题解 | #跳台阶扩展问题#
跳台阶扩展问题
http://www.nowcoder.com/practice/953b74ca5c4d44bb91f39ac4ddea0fee
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println(1 << (in.nextInt() - 1));
}
}
