using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization;
using System.Text.RegularExpressions;
using System.Text;
using System;

class Solution {



    // Complete the findNumber function below.
    static string findNumber(List<int> arr, int k) {


    }

    static void Main(string[] args) {
        TextWriter textWriter = new StreamWriter(@System.Environment.GetEnvironmentVariable("OUTPUT_PATH"), true);

        int arrCount = Convert.ToInt32(Console.ReadLine().Trim());

        List<int> arr = new List<int>();

        for (int i = 0; i < arrCount; i++) {
            int arrItem = Convert.ToInt32(Console.ReadLine().Trim());
            arr.Add(arrItem);
        }

        int k = Convert.ToInt32(Console.ReadLine().Trim());

        string res = findNumber(arr, k);

        textWriter.WriteLine(res);

        textWriter.Flush();
        textWriter.Close();
    }
}