package codejam;

import fixjava.Pair;

public class Utils {

	public static long minLong(long firstVal, long... otherVals) {
		long minVal = firstVal;
		for (int i = 0; i < otherVals.length; i++)
			minVal = Math.min(firstVal, otherVals[i]);
		return minVal;
	}

	public static int minInt(int firstVal, int... otherVals) {
		int minVal = firstVal;
		for (int i = 0; i < otherVals.length; i++)
			minVal = Math.min(firstVal, otherVals[i]);
		return minVal;
	}

	public static float minFloat(float firstVal, float... otherVals) {
		float minVal = firstVal;
		for (int i = 0; i < otherVals.length; i++)
			minVal = Math.min(firstVal, otherVals[i]);
		return minVal;
	}

	/**
	 * ArgMin returned as a Pair<Integer, Integer>(index, value). Array must
	 * have at least one value.
	 */
	public static Pair<Integer, Integer> argMin(int[] arr) {
		int min = arr[0];
		int argMin = 0;
		for (int i = 1; i < arr.length; i++) {
			if (arr[i] < min) {
				min = arr[i];
				argMin = i;
			}
		}
		return new Pair<Integer, Integer>(argMin, min);
	}

	/**
	 * ArgMax returned as a Pair<Integer, Integer>(index, value). Array must
	 * have at least one value.
	 */
	public static Pair<Integer, Integer> argMax(int[] arr) {
		int max = arr[0];
		int argMax = 0;
		for (int i = 1; i < arr.length; i++) {
			if (arr[i] > max) {
				max = arr[i];
				argMax = i;
			}
		}
		return new Pair<Integer, Integer>(argMax, max);
	}

}

import java.io.*;

public class B extends CodeJammer {

	public void process() throws IOException {
		int[] input = reader.readArray();
		int n = input[0];
		int s = input[1];
		int p = input[2];
		int auto =0; //scores that reach p automatically
		int poss = 0; //scores that can reach p with surprise
		for (int i=3; i<n+3; i++) {
			int score = input[i];
			int def = (score/3);
			int mod = (score%3);
			if (mod != 0) def++;//ceiling, not floor
			if (def >= p) auto++;
			else if (def == p-1 && def > 0 && mod != 1) poss++;
		}
		if (poss > s) poss = s; //cap number of surprising scores that reach p
		output(auto+poss);
	}

	public static void main(String[] args) {
		B b = new B();
		b.run(args);
	}

}
