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) We won't hook up with the server for this app or Web-site at the moment. There could possibly be a lot of traffic or possibly a configuration mistake. Try out again later on, or contact the app or Site operator.... https://pearlaquatics.my/product/taiyo-cichlids-sticks/