adding to vector of vector<int>, check if element already present

[Paul McKenzie]

I am having some issues compiling. I am getting the following error,

The code I posted compiles successfully in Comeau C++ and Visual Studio 2010.

Where are these lines?

typedef std::vector<int> IntVect;
typedef std::vector<IntVect> IntVect2D;

I used typedefs, because it's easier to deal with rather than those long definitions.

Regards,

Paul McKenzie