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 ans = 0;

		for(int i=A;i<=B;i++) {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)ans++;
		}
		System.out.println(ans);
	}

} 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 ans = 0;

		for(int i=A;i<=B;i++) {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)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++) {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)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++) {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)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++) {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)ans++;
		} int i=A; int i=A; i A i<=B i B i++ i++ i {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)ans++;
		} {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)ans++;
		} int s = i/10000; s i/10000 i 10000 int t = i/1000 - s*10; t i/1000 - s*10 i/1000 i 1000 s*10 s 10 int u = i%10; u i%10 i 10 int v = (i%100 - u)/10; v (i%100 - u)/10 (i%100 - u) i%100 i 100 u 10 if(s==u && t==v)ans++; s==u && t==v s==u s u t==v t v 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++) {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)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++) {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)ans++;
		}
		System.out.println(ans);
	}

} 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 ans = 0;

		for(int i=A;i<=B;i++) {

			int s = i/10000;

			int t = i/1000 - s*10;

			int u = i%10;

			int v = (i%100 - u)/10;

			if(s==u && t==v)ans++;
		}
		System.out.println(ans);
	}

}
