
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int a = sc.nextInt();
		int b = sc.nextInt();
		int res = 0;
		
		for (int i = a; i <= b; i++) {
			if (isPalindromic(i)) {
				res++;
			}
		}
		System.out.println(res);
	}
  
	private static boolean isPalindromic(int n) {
		int num = n;
		int total = 0;
		while (num != 0) {
			total *= 10;
			total += (num % 10);
			num /= 10;
		}
		return n == total;
	}
	
    static class FastReader {
	    BufferedReader br;
	    StringTokenizer st;
	
	    public FastReader() {
	      br = new BufferedReader(new InputStreamReader(System.in));
	    }
	  
	    String next() { 
	      while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      }
	      return st.nextToken();
	    }
	
	    int nextInt() {
	      return Integer.parseInt(next());
	    }
	
	    long nextLong() {
	      return Long.parseLong(next());
	    }
	
	    double nextDouble() { 
	      return Double.parseDouble(next());
	    }
	
	    String nextLine() {
	      String str = "";
	        try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        return str;
	      }
	  }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.StringTokenizer; StringTokenizer java.util public class Main {
	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int a = sc.nextInt();
		int b = sc.nextInt();
		int res = 0;
		
		for (int i = a; i <= b; i++) {
			if (isPalindromic(i)) {
				res++;
			}
		}
		System.out.println(res);
	}
  
	private static boolean isPalindromic(int n) {
		int num = n;
		int total = 0;
		while (num != 0) {
			total *= 10;
			total += (num % 10);
			num /= 10;
		}
		return n == total;
	}
	
    static class FastReader {
	    BufferedReader br;
	    StringTokenizer st;
	
	    public FastReader() {
	      br = new BufferedReader(new InputStreamReader(System.in));
	    }
	  
	    String next() { 
	      while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      }
	      return st.nextToken();
	    }
	
	    int nextInt() {
	      return Integer.parseInt(next());
	    }
	
	    long nextLong() {
	      return Long.parseLong(next());
	    }
	
	    double nextDouble() { 
	      return Double.parseDouble(next());
	    }
	
	    String nextLine() {
	      String str = "";
	        try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        return str;
	      }
	  }
} Main public static void main(String[] args) {
		FastReader sc = new FastReader();
		int a = sc.nextInt();
		int b = sc.nextInt();
		int res = 0;
		
		for (int i = a; i <= b; i++) {
			if (isPalindromic(i)) {
				res++;
			}
		}
		System.out.println(res);
	} main {
		FastReader sc = new FastReader();
		int a = sc.nextInt();
		int b = sc.nextInt();
		int res = 0;
		
		for (int i = a; i <= b; i++) {
			if (isPalindromic(i)) {
				res++;
			}
		}
		System.out.println(res);
	} FastReader sc = new FastReader(); sc new FastReader() int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int res = 0; res 0 for (int i = a; i <= b; i++) {
			if (isPalindromic(i)) {
				res++;
			}
		} int i = a; int i = a; i a i <= b i b i++ i++ i {
			if (isPalindromic(i)) {
				res++;
			}
		} {
			if (isPalindromic(i)) {
				res++;
			}
		} if (isPalindromic(i)) {
				res++;
			} isPalindromic(i) isPalindromic i {
				res++;
			} res++ res System.out.println(res) System.out.println System.out System System.out res String[] args args private static boolean isPalindromic(int n) {
		int num = n;
		int total = 0;
		while (num != 0) {
			total *= 10;
			total += (num % 10);
			num /= 10;
		}
		return n == total;
	} isPalindromic {
		int num = n;
		int total = 0;
		while (num != 0) {
			total *= 10;
			total += (num % 10);
			num /= 10;
		}
		return n == total;
	} int num = n; num n int total = 0; total 0 while (num != 0) {
			total *= 10;
			total += (num % 10);
			num /= 10;
		} num != 0 num 0 {
			total *= 10;
			total += (num % 10);
			num /= 10;
		} total *= 10 total 10 total += (num % 10) total (num % 10) num 10 num /= 10 num 10 return n == total; n == total n total int n n static class FastReader {
	    BufferedReader br;
	    StringTokenizer st;
	
	    public FastReader() {
	      br = new BufferedReader(new InputStreamReader(System.in));
	    }
	  
