struct rho : Moveable<rho> {
		int x,y,z;
	
		rho(int x,int y,int z) : x(x), y(y), z(z) {}
		rho() {}
	}r;

	unsigned GetHashValue(const rho& p)
	{
		return CombineHash(p.x, p.x, p.z);
	}

	bool operator==(const rho& a, const rho& b)
	{
		return a.x == b.x && a.y == b.y && a.z == b.z;
	}

	bool operator < (const rho& a, const rho& b){
		return a.x == b.x ? (a.y == b.y ? a.z < b.z : a.y < b.y) : a.x < b.x;
	}