package yukicoder;
import java.util.Arrays;
import java.util.Scanner;

public class No702 {
	Scanner in;
	String INPUT = "";
	
	void solve()
	{
		int seed = ni();
		long low = 0, high = 1L<<32;
		while(high - low > 1){
			long h = high+low>>1;
			x = seed;
			y = 1; z = 2; w = 3;
			int bal = 0;
			for(int i = 0;i < 10000001;i++){
				long v = generate();
				if(v <= h){
					bal--;
				}else{
					bal++;
				}
			}
			if(bal < 0){
				high = h;
			}else{
				low = h;
			}
		}
		System.out.println(high);
	}
	
	long x = 0, y = 1, z = 2, w = 3;
	long generate() { 
	    long t = (x^(x<<11))&(1L<<32)-1;
	    x = y;
	    y = z;
	    z = w;
	    w = ((w ^ (w >> 19)) ^ (t ^ (t >> 8))) & (1L<<32)-1;
	    return w;
	}

	
	void run() throws Exception
	{
		in = oj ? new Scanner(System.in) : new Scanner(INPUT);

		long s = System.currentTimeMillis();
		solve();
		tr(System.currentTimeMillis()-s+"ms");
	}
	
	public static void main(String[] args) throws Exception
	{
		new No702().run();
	}
	
	int ni() { return Integer.parseInt(in.next()); }
	long nl() { return Long.parseLong(in.next()); }
	double nd() { return Double.parseDouble(in.next()); }
	boolean oj = System.getProperty("ONLINE_JUDGE") != null;
	void tr(Object... o) { if(!oj)System.out.println(Arrays.deepToString(o)); }
}