#K50192. Borrowing Books Challenge

    ID: 28810 Type: Default 1000ms 256MiB

Borrowing Books Challenge

Borrowing Books Challenge

You are given n books, each with a certain number of pages. Your task is to determine if it is possible to select a non-empty subset of these books such that the sum of their pages is exactly equal to a given number p.

Formally, given a list of integers \(a_1, a_2, \ldots, a_n\) representing the number of pages in each book, decide whether there exists a subset \(S\) (with \(S \neq \emptyset\)) such that:

[ \sum_{i \in S} a_i = p ]

If such a subset exists, print YES; otherwise, print NO.

inputFormat

The input is given via standard input (stdin) and has the following format:

  1. The first line contains an integer t, the number of test cases.
  2. For each test case:
    1. A line containing two integers n and p, where n is the number of books and p is the required total number of pages.
    2. A line containing n space-separated integers representing the page counts of each book.

outputFormat

For each test case, output a single line to standard output (stdout) containing either YES or NO, depending on whether it is possible to select a non-empty subset of books whose page counts sum exactly to p.

## sample
3
5 8
2 3 5 2 1
4 10
2 2 2 2
3 6
1 2 3
YES

NO YES

</p>