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 (GCC 5.4.1) (judge verdict: Accepted)

#include<stdio.h>
int a[50];
int main()
{
	int n,k,i,j,sum=0,x;
	scanf("%d%d",&n,&k);
	for(i=0;i<n;i++)
	scanf("%d",&a[i]);
	for(i=0;i<n-1;i++)
	{
		for(j=i+1;j<n;j++)
		{
			if(a[j]>a[i])
			{
			x=a[j];
			a[j]=a[i];
			a[i]=x;
		    }
		}
	}
	for(i=0;i<k;i++)
	sum=sum+a[i];
	printf("%d",sum);
	
}