using System;
using System.Linq;
using System.Collections.Generic;

namespace _02.BasicStackOperations
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = Console.ReadLine()
                .Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToArray();

            var numbers = Console.ReadLine()
                .Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToArray();

            var push = input[0];
            var pop = input[1];
            var find = input[2];
            var stack = new Stack<int>();

            PushNumbers(numbers, push, stack);
            PopNumbers(numbers, pop, stack);

            if (stack.Contains(find))
            {
                Console.WriteLine("true");
            }
            else
            {
                Console.WriteLine(stack.Min());
            }

        }

        private static void PopNumbers(int[] numbers, int pop, Stack<int> stack)
        {
            for (int i = 0; i < pop; i++)
            {
                stack.Pop();
            }
        }

        private static void PushNumbers(int[] numbers, int push, Stack<int> stack)
        {
            for (int i = 0; i < push; i++)
            {
                stack.Push(numbers[i]);
            }
        }

    }
}