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critical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 app or Web-site at this time. There could possibly be an excessive amount of website traffic or perhaps a configuration error. Check out once more later, or contact the ... https://pearlaquatics.my/category/pearl-aquatics/page/4/