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 won't connect with the server for this application or Internet site at the moment. There may very well be too much visitors or a configuration mistake. Try out once more later on, or Make contact with the applica... https://pearlaquatics.my/category/blog/page/3/