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