import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;


public class C_RecycledNumbers {

	//static String inputFile = "C_Sample.in";	
	static String inputFile = "C-small-attempt1.in";	
	//static String inputFile = "C-large-attempt0.in";

	public static void main(String[] args) {		
		List<String> input = null;
		List<String> output = new ArrayList<String>();

		String outputFile = inputFile.split("\\.")[0]+".out";

		try {
			input = Files.readAllLines(Paths.get("Input\\"+inputFile), Charset.defaultCharset());
		} catch (IOException e) {
			e.printStackTrace();
		}

		int cases = Integer.parseInt(input.get(0));		
		
		long startTime = System.currentTimeMillis();

		for(int currentCase = 1;currentCase<cases+1;currentCase++) {
			String line = input.get(currentCase);
			String outputLine = "Case #" + currentCase + ": ";

			String[] splitted = line.split(" ");
			int A=Integer.parseInt(splitted[0]);
			int B=Integer.parseInt(splitted[1]);
			int result = 0;
			
			if((""+A).length()==(""+B).length()) {
				int min = Math.min(A, B);
				int max = Math.max(A, B);

				for(int m=min;m<=max;m++) {
					for(int n=m+1;n<=max;n++) {
						String m_string = ""+m;
						
						boolean isRecycled=false;
						
						for(int nbChars=1;nbChars<m_string.length();nbChars++) {
							String m_move = m_string.substring(0, nbChars);
							String m_keep = m_string.substring(nbChars, m_string.length());
							int attempt = Integer.parseInt(m_keep+m_move);
							if(n==attempt) {
								isRecycled=true;
								break;
							}
						}
						
						if(isRecycled) {
							result++;
						}
					}			
				}
			}
			
			outputLine +=result; 

			System.out.println(outputLine);			
			output.add(outputLine);	
		}
		
		long endTime = System.currentTimeMillis();
		long elapsedTime = endTime - startTime;
		System.out.println("Elapsed time: " + elapsedTime/1000F + "s");
		
		try {
			Files.write(Paths.get("Output\\"+outputFile), output, Charset.defaultCharset());
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}
