Problem:
Score : 200 points

Problem Statement

A shop sells N kinds of fruits, Fruit 1, \ldots, N, at prices of p_1, \ldots, p_N yen per item, respectively. (Yen is the currency of Japan.)

Here, we will choose K kinds of fruits and buy one of each chosen kind. Find the minimum possible total price of those fruits.

Constraints

1 \leq K \leq N \leq 1000

1 \leq p_i \leq 1000

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N K
p_1 p_2 \ldots p_N

Output

Print an integer representing the minimum possible total price of fruits.

Sample Input 1

5 3
50 100 80 120 80

Sample Output 1

210

This shop sells Fruit 1, 2, 3, 4, and 5 for 50 yen, 100 yen, 80 yen, 120 yen, and 80 yen, respectively.

The minimum total price for three kinds of fruits is 50 + 80 + 80 = 210 yen when choosing Fruit 1, 3, and 5.

Sample Input 2

1 1
1000

Sample Output 2

1000

Solution in C (GCC 9.2.1) (judge verdict: Wrong Answer)

#include <stdlib.h>
#include <stdio.h>
int cmpfunc(const void* a,const void * b){

    return (*(int*)a-*(int*)b);
}
int main(){
    int n,i,j;
    int count =0;
    int k;
    int sum=0;
    scanf("%d",&n);
    scanf("%d",&k);
    if(k > 1000 || n > 1000)return 0;
    if(n < 0 || k < 0)return 0;
    int buf[n];
    for(i=0;i < n;++i){
        scanf("%d",&buf[i]);     
    
    }
        if(n < k){
            return 0;
        }
        if(k==1){
            printf("%d",buf[0]);        
            return 0;
        }
        qsort(buf,n,sizeof(int),cmpfunc);
        for(j=0;j<k;++j){
            sum +=buf[j];
            count+=1;
            
        
    }
    printf("%d",sum);


    return 0;
}