Problem8577--DPL_1_F : 0-1 Knapsack Problem II

8577: DPL_1_F : 0-1 Knapsack Problem II

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Time Limit : 1.000 sec  Memory Limit : 256 MiB

Description

You have $N$ items that you want to put them into a knapsack. Item $i$ has value vi and weight $w_i$.

You want to find a subset of items to put such that:

  • The total value of the items is as large as possible.
  • The items have combined weight at most $W$, that is capacity of the knapsack.

Find the maximum total value of items in the knapsack.

Input

The first line consists of the integers N and W. 

In the following N lines, the value and weight of the $i$-th item $v_i\ w_i$ are given.

Output

Print the maximum total values of the items in a line.

Constraints

$1 ≤ N ≤ 100$
$1 ≤ vi ≤ 100$
$1 ≤ w_i ≤ 10,000,000$
$1 ≤ W ≤ 1,000,000,000$

Sample 1 Input

4 5
4 2
5 2
2 1
8 3

Sample 1 Output

13

Sample 2 Input

2 20
5 9
4 10

Sample 2 Output

9

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