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crucial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 trademarks are both the assets of Central Backyard & Pet Business, its subsidiaries, divisions, affiliated and/or related businesses or the assets in their respective proprietors. 一個月 排序: 發帖時間 ● हर मह... https://pearlaquatics.my/what-should-be-your-first-steps-to-set-up-an-aquarium/