题解 | #2的n次方计算#

import java.util.Scanner;
public class Main {
    public static void main(String[]args){
        Scanner in = new Scanner(System.in);
        int input = in.nextInt();
        int count=1;
        for(int i=0;i<input;i++)
        {
            count=2*count;
        }
        System.out.println(count);
    }
}