-tmp1) tmp tmp1 10 tmp10=tmp%10 tmp10 tmp%10 tmp 10 tmp= (tmp-tmp10)/10 tmp (tmp-tmp10)/10 (tmp-tmp10) tmp tmp10 10 tmp100=tmp%10 tmp100 tmp%10 tmp 10 tmp= (tmp-tmp100)/10 tmp (tmp-tmp100)/10 (tmp-tmp100) tmp tmp100 10 tmp1000=tmp%10 tmp1000 tmp%10 tmp 10 tmp= (tmp-tmp1000)/10 tmp (tmp-tmp1000)/10 (tmp-tmp1000) tmp tmp1000 10 tmp10000=tmp%10 tmp10000 tmp%10 tmp 10 if(tmp1==tmp10000&&tmp10==tmp1000) ans++; tmp1==tmp10000&&tmp10==tmp1000 tmp1==tmp10000 tmp1 tmp10000 tmp10==tmp1000 tmp10 tmp1000 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);
 
   int A = sc.nextInt();
   int B = sc.nextInt();
   
   int ans =0;
   int tmp10000=0;
   int tmp1000=0;
   int tmp100=0;
   int tmp10=0;
   int tmp1=0;
   int tmp;
   for(int i=A;i<=B;i++) 
   {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } 

   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();
   
   int ans =0;
   int tmp10000=0;
   int tmp1000=0;
   int tmp100=0;
   int tmp10=0;
   int tmp1=0;
   int tmp;
   for(int i=A;i<=B;i++) 
   {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } 

   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();
   
   int ans =0;
   int tmp10000=0;
   int tmp1000=0;
   int tmp100=0;
   int tmp10=0;
   int tmp1=0;
   int tmp;
   for(int i=A;i<=B;i++) 
   {
     tmp =i;
     tmp1=tmp%10;
     tmp= (tmp-tmp1)/10;
     tmp10=tmp%10;
     tmp= (tmp-tmp10)/10;
     tmp100=tmp%10;
     tmp= (tmp-tmp100)/10;
     tmp1000=tmp%10;
     tmp= (tmp-tmp1000)/10;
     tmp10000=tmp%10;
     
     if(tmp1==tmp10000&&tmp10==tmp1000) ans++;
   } 

   System.out.println(ans);
 }
}