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**Task** | Statistics

Time limit: | 1.00 s | Memory limit: | 512 MB |

You are in a book shop which sells $n$ different books. You know the price and number of pages of each book.

You have decided that the total price of your purchases will be at most $x$. What is the maximum number of pages you can buy? You can buy each book at most once.

The first input line contains two integers $n$ and $x$: the number of books and the maximum total price.

The next line contains $n$ integers $h_1,h_2,\ldots,h_n$: the price of each book.

The last line contains $n$ integers $s_1,s_2,\ldots,s_n$: the number of pages of each book.

Print one integer: the maximum number of pages.

- $1 \le n \le 1000$

- $1 \le x \le 10^5$

- $1 \le h_i, s_i \le 1000$

Input:

`4 10`

4 8 5 3

5 12 8 1

Output:

`13`

Explanation: You can buy books 1 and 3. Their price is $4+5=9$ and the number of pages is $5+8=13$.