/**
 * 
 */
package hu.herba.codejam;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;

/**
 * Base functionality, helper functions for CodeJam problem solver utilities.
 * 
 * @author csorbazoli
 */
public abstract class AbstractCodeJamBase {
    private static final String EXT_OUT = ".out";
    protected static final int STREAM_TYPE = 0;
    protected static final int FILE_TYPE = 1;
    protected static final int READER_TYPE = 2;
    private static final String DEFAULT_INPUT = "test_input";
    private static final String DEFAULT_OUTPUT = "test_output";

    private final File inputFolder;
    private final File outputFolder;

    public AbstractCodeJamBase(String[] args, int type) {
	String inputFolderName = AbstractCodeJamBase.DEFAULT_INPUT;
	String outputFolderName = AbstractCodeJamBase.DEFAULT_OUTPUT;
	if (args.length > 0) {
	    inputFolderName = args[0];
	}
	this.inputFolder = new File(inputFolderName);
	if (!this.inputFolder.exists()) {
	    this.showUsage("Input folder '" + this.inputFolder.getAbsolutePath() + "' not exists!");
	}
	if (args.length > 1) {
	    outputFolderName = args[1];
	}
	this.outputFolder = new File(outputFolderName);
	if (this.outputFolder.exists() && !this.outputFolder.canWrite()) {
	    this.showUsage("Output folder '" + this.outputFolder.getAbsolutePath() + "' not writeable!");
	} else if (!this.outputFolder.exists() && !this.outputFolder.mkdirs()) {
	    this.showUsage("Could not create output folder '" + this.outputFolder.getAbsolutePath() + "'!");
	}
	File[] inputFiles = this.inputFolder.listFiles();
	for (File inputFile : inputFiles) {
	    this.processInputFile(inputFile, type);
	}
    }

    /**
     * @return the inputFolder
     */
    public File getInputFolder() {
	return this.inputFolder;
    }

    /**
     * @return the outputFolder
     */
    public File getOutputFolder() {
	return this.outputFolder;
    }

    /**
     * @param input
     *            input reader
     * @param output
     *            output writer
     * @throws IOException
     *             in case input or output fails
     * @throws IllegalArgumentException
     *             in case the given input is invalid
     */
    @SuppressWarnings("unused")
    protected void process(BufferedReader reader, PrintWriter pw) throws IOException, IllegalArgumentException {
	System.out.println("NEED TO IMPLEMENT (reader/writer)!!!");
	System.exit(-2);
    }

    /**
     * @param input
     *            input file
     * @param output
     *            output file (will be overwritten)
     * @throws IOException
     *             in case input or output fails
     * @throws IllegalArgumentException
     *             in case the given input is invalid
     */
    protected void process(File input, File output) throws IOException, IllegalArgumentException {
	System.out.println("NEED TO IMPLEMENT (file/file)!!!");
	System.exit(-2);
    }

    /**
     * @param input
     *            input stream
     * @param output
     *            output stream
     * @throws IOException
     *             in case input or output fails
     * @throws IllegalArgumentException
     *             in case the given input is invalid
     */
    protected void process(InputStream input, OutputStream output) throws IOException, IllegalArgumentException {
	System.out.println("NEED TO IMPLEMENT (stream/stream)!!!");
	System.exit(-2);
    }

    /**
     * @param type
     * @param input
     * @param output
     */
    private void processInputFile(File input, int type) {
	long starttime = System.currentTimeMillis();
	System.out.println("Processing '" + input.getAbsolutePath() + "'...");
	File output = new File(this.outputFolder, input.getName() + AbstractCodeJamBase.EXT_OUT);
	if (type == AbstractCodeJamBase.STREAM_TYPE) {
	    InputStream is = null;
	    OutputStream os = null;
	    try {
		is = new FileInputStream(input);
		os = new FileOutputStream(output);
		this.process(is, os);
	    } catch (FileNotFoundException e) {
		this.showUsage("FileNotFound: " + e.getLocalizedMessage());
	    } catch (IllegalArgumentException excIA) {
		this.showUsage(excIA.getLocalizedMessage());
	    } catch (Exception exc) {
		System.out.println("Program failed: " + exc.getLocalizedMessage());
		exc.printStackTrace(System.out);
	    } finally {
		if (is != null) {
		    try {
			is.close();
		    } catch (IOException e) {
			System.out.println("Failed to close input: " + e.getLocalizedMessage());
		    }
		}
		if (os != null) {
		    try {
			os.close();
		    } catch (IOException e) {
			System.out.println("Failed to close output: " + e.getLocalizedMessage());
		    }
		}
	    }
	} else if (type == AbstractCodeJamBase.READER_TYPE) {
	    BufferedReader reader = null;
	    PrintWriter pw = null;
	    try {
		reader = new BufferedReader(new FileReader(input));
		pw = new PrintWriter(output);
		this.process(reader, pw);
	    } catch (FileNotFoundException e) {
		this.showUsage("FileNotFound: " + e.getLocalizedMessage());
	    } catch (IllegalArgumentException excIA) {
		this.showUsage(excIA.getLocalizedMessage());
	    } catch (Exception exc) {
		System.out.println("Program failed: " + exc.getLocalizedMessage());
		exc.printStackTrace(System.out);
	    } finally {
		if (reader != null) {
		    try {
			reader.close();
		    } catch (IOException e) {
			System.out.println("Failed to close input: " + e.getLocalizedMessage());
		    }
		}
		if (pw != null) {
		    pw.close();
		}
	    }
	} else if (type == AbstractCodeJamBase.FILE_TYPE) {
	    try {
		this.process(input, output);
	    } catch (IllegalArgumentException excIA) {
		this.showUsage(excIA.getLocalizedMessage());
	    } catch (Exception exc) {
		System.out.println("Program failed: " + exc.getLocalizedMessage());
		exc.printStackTrace(System.out);
	    }
	} else {
	    this.showUsage("Unknown type given: " + type + " (accepted values: 0,1)");
	}
	System.out.println("  READY (" + (System.currentTimeMillis() - starttime) + " ms)");
    }

