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crucial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） In the event you Earlier created your Tiplr account employing Instagram, we kindly ask for that you alter your login accessibility applying one among the choices beneath, in an effort to keep utilizing your Tiplr ... https://pearlaquatics.my/author/jasun/page/2/