import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;

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

	String s = "abcdefghijklmnopqrstuvwxyz";

	void run() throws FileNotFoundException {
		Scanner sc = new Scanner(System.in);
		seed = sc.nextInt();
		long gt = -1, el = Integer.MAX_VALUE;
		while (true) {
			int m = (int) ((gt + el) / 2);
			initialize();
			for (int i = 0; i < 10000001; ++i) {
				generate();
				if (w < m)
					++c1;
				else if (w == m)
					++c2;
				else
					++c3;
			}

			if (c1 + c2 >= 5000001) {
				el = m;
			} else {
				gt = m;
			}

			if (c1 + c2 >= 5000001 && c2 + c3 >= 5000001) {
				System.out.println(m);
				return;
			}
		}
	}

	long c1 = 0, c2 = 0, c3 = 0;

	long x = 0, y = 1, z = 2, w = 3;
	long seed;

	void initialize() {
		x = 0;
		x = seed;
		y = 1;
		z = 2;
		w = 3;
		c1 = 0;
		c2 = 0;
		c3 = 0;
	}

	long generate() {
		long t = (x ^ (x << 11)) & ((1L << 32) - 1);
		x = y & ((1L << 32) - 1);
		y = z & ((1L << 32) - 1);
		z = w & ((1L << 32) - 1);
		w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)) & ((1L << 32) - 1);
		return w;
	}

	void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}
}