import java.io.IOException;
import java.util.InputMismatchException;
import java.util.LinkedList;
import java.util.Queue;

public class Main {
	int n;
	int[] step, memo;

	int bfs() {
		class Q implements Comparable<Q> {
			int pos, dep;

			Q(int pos, int dep) {
				this.pos = pos;
				this.dep = dep;
			}

			public int compareTo(Q o) {
				return this.pos != o.pos ? this.pos - o.pos : this.dep - o.dep;
			}
		}
		Queue<Q> queue = new LinkedList<Q>();
		queue.add(new Q(1, 0));
		boolean[] visit = new boolean[n];

		while (!queue.isEmpty()) {
			Q q = queue.poll();
			int pos = q.pos;
			int dep = q.dep;
			if (pos == n) {
				return dep + 1;
			}
			if (visit[pos])
				continue;
			visit[pos] = true;

			int s = step[pos];
			if (0 <= pos - s)
				queue.add(new Q(pos - s, dep + 1));
			if (pos + s <= n)
				queue.add(new Q(pos + s, dep + 1));
		}
		return -1;
	}

	void run() {
		MyScanner sc = new MyScanner();
		n = sc.nextInt();
		step = new int[n];
		for (int i = 0; i < n; i++) {
			step[i] = Integer.bitCount(i);
		}
		System.out.println(bfs());
	}

	public static void main(String[] args) {
		new Main().run();
	}

	public void mapDebug(int[][] a) {
		System.out.println("--------map display---------");
		for (int i = 0; i < a.length; i++) {
			for (int j = 0; j < a[i].length; j++) {
				System.out.printf("%3d ", a[i][j]);
			}
			System.out.println();
		}
		System.out.println("----------------------------" + '\n');
	}

	class MyScanner {
		int read() {
			try {
				return System.in.read();
			} catch (IOException e) {
				throw new InputMismatchException();
			}
		}

		boolean isSpaceChar(int c) {
			return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
		}

		boolean isEndline(int c) {
			return c == '\n' || c == '\r' || c == -1;
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		int[] nextIntArray(int n) {
			int[] array = new int[n];
			for (int i = 0; i < n; i++)
				array[i] = nextInt();
			return array;
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		long[] nextLongArray(int n) {
			long[] array = new long[n];
			for (int i = 0; i < n; i++)
				array[i] = nextLong();
			return array;
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		double[] nextDoubleArray(int n) {
			double[] array = new double[n];
			for (int i = 0; i < n; i++)
				array[i] = nextDouble();
			return array;
		}

		String next() {
			int c = read();
			while (isSpaceChar(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isSpaceChar(c));
			return res.toString();
		}

		String[] nextStringArray(int n) {
			String[] array = new String[n];
			for (int i = 0; i < n; i++)
				array[i] = next();

			return array;
		}

		String nextLine() {
			int c = read();
			while (isEndline(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isEndline(c));
			return res.toString();
		}
	}
}