求解鸡兔同笼问题，输入鸡兔总数和腿总数，判断是否正确，若正确。输出鸡兔各自数量，否则输出输入有错

Question

求解鸡兔同笼问题，输入鸡兔总数和腿总数，判断是否正确，若正确。输出鸡兔各自数量，否则输出：输入有错

Answer 1

def solve_chicken_rabbit(total_num, total_legs):
    rabbit_num = (total_legs - 2 * total_num) / 2
    chicken_num = total_num - rabbit_num
    if rabbit_num >= 0 and chicken_num >= 0 and rabbit_num.is_integer() and chicken_num.is_integer():
        return int(chicken_num), int(rabbit_num)
    else:
        return "输入有错"

chicken, rabbit = solve_chicken_rabbit(20, 56)
if chicken != "输入有错":
    print("鸡的数量是", chicken)
    print("兔子的数量是", rabbit)
else:
    print("输入有错")