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 JavaScript (Node.js 12.16.1) (judge verdict: Accepted)

'use strict';
function Main(stdin){
  const input = stdin.trim().split(/\r?\n/g);
  const N = Number(input[0].split(' ')[0]);
  const K = Number(input[0].split(' ')[1]);
  let P = input[1] .split(' ').map(str => Number(str));
  P.sort(((a, b) => a - b));
  let sum = 0;
  for(let i = 0; i < K; i++){
      sum += P[i];
  }
  console.log(sum);
}

// 固定
Main(require("fs").readFileSync("/dev/stdin", "utf8"));