import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Stack;

public class Main implements Runnable {
    public static void main(String[] args) {
        new Thread(null,new Main(), "" ,Runtime.getRuntime().maxMemory()).start();
    }

    public void run() {
        FastScanner sc = new FastScanner();
        int n = sc.nextInt();
        long k = sc.nextLong();
        int[] dist = new int[n];
        int[] isVisited = new int[n];
        for(int i = 0;i < n;i++) dist[i] = sc.nextInt() - 1;
        Arrays.fill(isVisited, -1);
        
        Stack<Integer> stack = new Stack<>();
        stack.push(Integer.valueOf(0));
        List<Integer> route = new ArrayList<>(n + 10);
        int numMove = -1;
        int loopStart = -1;
        int loopEnd = -1;
        while(!stack.isEmpty()) {
            numMove++;
            Integer here = stack.pop();
            if(isVisited[here.intValue()] == -1) {
                isVisited[here.intValue()] = numMove;
                stack.push(Integer.valueOf(dist[here.intValue()]));
                route.add(here);
            }
            else {
                loopStart = isVisited[here.intValue()];
                loopEnd = numMove - 1;
                break;
            }
        }
        
        int ans = -1;
        if(k < loopStart) ans = route.get((int)k).intValue() + 1;
        else ans = route.get((int)((k - loopStart) % (route.size() - loopStart) + loopStart)).intValue() + 1;

        PrintWriter out =  new PrintWriter(System.out);
        out.println(ans);
        out.flush();
    }
}

class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }
    public double nextDouble() { return Double.parseDouble(next());}
}

Measured memory_bytes: 44360