22.数的计算

题目

import java.util.Scanner;

public class Main {
	static int ans = 1;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		f(n);
		System.out.println(ans);
		sc.close();
	}
	public static void f(int n) {
		if(n == 1)
			return ;
		for(int i=1;i<=(n/2);i++) {
			f(i);
			ans++;
		}
	}
}