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) Live crops tend to be more than simply ornamental aspects in the freshwater aquarium. They add to oxygenation, assistance manage water quality, and supply pure habitats for fish. 排序: 發帖時間 ● चैनल के खास फ़ायदें... https://pearlaquatics.my/product-category/fish-food/