百钱买百鸡（很流行的）

package base.no4;

//百钱买百鸡
public class Maiji {
    public static void main(String[] args) {
        int a = 1, b = 1;
        while (a <= 20) {
            b=1;
            while (b <= 50) {
                if (5 * a + 2 * b + (100 - a - b) / 3 == 100
                        && (100 - a - b) % 3 == 0) {
                    System.out.println("公鸡"+a+"母鸡"+b+"小鸡"+(100-a-b));
                }
                b++;
            }
            a++;
        }

    }
}