You should be able to get the total current by treating it as the circuit in hint 3 first
The ideal ammeter acts like a conductor so the potential on the left hand side of the 2 right hand resistors is the equal and the potential on the right hand side of those resistors is equal... the resistors have equal value and the current in them both has got to add up to the total current you found before... so you can find the current in each of those resistors.
using a similar attack on the left resistors we can calculate the current in each of those resistors - they have the same potential difference across them but in this case the resistances are different so more current will flow through one than the other.