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;
		for(int i = A; i <= B; i++) {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				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;
		for(int i = A; i <= B; i++) {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				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;
		for(int i = A; i <= B; i++) {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				ans++;
			}
		}
		System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int ans = 0;
		for(int i = A; i <= B; i++) {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				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 for(int i = A; i <= B; i++) {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				ans++;
			}
		} int i = A; int i = A; i A i <= B i B i++ i++ i {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				ans++;
			}
		} {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				ans++;
			}
		} if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				ans++;
			} i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10 i / 10000 == i % 10 i / 10000 i 10000 i % 10 i 10 (i % 10000) / 1000 == (i % 100) / 10 (i % 10000) / 1000 (i % 10000) i 10000 1000 (i % 100) / 10 (i % 100) i 100 10 {
				ans++;
			} 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;
		for(int i = A; i <= B; i++) {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				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;
		for(int i = A; i <= B; i++) {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				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;
		for(int i = A; i <= B; i++) {
			if(i / 10000 == i % 10 && (i % 10000) / 1000 == (i % 100) / 10) {
				ans++;
			}
		}
		System.out.println(ans);
	}
}
