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: Runtime Error)

#include<iostream>
#include<queue>
#include<vector>
using namespace std;
int main(){
   priority_queue<int> p;
  long unsigned int n,k;
  int nums[100];
  long unsigned int sum=0;
  cin>>n>>k;
  for(int i=0;i<n;i++){
    cin>>nums[i];
  
  }
        for(int i=0;i<n;i++){
            if(p.size()<(unsigned)k){
                p.push(nums[i]);
            }
            else{
                if(p.top()>nums[i]){
                    p.pop();
                    p.push(nums[i]);
                }
                
            }
        }
        while(!p.empty()){
          sum+=p.top();
          p.pop();
        }
        
    
   
cout<<sum;
}