Problem
Given an array of N integers (1 ≤ N ≤ 15), print all subsets whose sum is exactly K. Each subset on one line, elements separated by spaces, order does not matter.
Input format
Input
input.txt
- The first line contains N and K - The second line contains N integers
Output format
Output
output.txt
- Each valid subset on a line
Example
input
3 5 2 3 5
output
2 3 5
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Sample cases (from the problem)
Sample Case 1
Input
3 5 2 3 5
Expected output
2 3 5
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