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critical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 home of Central Back garden & Pet Corporation, its subsidiaries, divisions, affiliated and/or similar providers or perhaps the home in their respective house owners. 兩天 ● Each individua... https://pearlaquatics.my/4-things-to-maintain-when-having-an-aquarium/