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(){
int K,N,i,j,x,y,z;
int a[51];
scanf("%d %d",&N,&K);
for(i=0;i<N;i++){
scanf("%d",&a[i]);
}
z=0;
for(i=0;i<K;i++){
x=0;
y=0;
for(j=0;j<N;j++){
if(x<a[j]){
x=a[j];
y=j;
}
}
z+=x;
a[y]=0;
}
printf("%d\n",z);
return 0;
}