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important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） Within the function of the dispute as to the identity of the entrant, the approved account holder of the e-mail tackle accustomed to enter will be considered to get the entrant. The “approved account holder” wou... https://pearlaquatics.my/shop/page/3/