import java.util.*;

class Main {
    //
    static final long MOD = 1_000_000_007; // 10^9+7
    static final int MAX = 2_147_483_646; // intの最大値
    static final int INF = 1_000_000_000; // 10^9

    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int ans = 0;
        for(int i = n;i <= m;i++){
            char[] s = String.valueOf(i).toCharArray();
            if(s[0]==s[4]&&s[1] == s[3])ans++;
        }
        System.out.println(ans);
    }
} import java.util.*; util.* java class Main {
    //
    static final long MOD = 1_000_000_007; // 10^9+7
    static final int MAX = 2_147_483_646; // intの最大値
    static final int INF = 1_000_000_000; // 10^9

    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int ans = 0;
        for(int i = n;i <= m;i++){
            char[] s = String.valueOf(i).toCharArray();
            if(s[0]==s[4]&&s[1] == s[3])ans++;
        }
        System.out.println(ans);
    }
} Main //
    static final long MOD = 1_000_000_007; // 10^9+7 MOD 1_000_000_007 static final int MAX = 2_147_483_646; // intの最大値 MAX 2_147_483_646 static final int INF = 1_000_000_000; // 10^9 INF 1_000_000_000 public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int ans = 0;
        for(int i = n;i <= m;i++){
            char[] s = String.valueOf(i).toCharArray();
            if(s[0]==s[4]&&s[1] == s[3])ans++;
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int ans = 0;
        for(int i = n;i <= m;i++){
            char[] s = String.valueOf(i).toCharArray();
            if(s[0]==s[4]&&s[1] == s[3])ans++;
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int m = sc.nextInt(); m sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for(int i = n;i <= m;i++){
            char[] s = String.valueOf(i).toCharArray();
            if(s[0]==s[4]&&s[1] == s[3])ans++;
        } int i = n; int i = n; i n i <= m i m i++ i++ i {
            char[] s = String.valueOf(i).toCharArray();
            if(s[0]==s[4]&&s[1] == s[3])ans++;
        } {
            char[] s = String.valueOf(i).toCharArray();
            if(s[0]==s[4]&&s[1] == s[3])ans++;
        } char[] s = String.valueOf(i).toCharArray(); s String.valueOf(i).toCharArray() String.valueOf(i).toCharArray String.valueOf(i) String.valueOf String i if(s[0]==s[4]&&s[1] == s[3])ans++; s[0]==s[4]&&s[1] == s[3] s[0]==s[4] s[0] s 0 s[4] s 4 s[1] == s[3] s[1] s 1 s[3] s 3 ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String args[] args
import java.util.*;

class Main {
    //
    static final long MOD = 1_000_000_007; // 10^9+7
    static final int MAX = 2_147_483_646; // intの最大値
    static final int INF = 1_000_000_000; // 10^9

    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int ans = 0;
        for(int i = n;i <= m;i++){
            char[] s = String.valueOf(i).toCharArray();
            if(s[0]==s[4]&&s[1] == s[3])ans++;
        }
        System.out.println(ans);
    }
}