SAP智力题 -- Wires between 2 rooms

There are 103 wires connnecting two rooms, you can see 103 wire ends in each room, you are allowed to enter each room once with a multimeter, at least how many resistors(100ohm) do you need to identify the corresponding ends of each wire? What if you have 2 kinds of resistors(100ohm and 200ohm)?
----Designed by Hansen Chen in 2009( https://www.sdn.sap.com/irj/scn/forum?forumID=410 )