import java.util.HashMap;
 
class MapDem {
 
    final HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();
 
    public HashMap<Integer, Integer> getMap() {
        return map;
    }
 
    public void putValue(int key, int value) {
        map.put(key, value);
    }
 
    public static void main(String args[]) {
        MapDem demo = new MapDem();
 
        demo.putValue(1, 10);
        demo.putValue(1, 10);
 
        System.out.println(demo.getMap().size());
    }
}

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