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vital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 possibly the home of Central Yard & Pet Enterprise, its subsidiaries, divisions, affiliated and/or associated firms or the house of their respective house owners. 一個月 回復/查看 When picking Stay roc... https://pearlaquatics.my/product/aq-anti-internal-bacteria-100ml/