说明：  装备盒问题。 大意是给出一个矩形地板，你有一个底面为矩形的盒子必须放在上面而不超过地板边界。 现在给出地板的长(X)和宽(Y)，以及盒子的长(a)和宽(b)，问是否可能达到要求（即放上去不超过边界）
(equipment box problem. The effect is given a rectangular floor, you have a rectangular bottom of the box must be on the top floor and not over the border. Now the floor is long (X) and the width (Y), and the long box (a) and width (b), asked whether the possible requirements (that is, take up no more than borders))