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） While in the occasion of a dispute as into the id of an entrant, the approved account holder of the e-mail handle used to enter is going to be considered for being the entrant. The “authorized account holder” would ... https://pearlaquatics.my/author/jasun/