Score : $200$ points

Problem Statement

Snuke has $N$ sticks. The length of the $i$-th stick is $l_i$.

Snuke is making a snake toy by joining $K$ of the sticks together.

The length of the toy is represented by the sum of the individual sticks that compose it. Find the maximum possible length of the toy.

Constraints

• $1 \leq K \leq N \leq 50$
• $1 \leq l_i \leq 50$
• $l_i$ is an integer.

Input

Input is given from Standard Input in the following format:

$N$ $K$

$l_1$ $l_2$ $l_3$ $...$ $l_{N}$

Output

Print the answer.

5 3
1 2 3 4 5

12

You can make a toy of length $12$ by joining the sticks of lengths $3$, $4$ and $5$, which is the maximum possible length.

15 14
50 26 27 21 41 7 42 35 7 5 5 36 39 1 45

386