import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.StringTokenizer;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;

public class Main {

    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskA solver = new TaskA();
        solver.call(in,out);
        out.close();
    }

    static class TaskA {
        public void call(InputReader in, PrintWriter out) {
            int n ,k  ,sum=0  ;
            n = in.nextInt();
            k = in.nextInt() ;
            int[] arr= new int[n];
            for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            }

            Arrays.sort(arr);
            for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            }
            out.println(sum);

        }
    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }
        public long nextLong(){
            return Long.parseLong(next());
        }

    }
} 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.ArrayList; ArrayList java.util import java.util.Arrays; Arrays java.util import java.util.StringTokenizer; StringTokenizer java.util import java.io.IOException; IOException java.io import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io import java.io.InputStream; InputStream java.io public class Main {

    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskA solver = new TaskA();
        solver.call(in,out);
        out.close();
    }

    static class TaskA {
        public void call(InputReader in, PrintWriter out) {
            int n ,k  ,sum=0  ;
            n = in.nextInt();
            k = in.nextInt() ;
            int[] arr= new int[n];
            for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            }

            Arrays.sort(arr);
            for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            }
            out.println(sum);

        }
    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }
        public long nextLong(){
            return Long.parseLong(next());
        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskA solver = new TaskA();
        solver.call(in,out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskA solver = new TaskA();
        solver.call(in,out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out InputReader in = new InputReader(inputStream); in new InputReader(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) TaskA solver = new TaskA(); solver new TaskA() solver.call(in,out) solver.call solver in out out.close() out.close out String[] args args static class TaskA {
        public void call(InputReader in, PrintWriter out) {
            int n ,k  ,sum=0  ;
            n = in.nextInt();
            k = in.nextInt() ;
            int[] arr= new int[n];
            for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            }

            Arrays.sort(arr);
            for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            }
            out.println(sum);

        }
    } TaskA public void call(InputReader in, PrintWriter out) {
            int n ,k  ,sum=0  ;
            n = in.nextInt();
            k = in.nextInt() ;
            int[] arr= new int[n];
            for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            }

            Arrays.sort(arr);
            for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            }
            out.println(sum);

        } call {
            int n ,k  ,sum=0  ;
            n = in.nextInt();
            k = in.nextInt() ;
            int[] arr= new int[n];
            for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            }

            Arrays.sort(arr);
            for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            }
            out.println(sum);

        } int n n k k sum=0  ; sum 0 n = in.nextInt() n in.nextInt() in.nextInt in k = in.nextInt() k in.nextInt() in.nextInt in int[] arr= new int[n]; arr new int[n] n for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            } int i = 0; int i = 0; i 0 i <arr.length i arr.length arr arr.length i++ i++ i {
                arr[i] = in.nextInt();
            } {
                arr[i] = in.nextInt();
            } arr[i] = in.nextInt() arr[i] arr i in.nextInt() in.nextInt in Arrays.sort(arr) Arrays.sort Arrays arr for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            } int i = 0; int i = 0; i 0 i <k i k i++ i++ i {
                sum+=arr[i];

            } {
                sum+=arr[i];

            } sum+=arr[i] sum arr[i] arr i out.println(sum) out.println out sum InputReader in in PrintWriter out out static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }
        public long nextLong(){
            return Long.parseLong(next());
        }

    } InputReader public BufferedReader reader; reader public StringTokenizer tokenizer; tokenizer public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        } InputReader {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        } reader = new BufferedReader(new InputStreamReader(stream), 32768) reader new BufferedReader(new InputStreamReader(stream), 32768) tokenizer = null tokenizer null InputStream stream stream public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        } next {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        } while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            } tokenizer == null || !tokenizer.hasMoreTokens() tokenizer == null tokenizer null !tokenizer.hasMoreTokens() tokenizer.hasMoreTokens() tokenizer.hasMoreTokens tokenizer {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            } try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                } IOException e {
                    throw new RuntimeException(e);
                } throw new RuntimeException(e); new RuntimeException(e) {
                    tokenizer = new StringTokenizer(reader.readLine());
                } tokenizer = new StringTokenizer(reader.readLine()) tokenizer new StringTokenizer(reader.readLine()) return tokenizer.nextToken(); tokenizer.nextToken() tokenizer.nextToken tokenizer public int nextInt() {
            return Integer.parseInt(next());
        } nextInt {
            return Integer.parseInt(next());
        } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next public long nextLong(){
            return Long.parseLong(next());
        } nextLong {
            return Long.parseLong(next());
        } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next public class Main {

    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskA solver = new TaskA();
        solver.call(in,out);
        out.close();
    }

    static class TaskA {
        public void call(InputReader in, PrintWriter out) {
            int n ,k  ,sum=0  ;
            n = in.nextInt();
            k = in.nextInt() ;
            int[] arr= new int[n];
            for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            }

            Arrays.sort(arr);
            for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            }
            out.println(sum);

        }
    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }
        public long nextLong(){
            return Long.parseLong(next());
        }

    }
} public class Main {

    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskA solver = new TaskA();
        solver.call(in,out);
        out.close();
    }

    static class TaskA {
        public void call(InputReader in, PrintWriter out) {
            int n ,k  ,sum=0  ;
            n = in.nextInt();
            k = in.nextInt() ;
            int[] arr= new int[n];
            for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            }

            Arrays.sort(arr);
            for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            }
            out.println(sum);

        }
    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }
        public long nextLong(){
            return Long.parseLong(next());
        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.StringTokenizer;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;

public class Main {

    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskA solver = new TaskA();
        solver.call(in,out);
        out.close();
    }

    static class TaskA {
        public void call(InputReader in, PrintWriter out) {
            int n ,k  ,sum=0  ;
            n = in.nextInt();
            k = in.nextInt() ;
            int[] arr= new int[n];
            for (int i = 0; i <arr.length ; i++) {
                arr[i] = in.nextInt();
            }

            Arrays.sort(arr);
            for (int i = 0; i <k ; i++) {
                sum+=arr[i];

            }
            out.println(sum);

        }
    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }
        public long nextLong(){
            return Long.parseLong(next());
        }

    }
}