public class Pasangan<K, V> {
    private final K kiri;
    private final V kanan;

    public Pasangan(K kiri, V kanan) {
        this.kiri = kiri;
        this.kanan = kanan;
    }

    public K getKiri() {
        return kiri;
    }

    public V getKanan() {
        return kanan;
    }

    @Override
    public String toString() {
        return "(" + kiri + ", " + kanan + ")";
    }
}