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: Wrong Answer)

#include <stdio.h>

int main(void)
{
	int n, k;
	int l[50];
	int i, j;
	int length = 0;
	int *max;
	
	memset(l, 0, sizeof(l));
	scanf("%d %d", &n, &k);
	for(i=0; i < n; i++) {
		scanf("%d", &l[i]);
	}
	
	for(j = 0; j < k; j++) {
		max = &l[0];
		for(i = 1; i < n; i++) {
			if(*max < l[i]) {
				max = &l[i];
			}
		}
		length += max;
		*max = 0;
	}
	printf("%d\n", length);
	
	return 0;
}