题解 | #放苹果#--找规律

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int num1 = in.nextInt();
        int num2 = in.nextInt();
        System.out.println(count(num1, num2));
    }

    private static int count(int num1, int num2) {
        if (num1 == 0 || num2 == 1) {
            return 1;
        } else if (num1 < num2) {
            return count(num1, num1);
        } else {
            return count(num1, num2 - 1) + count(num1 - num2, num2);
        }
    }
}