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 emblems are possibly the property of Central Backyard garden & Pet Enterprise, its subsidiaries, divisions, affiliated and/or associated providers or the home in their respective house owners. 兩天 查看 時間: 全... https://pearlaquatics.my/4-things-new-aquarists-keeping-flowerhorn-fish-should-maintain/