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 emblems are both the assets of Central Yard & Pet Enterprise, its subsidiaries, divisions, affiliated and/or relevant corporations or maybe the assets of their respective homeowners. 回復/查看 ● ऐसे समय के लि... https://pearlaquatics.my/what-should-you-do-daily-if-you-have-an-aquarium/