Problem:
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.

Sample Input 1

5 3
1 2 3 4 5

Sample Output 1

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.

Sample Input 2

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

Sample Output 2

386

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

//#include "pch.h"
#include <iostream>
#include<vector>
#include<string>
#include<algorithm>

using namespace std;


int main()
{
	int N, K;
	cin >> N >> K;
	int length[60];
	for (int i = 0; i < N; i++)	cin >> length[i];

	sort(length, length + N, greater<int>());

	/*for(int i=0;i<N;i++)
	cout << "length[" << i << "]" << length[i]<<endl;*/

	int answer=0;

	for (int j = 0; j < K; j++) {
		answer += length[j];
	}

	cout << answer << endl;
	
	
}