    /**
     * Read a single number from input
     * 
     * @param reader
     * @param purpose
     *            What is the purpose of given data
     * @return
     * @throws IOException
     * @throws IllegalArgumentException
     */
    protected int readInt(BufferedReader reader, String purpose) throws IOException, IllegalArgumentException {
	int ret = 0;
	String line = reader.readLine();
	if (line == null) {
	    throw new IllegalArgumentException("Invalid input: line is empty, it should be an integer (" + purpose + ")!");
	}
	try {
	    ret = Integer.parseInt(line);
	} catch (NumberFormatException excNF) {
	    throw new IllegalArgumentException("Invalid input: the first line '" + line + "' should be an integer (" + purpose + ")!");
	}
	return ret;
    }

    /**
     * Read array of integers
     * 
     * @param reader
     * @param purpose
     * @return
     */
    protected int[] readIntArray(BufferedReader reader, String purpose) throws IOException {
	int[] ret = null;
	String line = reader.readLine();
	if (line == null) {
	    throw new IllegalArgumentException("Invalid input: line is empty, it should be an integer list (" + purpose + ")!");
	}
	String[] strArr = line.split("\\s");
	int len = strArr.length;
	ret = new int[len];
	for (int i = 0; i < len; i++) {
	    try {
		ret[i] = Integer.parseInt(strArr[i]);
	    } catch (NumberFormatException excNF) {
		throw new IllegalArgumentException("Invalid input: line '" + line + "' should be an integer list (" + purpose + ")!");
	    }
	}
	return ret;
    }

    /**
     * Read array of strings
     * 
     * @param reader
     * @param purpose
     * @return
     */
    protected String[] readStringArray(BufferedReader reader, String purpose) throws IOException {
	String[] ret = null;
	String line = reader.readLine();
	if (line == null) {
	    throw new IllegalArgumentException("Invalid input: line is empty, it should be a string list (" + purpose + ")!");
	}
	ret = line.split("\\s");
	return ret == null ? new String[0] : ret;
    }

    /**
     * Basic usage pattern. Can be overwritten by current implementation
     * 
     * @param message
     *            Short message, describing the problem with given program
     *            arguments
     */
    protected void showUsage(String message) {
	if (message != null) {
	    System.out.println(message);
	}
	System.out.println("Usage:");
	System.out.println("\t" + this.getClass().getName() + " program");
	System.out.println("\tArguments:");
	System.out.println("\t\t<input folder>:\tpath of input folder (default: " + AbstractCodeJamBase.DEFAULT_INPUT + ").");
	System.out.println("\t\t               \tAll files will be processed in the folder");
	System.out.println("\t\t<output folder>:\tpath of output folder (default: " + AbstractCodeJamBase.DEFAULT_OUTPUT + ")");
	System.out.println("\t\t               \tOutput file name will be the same as input");
	System.out.println("\t\t               \tinput with extension '.out'");
	System.exit(-1);
    }
}

import java.io.*;
import java.lang.reflect.Array;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Comparator;
import java.util.StringTokenizer;

public class B implements Runnable {

    private static final String PROBLEM_ID = "B";

    private class TestCaseRunner {

        class Triple {
            int a, b, c;

            public Triple(int a, int b, int c) {
                this.a = a;
                this.b = b;
                this.c = c;
            }

            int worst() {
                return Math.min(Math.min(a, b), c);
            }

            int best() {
                return Math.max(Math.max(a, b), c);
            }

            int total() {
                return a + b + c;
            }

            boolean isValid() {
                return best() - worst() <= 2;
            }

            boolean isSurprising() {
                return best() - worst() == 2;
            }

