static void Main(string[] args)
{
HashMap hm = new HashMap();
hm.put(3, 3);
hm.put(103, 4);
hm.put(203, 5);
hm.put(4, 44);
int k = hm.get(4);
int k1 = hm.get(203);
hm.delete(203);
int k2 = hm.get(203);
int k3 = hm.get(4);
int k4 = 10;
}