import java.util.Scanner;
public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    
    int cou = 0;
    for(int i=a; i<=b; i++) {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    }
    System.out.println(cou);
    		}
} import java.util.Scanner; Scanner 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 cou = 0;
    for(int i=a; i<=b; i++) {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    }
    System.out.println(cou);
    		}
} Main public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    
    int cou = 0;
    for(int i=a; i<=b; i++) {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    }
    System.out.println(cou);
    		} main {
    
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    
    int cou = 0;
    for(int i=a; i<=b; i++) {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    }
    System.out.println(cou);
    		} 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 cou = 0; cou 0 for(int i=a; i<=b; i++) {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    } int i=a; int i=a; i a i<=b i b i++ i++ i {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    } {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    } if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    } i/10000 == i%10 i/10000 i 10000 i%10 i 10 {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    } if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		} i/1000-i/10000*10 == (i%100)/10 i/1000-i/10000*10 i/1000 i 1000 i/10000*10 i/10000 i 10000 10 (i%100)/10 (i%100) i 100 10 {
    			cou++;
    		} cou++ cou System.out.println(cou) System.out.println System.out System System.out cou 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 cou = 0;
    for(int i=a; i<=b; i++) {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    }
    System.out.println(cou);
    		}
} public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    
    int cou = 0;
    for(int i=a; i<=b; i++) {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    }
    System.out.println(cou);
    		}
} Main
import java.util.Scanner;
public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    
    int cou = 0;
    for(int i=a; i<=b; i++) {
    		if(i/10000 == i%10) {
    			if(i/1000-i/10000*10 == (i%100)/10) {
    			cou++;
    		}
    }
    }
    System.out.println(cou);
    		}
}