	    String next() { 
	      while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      }
	      return st.nextToken();
	    }
	
	    int nextInt() {
	      return Integer.parseInt(next());
	    }
	
	    long nextLong() {
	      return Long.parseLong(next());
	    }
	
	    double nextDouble() { 
	      return Double.parseDouble(next());
	    }
	
	    String nextLine() {
	      String str = "";
	        try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        return str;
	      }
	  } FastReader BufferedReader br; br StringTokenizer st; st public FastReader() {
	      br = new BufferedReader(new InputStreamReader(System.in));
	    } FastReader {
	      br = new BufferedReader(new InputStreamReader(System.in));
	    } br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) String next() { 
	      while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      }
	      return st.nextToken();
	    } next { 
	      while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      }
	      return st.nextToken();
	    } while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      } st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      } try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        } catch (IOException  e) {
	          e.printStackTrace();
	        } IOException  e {
	          e.printStackTrace();
	        } e.printStackTrace() e.printStackTrace e {
	          st = new StringTokenizer(br.readLine());
	        } st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st int nextInt() {
	      return Integer.parseInt(next());
	    } nextInt {
	      return Integer.parseInt(next());
	    } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next long nextLong() {
	      return Long.parseLong(next());
	    } nextLong {
	      return Long.parseLong(next());
	    } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next double nextDouble() { 
	      return Double.parseDouble(next());
	    } nextDouble { 
	      return Double.parseDouble(next());
	    } return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next String nextLine() {
	      String str = "";
	        try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        return str;
	      } nextLine {
	      String str = "";
	        try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        return str;
	      } String str = ""; str "" try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        } catch (IOException e) {
	            e.printStackTrace();
	        } IOException e {
	            e.printStackTrace();
	        } e.printStackTrace() e.printStackTrace e {
	            str = br.readLine();
	        } str = br.readLine() str br.readLine() br.readLine br return str; str public class Main {
	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int a = sc.nextInt();
		int b = sc.nextInt();
		int res = 0;
		
		for (int i = a; i <= b; i++) {
			if (isPalindromic(i)) {
				res++;
			}
		}
		System.out.println(res);
	}
  
	private static boolean isPalindromic(int n) {
		int num = n;
		int total = 0;
		while (num != 0) {
			total *= 10;
			total += (num % 10);
			num /= 10;
		}
		return n == total;
	}
	
    static class FastReader {
	    BufferedReader br;
	    StringTokenizer st;
	
	    public FastReader() {
	      br = new BufferedReader(new InputStreamReader(System.in));
	    }
	  
	    String next() { 
	      while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      }
	      return st.nextToken();
	    }
	
	    int nextInt() {
	      return Integer.parseInt(next());
	    }
	
	    long nextLong() {
	      return Long.parseLong(next());
	    }
	
	    double nextDouble() { 
	      return Double.parseDouble(next());
	    }
	
	    String nextLine() {
	      String str = "";
	        try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        return str;
	      }
	  }
} public class Main {
	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int a = sc.nextInt();
		int b = sc.nextInt();
		int res = 0;
		
		for (int i = a; i <= b; i++) {
			if (isPalindromic(i)) {
				res++;
			}
		}
		System.out.println(res);
	}
  
	private static boolean isPalindromic(int n) {
		int num = n;
		int total = 0;
		while (num != 0) {
			total *= 10;
			total += (num % 10);
			num /= 10;
		}
		return n == total;
	}
	
    static class FastReader {
	    BufferedReader br;
	    StringTokenizer st;
	
	    public FastReader() {
	      br = new BufferedReader(new InputStreamReader(System.in));
	    }
	  
	    String next() { 
	      while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      }
	      return st.nextToken();
	    }
	
	    int nextInt() {
	      return Integer.parseInt(next());
	    }
	
	    long nextLong() {
	      return Long.parseLong(next());
	    }
	
	    double nextDouble() { 
	      return Double.parseDouble(next());
	    }
	
	    String nextLine() {
	      String str = "";
	        try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        return str;
	      }
	  }
} Main

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int a = sc.nextInt();
		int b = sc.nextInt();
		int res = 0;
		
		for (int i = a; i <= b; i++) {
			if (isPalindromic(i)) {
				res++;
			}
		}
		System.out.println(res);
	}
  
	private static boolean isPalindromic(int n) {
		int num = n;
		int total = 0;
		while (num != 0) {
			total *= 10;
			total += (num % 10);
			num /= 10;
		}
		return n == total;
	}
	
    static class FastReader {
	    BufferedReader br;
	    StringTokenizer st;
	
	    public FastReader() {
	      br = new BufferedReader(new InputStreamReader(System.in));
	    }
	  
	    String next() { 
	      while (st == null || !st.hasMoreElements()) {
	        try {
	          st = new StringTokenizer(br.readLine());
	        } catch (IOException  e) {
	          e.printStackTrace();
	        }
	      }
	      return st.nextToken();
	    }
	
	    int nextInt() {
	      return Integer.parseInt(next());
	    }
	
	    long nextLong() {
	      return Long.parseLong(next());
	    }
	
	    double nextDouble() { 
	      return Double.parseDouble(next());
	    }
	
	    String nextLine() {
	      String str = "";
	        try{
	            str = br.readLine();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        return str;
	      }
	  }
}
