With SUBNETTING you will be able to get following results :

1st subnet : NETWORK ID - 10.0.0.0                                                 3rd subnet : NETWORK ID - 10.128.0.0
                    BROADCAST ID- 10.63.255.255                                                         BROADCAST ID - 10.191.255.255
                    SUBNET MASK - 255.192.0.0                                                             SUBNET MASK - 255.192.0.0

2nd subnet : NETWORK ID - 10.64.0.0                                              4th subnet : NETWORK ID - 10.192.0.0
                    BROADCAST ID - 10.127.255.255                                                       BROADCAST ID - 10.255.255.255
                    SUBNET MASK - 255.192.0.0                                                              SUBNET MASK - 255.192.0.0