It's not specified what kind of ice it is; maybe it's so huge compared to the size of the room that bringing it in will lower the temperature in the room. Again, the air pressure is not specified, and the melting point of ice is taken at a certain pressure. It is not specified whether the excess cold/heat is removed or not. So, here's my take on it. :)\
Gentlemen physicists, here's another problem for you:
how many cases are there in the Russian language?
answer options:
a) seven
b) six
c) what, are there cases in the Russian language?
d) my own answer
I could have come up with something more elaborate, but the basic information is available on Wikipedia.