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） We will not connect to the server for this application or Web-site at this time. There could be too much visitors or possibly a configuration error. Try all over again later, or Make contact with the app or website ... https://pearlaquatics.my/4-things-to-check-on-when-finding-the-best-aquarium-shop/