/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package year_2012.qualification;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Set;

/**
 *
 * @author paul
 * @date 14 Apr 2012
 */
public class QuestionC {

    private static Set<Integer> getCycle(int x) {

        String s = Integer.toString(x);
        Set<Integer> set = new HashSet<Integer>();
        set.add(x);
        for (int c = 1; c < s.length(); c++) {
            String t = s.substring(c).concat(s.substring(0, c));
            set.add(Integer.parseInt(t));
        }
        return set;
        
    }

    private static Set<Integer> mask(Set<Integer> set, int a, int b) {
        Set<Integer> result = new HashSet<Integer>();

        for (int x : set) {
            if (x >= a && x <= b) {
                result.add(x);
            }
        }
        
        return result;

    }


    public static void main(String[] args) throws FileNotFoundException, IOException {

        String question = "C";

//        String name = "large";
        String name = "small-attempt0";
//        String name = "test";

        String filename = String.format("%s-%s", question, name);

        BufferedReader input = new BufferedReader(
                new FileReader(String.format("/home/paul/Documents/code-jam/2012/qualification/%s.in",
                filename)));

        String firstLine = input.readLine();

        PrintWriter pw = new PrintWriter(new File(
                String.format("/home/paul/Documents/code-jam/2012/qualification/%s.out", filename)));


        int T = Integer.parseInt(firstLine);

        // Loop through test cases.
        for (int i = 0; i < T; i++) {

//             Read data.
            String[] tokens = input.readLine().split(" ");

//            int N = Integer.parseInt(input.readLine());

            int A = Integer.parseInt(tokens[0]);
            int B = Integer.parseInt(tokens[1]);

//            System.out.format("%d, %d\n", A, B);

            boolean[] used = new boolean[B+1];
            int total = 0;
            for (int n = A; n <= B; n++) {
                if (!used[n]) {
                    Set<Integer> set = mask(getCycle(n), A, B);
                    int k = set.size();
                    total += (k * (k-1))/2;
                    for (int m : set) {
                        used[m] = true;
                    }
                }
            }

            pw.format("Case #%d: %d\n", i + 1, total);
        }

        pw.close();

    }

}

package fixjava;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Iterator;

/**
 * Iterator that iterates over the lines of the file and then closes it after the last line has been read.
 * 
 * e.g.
 * 
 * <code>
 * 
 * for (String line : new FileLineIterator("in.txt"))
 *     System.out.println(line);
 * 
 * for (NumberedLine nl : new FileLineIterator("in.txt").withLineNumbers())
 *     System.out.println(nl.getLineNum() + " " + nl.getLine());
 *     
 * </code>
 */
public class FileLineIterator implements Iterable<String>, Iterator<String> {

	private BufferedReader reader;
	String nextLine = null;
	boolean nextLineAlreadyFetched = false;
	private int lineNum = -1;

	// ------------------------------------------------------------------------------------------

	/**
	 * Construct an iterator that iterates over the lines of the file and then closes it after the last line has been read.
	 * 
	 * e.g. for (String line : new FileLineIterator("in.txt")) System.out.println(line);
	 * 
	 * @throws IllegalArgumentException
	 *             on any I/O exception, so you can use this directly in foreach loops.
	 */
	public FileLineIterator(String filename) {
		this(new File(filename));
	}

	/**
	 * Construct an iterator that iterates over the lines of the file and then closes it after the last line has been read.
	 * 
	 * e.g. for (String line : new FileLineIterator(file)) System.out.println(line);
	 * 
	 * @throws IllegalArgumentException
	 *             on any I/O exception, so you can use this directly in foreach loops.
	 */
	public FileLineIterator(File file) {
		try {
			reader = new BufferedReader(new FileReader(file), 1024 * 1024);
		} catch (FileNotFoundException e) {
			throw new IllegalArgumentException(e);
		}
	}

	@Override
	public Iterator<String> iterator() {
		return this;
	}

	// ------------------------------------------------------------------------------------------

	private String getNextLine(boolean consume) {
		if (!nextLineAlreadyFetched) {
			try {
				nextLine = reader.readLine();
				lineNum++;
				nextLineAlreadyFetched = true;
				if (nextLine == null)
					// Close reader after last line has been read
					reader.close();
			} catch (IOException e) {
				if (reader != null)
					try {
						reader.close();
					} catch (Exception e2) {
					}
				throw new IllegalArgumentException(e);
			}
		}
		String retVal = nextLine;
		if (consume) {
			nextLine = null;
			nextLineAlreadyFetched = false;
		}
		return retVal;
	}

	/** Return the current zero-indexed line number -- only returns the correct line number after a call to hasNext() or next() */
	public int getLineNum() {
		return lineNum;
	}

	@Override
	public boolean hasNext() {
		return getNextLine(false) != null;
	}

	@Override
	public String next() {
		return getNextLine(true);
	}

	@Override
	public void remove() {
		getNextLine(true);
	}

	// ------------------------------------------------------------------------------------------

	public class NumberedLine {
		String line;
		int lineNum;

		public NumberedLine(String line, int lineNum) {
			this.line = line;
			this.lineNum = lineNum;
		}

		public String getLine() {
			return line;
		}

		public int getLineNum() {
			return lineNum;
		}
	}

	/** Return an Iterable<NumberedLine> that includes the line number with each line */
	public Iterable<NumberedLine> withLineNumbers() {
		final FileLineIterator fileLineIter = this;
		return new Iterable<NumberedLine>() {
			@Override
			public Iterator<NumberedLine> iterator() {
				return new Iterator<NumberedLine>() {
					@Override
					public void remove() {
						fileLineIter.remove();
					}

					@Override
					public NumberedLine next() {
						String line = fileLineIter.next();
						int lineNum = fileLineIter.getLineNum();
						return new NumberedLine(line, lineNum);
					}

					@Override
					public boolean hasNext() {
						return fileLineIter.hasNext();
					}
				};
			}
		};
	}
}
