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[] number = new int[5];
    int cnt = 0;
    for(int i=a;i<=b;i++){
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    }
    System.out.println(cnt);
  }
} 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[] number = new int[5];
    int cnt = 0;
    for(int i=a;i<=b;i++){
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    }
    System.out.println(cnt);
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int[] number = new int[5];
    int cnt = 0;
    for(int i=a;i<=b;i++){
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    }
    System.out.println(cnt);
  } main {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int[] number = new int[5];
    int cnt = 0;
    for(int i=a;i<=b;i++){
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    }
    System.out.println(cnt);
  } 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[] number = new int[5]; number new int[5] 5 int cnt = 0; cnt 0 for(int i=a;i<=b;i++){
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    } int i=a; int i=a; i a i<=b i b i++ i++ i {
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    } {
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    } int num=i; num i int j=0; j 0 while(num>0){
        number[j++] = num%10;
        num/=10;
      } num>0 num 0 {
        number[j++] = num%10;
        num/=10;
      } number[j++] = num%10 number[j++] number j++ j num%10 num 10 num/=10 num 10 if(number[0]==number[4]&&number[1]==number[3]) cnt++; number[0]==number[4]&&number[1]==number[3] number[0]==number[4] number[0] number 0 number[4] number 4 number[1]==number[3] number[1] number 1 number[3] number 3 cnt++ cnt System.out.println(cnt) System.out.println System.out System System.out cnt 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[] number = new int[5];
    int cnt = 0;
    for(int i=a;i<=b;i++){
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    }
    System.out.println(cnt);
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int[] number = new int[5];
    int cnt = 0;
    for(int i=a;i<=b;i++){
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    }
    System.out.println(cnt);
  }
} 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[] number = new int[5];
    int cnt = 0;
    for(int i=a;i<=b;i++){
      int num=i;
      int j=0;
      while(num>0){
        number[j++] = num%10;
        num/=10;
      }
      if(number[0]==number[4]&&number[1]==number[3]) cnt++;
    }
    System.out.println(cnt);
  }
}