        }

        int[] bestSurprising, bestNonSurprising;

        private void precalc() {
            bestSurprising = new int[31];
            Arrays.fill(bestSurprising, -1);

            bestNonSurprising = new int[31];
            Arrays.fill(bestNonSurprising, -1);

            for (int a = 0; a <= 10; a++)
                for (int b = 0; b <= 10; b++)
                    for (int c = 0; c <= 10; c++) {
                        Triple t = new Triple(a, b, c);
                        if (!t.isValid()) {
                            continue;
                        }

                        if (t.isSurprising()) {
                            bestSurprising[t.total()] = t.best();
                        } else {
                            bestNonSurprising[t.total()] = t.best();
                        }
                    }
        }

        public void handleCase() throws IOException {
            precalc();

            int n = nextInt();
            int s = nextInt();
            int p = nextInt();
            int[] a = new int[n];
            for (int i = 0; i < n; i++) {
                a[i] = nextInt();
            }

            int[][] d = new int[n + 1][s + 2];
            for (int[] v : d) {
                Arrays.fill(v, -1);
            }

            d[0][0] = 0;
            for (int i = 0; i < n; i++)
                for (int j = 0; j <= s; j++)
                    if (d[i][j] >= 0) {
                        // use a non-surprising triple
                        {
                            if (bestNonSurprising[a[i]] >= 0) {
                                int v = bestNonSurprising[a[i]] >= p ? 1 : 0;
                                d[i + 1][j] = Math.max(d[i + 1][j], d[i][j] + v);
                            }
                        }

                        // take a surprising triple
                        {
                            if (bestSurprising[a[i]] >= 0) {
                                int v = bestSurprising[a[i]] >= p ? 1 : 0;
                                d[i + 1][j + 1] = Math.max(d[i + 1][j + 1], d[i][j] + v);
                            }
                        }
                    }

            out.print(Math.max(d[n][s], 0));
        }

    }

    BufferedReader in;
    PrintWriter out;
    StringTokenizer tokenizer = new StringTokenizer("");

    public static void main(String[] args) {
        new Thread(new B()).start();
    }

    public void run() {
        File[] all = new File(".").listFiles();
        Arrays.sort(all, new Comparator<File>() {
            public int compare(File a, File b) {
                return a.getName().toLowerCase().compareTo(b.getName().toLowerCase());
            }
        });

        int processed = 0;
        for (File inFile : all)
            if (inFile.isFile()) {
                String name = inFile.getName().toLowerCase();
                if (name.startsWith(PROBLEM_ID.toLowerCase()) && name.endsWith(".in")) {
                    try {
                        runFile(inFile);
                        processed++;
                    } catch (Throwable t) {
                        throw new IllegalStateException("Fatal error", t);
                    }
                }
            }

        if (processed > 0) {
            System.out.println("Processed " + processed + " files for problem " + PROBLEM_ID);
        } else {
            System.err.println("No input files found for problem " + PROBLEM_ID);
        }
    }

    private void runFile(File inFile) throws IOException {
        in = new BufferedReader(new FileReader(inFile));
        out = new PrintWriter(new FileWriter(inFile.getName() + ".out"));
        long startTime = System.currentTimeMillis();

        System.out.println("Processing file: " + inFile.getName());
        int tc = nextInt();
        for (int p = 0; p < tc; p++) {
            long nowTime = System.currentTimeMillis();
            System.out.print("Running test case #" + (p + 1) + " out of " + tc);
            if (p > 0) {
                System.out.print(" (remaining time: " + remainingTime(p, tc, startTime, nowTime) + ")");
            }
            System.out.println();

            out.print("Case #" + (p + 1) + ": ");
            new TestCaseRunner().handleCase();
            out.println();
        }

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


    private String remainingTime(int p, int tc, long startTime, long nowTime) {
        double secondsPerTestCase = 1.0e-3 * (nowTime - startTime) / p;
        double secondsRemaining = (tc - p) * secondsPerTestCase;
        double minutesRemaining = secondsRemaining / 60;

        int minutes = (int) Math.floor(minutesRemaining);
        int seconds = (int) Math.round(secondsRemaining - minutes * 60);
        return minutes + " min " + seconds + " sec";
    }

    private String nextToken() throws IOException {
        while (!tokenizer.hasMoreTokens()) {
            String line = in.readLine();
            if (line == null) {
                return null;
            }
            tokenizer = new StringTokenizer(line);
        }
        return tokenizer.nextToken();
    }

    private int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }

    private BigInteger nextBigInt() throws IOException {
        return new BigInteger(nextToken());
    }

    private long nextLong() throws IOException {
        return Long.parseLong(nextToken());
    }

    private double nextDouble() throws IOException {
        return Double.parseDouble(nextToken());
    }

}