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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
		try{
			Scanner sc = new Scanner(System.in);
			int N = sc.nextInt();
			int K = sc.nextInt();
			int[] list = new int[N];
			for(int i = 0 ; i < N ; i++){
				list[i] = sc.nextInt();
			}
			Arrays.sort(list);
			int result = 0;
			for(int i = N-1 ; i > N-K-1; i--){
				result += list[i];
			}
			System.out.println(result);
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}