import java.util.Scanner;
import java.util.Arrays;

public class block {
	protected static String wide[];
	protected static int[] wideN;
	public static void main(String args[]){
		//文字の読み込み
		Scanner sc=new Scanner(System.in);
		String[] line=new String[3];
		line[0]=sc.nextLine();
		line[1]=sc.nextLine();
		line[2]=sc.nextLine();
		//文字を数値に変換
		int[] n=new int[3];
		n[0]=Integer.parseInt(line[0]);
		n[1]=Integer.parseInt(line[1]);
		
		wide=line[2].split(" ",0);
		
		wideN=new int[wide.length];
		int m=0;
		while(m<wide.length){
			wideN[m]=Integer.parseInt(wide[m]);
			m++;
		}
		
		Arrays.sort(wideN);//配列を昇順に並べる
		
		int count=0,rent=n[0];
		for(int i=0;i<n[1];i++){
			if(rent-wideN[i]>=0){
				rent=rent-wideN[i];
				count++;
			}else{
				break;
			}
		}
		
		System.out.println(count);
	}
}