

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer tokenizer = null;
    int totalCases, testNum;

    PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));

    void solve() throws IOException {

    }

    void execute() throws IOException {
        int n = ni();
        int k = ni();
        int[] arr = new int[n];
        for(int i = 0; i < n; i++) {
            arr[i] = ni();
        }
        Arrays.sort(arr);
        int res = 0;
        for (int i = 0; i < k; i++) {
            res += arr[i];
        }
        out.println(res);
        out.close();
    }

    public static void main(String[] args) throws IOException {
        new Main().execute();
    }

    void debug(Object... os) {
        System.out.println(Arrays.deepToString(os));
    }

    int ni() throws IOException {
        return Integer.parseInt(ns());
    }

    long nl() throws IOException {
        return Long.parseLong(ns());
    }

    double nd() throws IOException {
        return Double.parseDouble(ns());
    }

    String ns() throws IOException {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(br.readLine());
        }
        return tokenizer.nextToken();
    }

    String nline() throws IOException {
        tokenizer = null;
        return br.readLine();
    }

    boolean input() throws IOException {
        return true;
    }

}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz