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 main(void){
	int n,k;
	scanf("%d %d",&n,&k);
	int l[n];
	int i,j;
	int max[k];
	short flag[n];
	for(i=0;i<n;i++) {scanf("%d", &l[i]);flag[i]=0;}
	for(i=0;i<k;i++) {max[i]=0;}
	int number=0;
	int sum=0;
	for(i=0;i<k;i++){
		for(j=0;j<n;j++){
			if(max[i]<l[j]&&flag[j]==0){
				max[i]=l[j];
				number=j;
			}
		}
		flag[number]=1;
		sum+=max[i];
	}
	printf("%d", sum);
	return 0;
}