proximity.java

import java.io.*;
import java.util.*;
public class proximity {

	public static void main(String[] args) throws IOException {
		Scanner in = new Scanner(new File("proximity.in"));
		PrintWriter out = new PrintWriter(new FileWriter("proximity.out"));

		int n = in.nextInt();
		int k = in.nextInt();
		int[] breeds = new int[n];
		for(int i=0; i<n; i++) {
			breeds[i] = in.nextInt();
		}

		ArrayList<Integer> breedIDs = new ArrayList<Integer>();

		// 1. Set up window
		ArrayList<Integer> window = new ArrayList<Integer>(k);
		for(int i=0; i<=k; i++) {
			if(window.contains(breeds[i])) breedIDs.add(breeds[i]);
			window.add(breeds[i]);
		}

		// 2. Move window
		int fj = 0;

		while(fj+k+1 < n) {
			window.remove(0);
			fj++;
			if(window.contains(breeds[fj+k])) breedIDs.add(breeds[fj+k]);
			window.add(breeds[fj+k]);
		}

		int result = 0;
		for(int i=0; i<breedIDs.size(); i++) {
			if(breedIDs.get(i) > result) {
				result = breedIDs.get(i);
			}
		}

		System.out.print(result);
		out.print(result);


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

	}

}