import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the number of elements:");
        int n = sc.nextInt();
        int[] arr = new int[n];
        System.out.println("Enter the elements:");
        for (int i = 0; i < n; i++) {
            arr[i] = sc.nextInt();
        }
        System.out.println("Enter the target sum:");
        int target = sc.nextInt();
        System.out.println("Subsets with sum equal to " + target + " are:");
        findSubsets(arr, n, target);
        sc.close();
    }
    private static void findSubsets(int[] arr, int n, int target) {
        List<Integer> currentSubset = new ArrayList<>();
        subsetSumHelper(arr, n, 0, 0, target, currentSubset);
    }
    private static void subsetSumHelper(int[] arr, int n, int index, int currentSum, int target, List<Integer> currentSubset) {
        if (currentSum == target) {
            System.out.println(currentSubset);
            return;
        }
        if (index >= n || currentSum > target) {
            return;
        }
        currentSubset.add(arr[index]);
        subsetSumHelper(arr, n, index + 1, currentSum + arr[index], target, currentSubset);
        currentSubset.remove(currentSubset.size() - 1);
        subsetSumHelper(arr, n, index + 1, currentSum, target, currentSubset);
    }
}