/** Initialize your data structure here. */
hmap=vector<int>(1000001,-1);
/** value will always be non-negative. */
void put(int key, int value) {
/** Returns the value to which the specified key is mapped, or -1 if this map contains no mapping for the key */
/** Removes the mapping of the specified value key if this map contains a mapping for the key */
* Your MyHashMap object will be instantiated and called as such:
* MyHashMap* obj = new MyHashMap();
* int param_2 = obj->get(key);