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 cnt = 0;
		for(int i = a; i <= b; i++) {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				cnt++;
			}
		}
		System.out.println(cnt);
	}
} 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 cnt = 0;
		for(int i = a; i <= b; i++) {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				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 cnt = 0;
		for(int i = a; i <= b; i++) {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				cnt++;
			}
		}
		System.out.println(cnt);
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int cnt = 0;
		for(int i = a; i <= b; i++) {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				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 cnt = 0; cnt 0 for(int i = a; i <= b; i++) {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				cnt++;
			}
		} int i = a; int i = a; i a i <= b i b i++ i++ i {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				cnt++;
			}
		} {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				cnt++;
			}
		} int fi = i / 10000; fi i / 10000 i 10000 int on = i % 10; on i % 10 i 10 int fo = i / 1000 % 10; fo i / 1000 % 10 i / 1000 i 1000 10 int tw = i % 100 / 10 ; tw i % 100 / 10 i % 100 i 100 10 if(fi == on && fo == tw) {
				cnt++;
			} fi == on && fo == tw fi == on fi on fo == tw fo tw {
				cnt++;
			} 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 cnt = 0;
		for(int i = a; i <= b; i++) {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				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 cnt = 0;
		for(int i = a; i <= b; i++) {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				cnt++;
			}
		}
		System.out.println(cnt);
	}
} 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 cnt = 0;
		for(int i = a; i <= b; i++) {
			int fi = i / 10000;
			int on = i % 10;
			int fo = i / 1000 % 10;
			int tw = i % 100 / 10 ;  
			if(fi == on && fo == tw) {
				cnt++;
			}
		}
		System.out.println(cnt);
	}
}