import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main
{
    public static void main(String[] args)
    {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Task solver = new Task();
        solver.solve(1, in, out);
        out.close();
    }

    static class Task
    {
        public void solve(int testNumber, Scanner in, PrintWriter out)
        {
            int N = in.nextInt();
            int K = in.nextInt();
            int F[] = CPUtils.readIntArray(N, in);
            Arrays.sort(F);
            int sum = 0;
            for (int i = 0; i < K; i++)
            {
                sum += F[i];
            }
            out.println(sum);
        }

    }

    static class CPUtils
    {
        public static int[] readIntArray(int size, Scanner in)
        {
            int[] array = new int[size];
            for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            }
            return array;
        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Arrays; Arrays java.util import java.util.Scanner; Scanner java.util public class Main
{
    public static void main(String[] args)
    {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Task solver = new Task();
        solver.solve(1, in, out);
        out.close();
    }

    static class Task
    {
        public void solve(int testNumber, Scanner in, PrintWriter out)
        {
            int N = in.nextInt();
            int K = in.nextInt();
            int F[] = CPUtils.readIntArray(N, in);
            Arrays.sort(F);
            int sum = 0;
            for (int i = 0; i < K; i++)
            {
                sum += F[i];
            }
            out.println(sum);
        }

    }

    static class CPUtils
    {
        public static int[] readIntArray(int size, Scanner in)
        {
            int[] array = new int[size];
            for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            }
            return array;
        }

    }
} Main public static void main(String[] args)
    {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Task solver = new Task();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Task solver = new Task();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) Task solver = new Task(); solver new Task() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class Task
    {
        public void solve(int testNumber, Scanner in, PrintWriter out)
        {
            int N = in.nextInt();
            int K = in.nextInt();
            int F[] = CPUtils.readIntArray(N, in);
            Arrays.sort(F);
            int sum = 0;
            for (int i = 0; i < K; i++)
            {
                sum += F[i];
            }
            out.println(sum);
        }

    } Task public void solve(int testNumber, Scanner in, PrintWriter out)
        {
            int N = in.nextInt();
            int K = in.nextInt();
            int F[] = CPUtils.readIntArray(N, in);
            Arrays.sort(F);
            int sum = 0;
            for (int i = 0; i < K; i++)
            {
                sum += F[i];
            }
            out.println(sum);
        } solve {
            int N = in.nextInt();
            int K = in.nextInt();
            int F[] = CPUtils.readIntArray(N, in);
            Arrays.sort(F);
            int sum = 0;
            for (int i = 0; i < K; i++)
            {
                sum += F[i];
            }
            out.println(sum);
        } int N = in.nextInt(); N in.nextInt() in.nextInt in int K = in.nextInt(); K in.nextInt() in.nextInt in int F[] = CPUtils.readIntArray(N, in); F CPUtils.readIntArray(N, in) CPUtils.readIntArray CPUtils N in Arrays.sort(F) Arrays.sort Arrays F int sum = 0; sum 0 for (int i = 0; i < K; i++)
            {
                sum += F[i];
            } int i = 0; int i = 0; i 0 i < K i K i++ i++ i {
                sum += F[i];
            } {
                sum += F[i];
            } sum += F[i] sum F[i] F i out.println(sum) out.println out sum int testNumber testNumber Scanner in in PrintWriter out out static class CPUtils
    {
        public static int[] readIntArray(int size, Scanner in)
        {
            int[] array = new int[size];
            for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            }
            return array;
        }

    } CPUtils public static int[] readIntArray(int size, Scanner in)
        {
            int[] array = new int[size];
            for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            }
            return array;
        } readIntArray {
            int[] array = new int[size];
            for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            }
            return array;
        } int[] array = new int[size]; array new int[size] size for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            } int i = 0; int i = 0; i 0 i < size i size i++ i++ i {
                array[i] = in.nextInt();
            } {
                array[i] = in.nextInt();
            } array[i] = in.nextInt() array[i] array i in.nextInt() in.nextInt in return array; array int size size Scanner in in public class Main
{
    public static void main(String[] args)
    {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Task solver = new Task();
        solver.solve(1, in, out);
        out.close();
    }

    static class Task
    {
        public void solve(int testNumber, Scanner in, PrintWriter out)
        {
            int N = in.nextInt();
            int K = in.nextInt();
            int F[] = CPUtils.readIntArray(N, in);
            Arrays.sort(F);
            int sum = 0;
            for (int i = 0; i < K; i++)
            {
                sum += F[i];
            }
            out.println(sum);
        }

    }

    static class CPUtils
    {
        public static int[] readIntArray(int size, Scanner in)
        {
            int[] array = new int[size];
            for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            }
            return array;
        }

    }
} public class Main
{
    public static void main(String[] args)
    {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Task solver = new Task();
        solver.solve(1, in, out);
        out.close();
    }

    static class Task
    {
        public void solve(int testNumber, Scanner in, PrintWriter out)
        {
            int N = in.nextInt();
            int K = in.nextInt();
            int F[] = CPUtils.readIntArray(N, in);
            Arrays.sort(F);
            int sum = 0;
            for (int i = 0; i < K; i++)
            {
                sum += F[i];
            }
            out.println(sum);
        }

    }

    static class CPUtils
    {
        public static int[] readIntArray(int size, Scanner in)
        {
            int[] array = new int[size];
            for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            }
            return array;
        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main
{
    public static void main(String[] args)
    {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Task solver = new Task();
        solver.solve(1, in, out);
        out.close();
    }

    static class Task
    {
        public void solve(int testNumber, Scanner in, PrintWriter out)
        {
            int N = in.nextInt();
            int K = in.nextInt();
            int F[] = CPUtils.readIntArray(N, in);
            Arrays.sort(F);
            int sum = 0;
            for (int i = 0; i < K; i++)
            {
                sum += F[i];
            }
            out.println(sum);
        }

    }

    static class CPUtils
    {
        public static int[] readIntArray(int size, Scanner in)
        {
            int[] array = new int[size];
            for (int i = 0; i < size; i++)
            {
                array[i] = in.nextInt();
            }
            return array;
        }

    }
}

