package com.company;

import java.util.*;

public class experiment {
    public static void main(String[] args) {
        Scanner sc = new Scanner (System.in);

        ArrayDeque<Integer> stack = new ArrayDeque<>();
        String[] token = sc.nextLine().split("\\s+");
        int n = Integer.parseInt(token[0]);
        int sToRemove = Integer.parseInt(token[1]);
        int xToCheck = Integer.parseInt(token[2]);

        String[] tokens = sc.nextLine().split("\\s+");
        for (int i = 0; i < tokens.length; i++) {
            stack.offer(Integer.parseInt(tokens[i]));
        }

        for (int i = 0; i <sToRemove ; i++) {
            stack.pop();
        }

        if (stack.contains(xToCheck)){
            System.out.println("true");
        }else if (stack.isEmpty()){
            System.out.println("0");
        }
        else {
            System.out.println(Collections.min(stack));
        }


    }
}