/**
 * Given two nested tuples a and b, return a tuple where the elements are the intersection of tuples a and b.
 *
 * @param a A nested tuple.
 * @param b A nested tuple.
 * @return The intersection of tuples a and b.
 *
 * Example:
 * '``
 * val a = setOf(setOf(1, 2), setOf(3, 4))
 * val b = setOf(setOf(4, 5), setOf(6, 7))
 * println(nestedTuplesAndOperator(a, b)) // Output: setOf(4)
 * '``
 */
fun nestedTuplesAndOperator(a: Set<Set<Int>>, b: Set<Set<Int>>): Set<Int> {

    return a.flatten().intersect(b.flatten())
}
/**
 * Given two nested tuples a and b, return a tuple where the elements are the intersection of tuples a and b.
 *
 * @param a A nested tuple.
 * @param b A nested tuple.
 * @return The intersection of tuples a and b.
 *
 * Example:
 * '``
 * val a = setOf(setOf(1, 2), setOf(3, 4))
 * val b = setOf(setOf(4, 5), setOf(6, 7))
 * println(nestedTuplesAndOperator(a, b)) // Output: setOf(4)
 * '``
 */
fun nestedTuplesAndOperator(a: Set<Set<Int>>, b: Set<Set<Int>>): Set<Int> {
/**
 * Given two nested tuples a and b, return a tuple where the elements are the intersection of tuples a and b.
 *
 * @param a A nested tuple.
 * @param b A nested tuple.
 * @return The intersection of tuples a and b.
 *
 * Example:
 * '``
 * val a = setOf(setOf(1, 2), setOf(3, 4))
 * val b = setOf(setOf(4, 5), setOf(6, 7))
 * println(nestedTuplesAndOperator(a, b)) // Output: setOf(4)
 * '``
 */
fun nestedTuplesAndOperator(a: Set<Set<Int>>, b: Set<Set<Int>>): Set<Int> {

    return a.flatten().intersect(b.flatten())
}