题解 | #鸡兔同笼#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNextInt()){
            int n=sc.nextInt();
            if(n%2!=0){
                System.out.println("0 0");
            }else{
                int min,max;
                if(n%4==0){
                    min=n/4;
                    max=n/2;
                }else{
                    min=n/4;
                    min+=(n%4)/2;
                    max=n/2;
                }
                System.out.println(min+" "+max);
            }
        }
    }
}