//package atcoder;
 
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
//import java.math.BigDecimal;
 
public class Main {
	public static void main(String [] args) {
	    int K,N;
	    
		Scanner sc = new Scanner(System.in);
		N = sc.nextInt();
		K = sc.nextInt();
		int p[] = new int [N];
		for(int i=0;i<N;i++) {
			p[i] = sc.nextInt();
		}
		Arrays.sort(p);
		/*for(int k=0;k<N;k++) {
			System.out.println(p[k]);
		}*/
		int goukei = 0;
		for(int j=0;j<K;j++) {
			goukei = goukei+p[j];
		}
		System.out.println(goukei);
		
	}
}
/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