Question

I am trying to insert an item, into a map, which holds two other map.

map< map<int, int> , map<int, int> > GC;

map<int, int> A;
A.insert(pair<int,int>(1,1));
map<int, int>:: iterator p1 = A.begin();

map<int, int> B;
B.insert(pair<int,int>(2,3));
map<int, int>:: iterator p2 = B.begin();

GC.insert( pair< map<int,int>, map<int,int> > (*p1, *p2) );

Well, as presumed its not working.

How to do it?

EDIT:
It gives the following error:

E:\CB\test.cpp|20|error: no matching function for call to 'std::pair<std::map<int, int, std::less<int>, std::allocator<std::pair<const int, int> > >, std::map<int, int, std::less<int>, std::allocator<std::pair<const int, int> > > >::pair(std::pair<const int, int>&, std::pair<const int, int>&)'

Answer 1

I am not sure what are trying to achieve here …..

Your key and value needs to be an map object in order to work…
In that case only possibility is

GC.insert( pair< map<int,int>, map<int,int> > (A,B) );