import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n = sc.nextInt(), choo = sc.nextInt();
		int[] x=new int[n];
		for(int i=0;i<n;i++)
			x[i] = sc.nextInt();
		long sum = 0;
		Arrays.sort(x);
		for(int i=0;i<choo;i++)
			sum+=x[i];
		System.out.println(sum);
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n = sc.nextInt(), choo = sc.nextInt();
		int[] x=new int[n];
		for(int i=0;i<n;i++)
			x[i] = sc.nextInt();
		long sum = 0;
		Arrays.sort(x);
		for(int i=0;i<choo;i++)
			sum+=x[i];
		System.out.println(sum);
	}
} Main public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n = sc.nextInt(), choo = sc.nextInt();
		int[] x=new int[n];
		for(int i=0;i<n;i++)
			x[i] = sc.nextInt();
		long sum = 0;
		Arrays.sort(x);
		for(int i=0;i<choo;i++)
			sum+=x[i];
		System.out.println(sum);
	} main {
		Scanner sc=new Scanner(System.in);
		int n = sc.nextInt(), choo = sc.nextInt();
		int[] x=new int[n];
		for(int i=0;i<n;i++)
			x[i] = sc.nextInt();
		long sum = 0;
		Arrays.sort(x);
		for(int i=0;i<choo;i++)
			sum+=x[i];
		System.out.println(sum);
	} Scanner sc=new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt() n sc.nextInt() sc.nextInt sc choo = sc.nextInt(); choo sc.nextInt() sc.nextInt sc int[] x=new int[n]; x new int[n] n for(int i=0;i<n;i++)
			x[i] = sc.nextInt(); int i=0; int i=0; i 0 i<n i n i++ i++ i x[i] = sc.nextInt(); x[i] = sc.nextInt() x[i] x i sc.nextInt() sc.nextInt sc long sum = 0; sum 0 Arrays.sort(x) Arrays.sort Arrays x for(int i=0;i<choo;i++)
			sum+=x[i]; int i=0; int i=0; i 0 i<choo i choo i++ i++ i sum+=x[i]; sum+=x[i] sum x[i] x i System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n = sc.nextInt(), choo = sc.nextInt();
		int[] x=new int[n];
		for(int i=0;i<n;i++)
			x[i] = sc.nextInt();
		long sum = 0;
		Arrays.sort(x);
		for(int i=0;i<choo;i++)
			sum+=x[i];
		System.out.println(sum);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n = sc.nextInt(), choo = sc.nextInt();
		int[] x=new int[n];
		for(int i=0;i<n;i++)
			x[i] = sc.nextInt();
		long sum = 0;
		Arrays.sort(x);
		for(int i=0;i<choo;i++)
			sum+=x[i];
		System.out.println(sum);
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n = sc.nextInt(), choo = sc.nextInt();
		int[] x=new int[n];
		for(int i=0;i<n;i++)
			x[i] = sc.nextInt();
		long sum = 0;
		Arrays.sort(x);
		for(int i=0;i<choo;i++)
			sum+=x[i];
		System.out.println(sum);
	}
}
