using System;
using System.Collections.Generic;
using System.Windows;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Atcoder
{
    public class Program
    {
        static void Main(string[] args)
        {
            var r = ReadSplit();
            var n = r[0].Int();
            var k = r[1].Long();
            var r2 = ReadSplit();
            var l = new int[n];
            for (int i = 0; i < n; i++)
            {
                l[i] = r2[i].Int();
            }
            var l2 = new List<int>();
            var j = 1;
            var next = l[0];
            l2.Add(next);
            var count = new int[n + 1];
            while (j <= n)
            {
                next = l[next - 1];
                count[next]++;
                if (count[next] == 2) break;
                l2.Add(next);
                j++;
            }

            var ansl = new List<int>();
            ansl.Add(next);
            j = 1;
            count = new int[n + 1];
            while (j <= n)
            {
                next = l[next - 1];
                count[next]++;
                if (count[next] == 2) break;
                ansl.Add(next);
                j++;
            }
            if (ansl.Count > 0)
            {
                ansl.RemoveAt(ansl.Count - 1);
            }
            long ans = 0;
            if (k > n)
            {
                var cc = (k - l2.Count) % ansl.Count;
                if ((int)cc - 1 < 0)
                {
                    ans = l2[l2.Count - 1];
                }
                else
                {
                    ans = ansl[(int)cc - 1];
                }
            }
            else if (k <= n && k <= l2.Count)
            {
                if ((int)k - 1 < 0)
                {
                    return;
                }
                ans = l2[(int)k - 1];
                
            }
            else if (k <= n && k > l2.Count)
            {
                if(((int)k) - l2.Count - 1 < 0)
                {
                    return;
                }
                ans = ansl[((int)k) - l2.Count - 1];
            }

            WriteRead(ans);
        }

        public static string Read()
        {
            return Console.ReadLine();
        }

        public static string[] ReadSplit()
        {
            return Console.ReadLine().Split(' ');
        }

        public static void WriteRead(object str)
        {
            Console.WriteLine(str);
            Read();
        }

        public static void Write(object str)
        {
            Console.WriteLine(str);
        }

        private static bool ChangeMin<T>(ref T a, T b) where T : IComparable
        {
            if (a.CompareTo(b) > 0)
            {
                a = b;
                return true;
            }
            return false;
        }

        private static bool ChangekMax<T>(ref T a, T b) where T : IComparable
        {
            if (b.CompareTo(a) > 0)
            {
                a = b;
                return true;
            }
            return false;
        }
    }
}


public static class Extentions
{
    public static int Int(this object obj)
    {
        return int.Parse(obj.ToString());
    }

    public static long Long(this object obj)
    {
        return long.Parse(obj.ToString());
    }

    public static decimal Decimal(this object obj)
    {
        return decimal.Parse(obj.ToString());
    }

    public static double Double(this object obj)
    {
        return double.Parse(obj.ToString());
    }

    public static T2 GetValueZero<T1, T2>(this Dictionary<T1, T2> d, T1 key) where T2 : struct
    {
        T2 value;
        if (d.TryGetValue(key, out value))
        {
            return value;
        }
        return new T2();
    }
}



Measured memory_bytes: 41776