class BinaryTree<T> {
    private T value;
    private BinaryTree<T> left;
    private BinaryTree<T> right;
    
    public BinaryTree(T value) {
	this.value = value;
	this.left = null;
	this.right = null;
    }

    public BinaryTree(T value, BinaryTree<T> left, BinaryTree<T> right) {
	this.value = value;
	this.left = left;
	this.right = right;
    }

    public void setLeft(BinaryTree<T> left) {
	this.left = left;
    }

    public void setRight(BinaryTree<T> right) {
	this.right = right;
    }

    public void setValue(T value) {
	this.value = value;
    }
}