class MyHashSet {

public:

    /** Initialize your data structure here. */

    MyHashSet() {

    }

    void add(int key) {

        if(set[key] == )

            set[key]++;

    }

    void remove(int key) {

        if(set[key] > )

            set[key]--;

    }

    /** Returns true if this set contains the specified element */

    bool contains(int key) {

        if(set[key] > )

            return true;

        return false;

    }

private:

    int set[] = {};

};