import java.util.Arrays;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int n = fs.nextInt();
        int k = fs.nextInt();
        int[] a = new int[n];
        for(int i=0; i<n; i++)
            a[i] = fs.nextInt();
        
        Arrays.sort(a);
        long sum = 0;
        for(int i=0; i<k; i++)
            sum += a[i];
        System.out.print(sum);
    }

    static class FastScanner {
        BufferedReader br = null;
        StringTokenizer st;
    
        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }
    
        String next() {
            while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
    
        int nextInt() {
            return Integer.parseInt(next());
        }
    
        long nextLong() {
            return Long.parseLong(next());
        }
    
        double nextDouble() {
            return Double.parseDouble(next());
        }
    
        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
} import java.util.Arrays; Arrays java.util import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.StringTokenizer; StringTokenizer java.util public class Main {
    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int n = fs.nextInt();
        int k = fs.nextInt();
        int[] a = new int[n];
        for(int i=0; i<n; i++)
            a[i] = fs.nextInt();
        
        Arrays.sort(a);
        long sum = 0;
        for(int i=0; i<k; i++)
            sum += a[i];
        System.out.print(sum);
    }

    static class FastScanner {
        BufferedReader br = null;
        StringTokenizer st;
    
        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }
    
        String next() {
            while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
    
        int nextInt() {
            return Integer.parseInt(next());
        }
    
        long nextLong() {
            return Long.parseLong(next());
        }
    
        double nextDouble() {
            return Double.parseDouble(next());
        }
    
        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
} Main public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int n = fs.nextInt();
        int k = fs.nextInt();
        int[] a = new int[n];
        for(int i=0; i<n; i++)
            a[i] = fs.nextInt();
        
        Arrays.sort(a);
        long sum = 0;
        for(int i=0; i<k; i++)
            sum += a[i];
        System.out.print(sum);
    } main {
        FastScanner fs = new FastScanner();
        int n = fs.nextInt();
        int k = fs.nextInt();
        int[] a = new int[n];
        for(int i=0; i<n; i++)
            a[i] = fs.nextInt();
        
        Arrays.sort(a);
        long sum = 0;
        for(int i=0; i<k; i++)
            sum += a[i];
        System.out.print(sum);
    } FastScanner fs = new FastScanner(); fs new FastScanner() int n = fs.nextInt(); n fs.nextInt() fs.nextInt fs int k = fs.nextInt(); k fs.nextInt() fs.nextInt fs int[] a = new int[n]; a new int[n] n for(int i=0; i<n; i++)
            a[i] = fs.nextInt(); int i=0; int i=0; i 0 i<n i n i++ i++ i a[i] = fs.nextInt(); a[i] = fs.nextInt() a[i] a i fs.nextInt() fs.nextInt fs Arrays.sort(a) Arrays.sort Arrays a long sum = 0; sum 0 for(int i=0; i<k; i++)
            sum += a[i]; int i=0; int i=0; i 0 i<k i k i++ i++ i sum += a[i]; sum += a[i] sum a[i] a i System.out.print(sum) System.out.print System.out System System.out sum String[] args args static class FastScanner {
        BufferedReader br = null;
        StringTokenizer st;
    
        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }
    
        String next() {
            while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
    
        int nextInt() {
            return Integer.parseInt(next());
        }
    
        long nextLong() {
            return Long.parseLong(next());
        }
    
        double nextDouble() {
            return Double.parseDouble(next());
        }
    
        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    } FastScanner BufferedReader br = null; br null StringTokenizer st; st public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        } FastScanner {
            br = new BufferedReader(new InputStreamReader(System.in));
        } br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) String next() {
            while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } next {
            while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } IOException e {
                    e.printStackTrace();
                } e.printStackTrace() e.printStackTrace e {
                    st = new StringTokenizer(br.readLine());
                } st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st int nextInt() {
            return Integer.parseInt(next());
        } nextInt {
            return Integer.parseInt(next());
        } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next long nextLong() {
            return Long.parseLong(next());
        } nextLong {
            return Long.parseLong(next());
        } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next double nextDouble() {
            return Double.parseDouble(next());
        } nextDouble {
            return Double.parseDouble(next());
        } return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        } nextLine {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        } String str = ""; str "" try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } IOException e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                str = br.readLine();
            } str = br.readLine() str br.readLine() br.readLine br return str; str public class Main {
    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int n = fs.nextInt();
        int k = fs.nextInt();
        int[] a = new int[n];
        for(int i=0; i<n; i++)
            a[i] = fs.nextInt();
        
        Arrays.sort(a);
        long sum = 0;
        for(int i=0; i<k; i++)
            sum += a[i];
        System.out.print(sum);
    }

    static class FastScanner {
        BufferedReader br = null;
        StringTokenizer st;
    
        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }
    
        String next() {
            while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
    
        int nextInt() {
            return Integer.parseInt(next());
        }
    
        long nextLong() {
            return Long.parseLong(next());
        }
    
        double nextDouble() {
            return Double.parseDouble(next());
        }
    
        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
} public class Main {
    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int n = fs.nextInt();
        int k = fs.nextInt();
        int[] a = new int[n];
        for(int i=0; i<n; i++)
            a[i] = fs.nextInt();
        
        Arrays.sort(a);
        long sum = 0;
        for(int i=0; i<k; i++)
            sum += a[i];
        System.out.print(sum);
    }

    static class FastScanner {
        BufferedReader br = null;
        StringTokenizer st;
    
        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }
    
        String next() {
            while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
    
        int nextInt() {
            return Integer.parseInt(next());
        }
    
        long nextLong() {
            return Long.parseLong(next());
        }
    
        double nextDouble() {
            return Double.parseDouble(next());
        }
    
        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
} Main
import java.util.Arrays;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int n = fs.nextInt();
        int k = fs.nextInt();
        int[] a = new int[n];
        for(int i=0; i<n; i++)
            a[i] = fs.nextInt();
        
        Arrays.sort(a);
        long sum = 0;
        for(int i=0; i<k; i++)
            sum += a[i];
        System.out.print(sum);
    }

    static class FastScanner {
        BufferedReader br = null;
        StringTokenizer st;
    
        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }
    
        String next() {
            while(st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
    
        int nextInt() {
            return Integer.parseInt(next());
        }
    
        long nextLong() {
            return Long.parseLong(next());
        }
    
        double nextDouble() {
            return Double.parseDouble(next());
        }
    
        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
}