再用n2的时间（两重循环）枚举d-c，并将b-c的值作为键，在Hash数组中查找是否存在。如果能找到important相同的node点，则找到了一组满足 D-c = a+b的值。（注意检查a b c d 四个数不重复） All logos are either the house of Central Back garden & Pet Business, its subsidiaries, divisions, affiliated and/or connected providers or even the residence in their respective entrepreneurs. 一個月 排序: 發帖... https://pearlaquatics.my/4-things-you-can-get-from-a-renowned-aquarium-shop-kuala-lumpur/