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） While in the occasion of the dispute as on the identity of the entrant, the authorized account holder of the email handle used to enter are going to be considered for being the entrant. The “approved account hold... https://pearlaquatics.my/author/sushant/page/9/