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） If you Beforehand developed your Tiplr account applying Instagram, we kindly request that you modify your login obtain working with certainly one of the choices under, as a way to maintain utilizing your Tiplr ac... https://pearlaquatics.my/shop/page/4/