IF either n1 or n2 matches ith root 's key, report  the presence by setting v1 or v2 as true and return  root (Note that if a key is ancestor of other, then the ancestor key becomes LCA)
if root . key == n1 : NEW_LINE INDENT v [ 0 ] = True NEW_LINE return root NEW_LINE DEDENT if root . key == n2 : NEW_LINE INDENT v [ 1 ] = True NEW_LINE return root NEW_LINE DEDENT