Powers of Two

powersof

import java.util.Scanner;
import java.lang.*;

public class powersof {
	public static void main (String [] args) {

		Scanner input = new Scanner(System.in);

		int x = 2;
		int n = input.nextInt();

		if (0 <= n && n <= 265) {

			double sum = Math.pow(x,n);

			System.out.println(sum);
		}

		else 

		System.out.println(0);

		}
		}