import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

package jp.funnything.competition.util;

import java.util.Comparator;

import com.google.common.base.Objects;

public class Pair< T1 , T2 > {
    public static < T1 extends Comparable< T1 > , T2 extends Comparable< T2 > > Comparator< Pair< T1 , T2 > > getFirstComarator() {
        return new Comparator< Pair< T1 , T2 > >() {
            @Override
            public int compare( final Pair< T1 , T2 > o1 , final Pair< T1 , T2 > o2 ) {
                final int c = o1.first.compareTo( o2.first );
                return c != 0 ? c : o1.second.compareTo( o2.second );
            }
        };
    }

    public static < T1 extends Comparable< T1 > , T2 extends Comparable< T2 > > Comparator< Pair< T1 , T2 > > getSecondComarator() {
        return new Comparator< Pair< T1 , T2 > >() {
            @Override
            public int compare( final Pair< T1 , T2 > o1 , final Pair< T1 , T2 > o2 ) {
                final int c = o1.second.compareTo( o2.second );
                return c != 0 ? c : o1.first.compareTo( o2.first );
            }
        };
    }

    public T1 first;
    public T2 second;

    public Pair( final Pair< T1 , T2 > that ) {
        this.first = that.first;
        this.second = that.second;
    }

    public Pair( final T1 first , final T2 second ) {
        this.first = first;
        this.second = second;
    }

    @Override
    public boolean equals( final Object obj ) {
        if ( this == obj ) {
            return true;
        }

        if ( obj == null || getClass() != obj.getClass() ) {
            return false;
        }

        final Pair< ? , ? > that = ( Pair< ? , ? > ) obj;

        return Objects.equal( this.first , that.first ) && Objects.equal( this.first , that.first );
    }

    @Override
    public int hashCode() {
        final int prime = 31;

        int result = 1;
        result = prime * result + ( first == null ? 0 : first.hashCode() );
        result = prime * result + ( second == null ? 0 : second.hashCode() );

        return result;
    }

    @Override
    public String toString() {
        return "Pair [first=" + first + ", second=" + second + "]";
    }
}
