// sample path

void gambler()
{
	vector<double> R;
	vector<double> x1;
	double g =100;
	double house =2000;

	for(int i =0; i<100000;++i)
	{
		x1.push_back(i+1);
		double x = gRandom->Integer(2);
		if(x ==1)
		{
			g = g+1;
			house = house+1;
		}
		else
		{
			g= g-1;
			house =house-1;
		}
		R.push_back(g);
		if(g == 0 || house ==0) break;

	}
	int n = R.size();

	TGraph* g1 = new TGraph(n,&x1[0],&R[0]);
	g1->Draw();
}