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


public class Main2 {


    public static void main(String[] args) {

    	Scanner sc=new Scanner(System.in);

    	int L=sc.nextInt();
    	int N=sc.nextInt();

    	int[] w=new int[N];

    	for(int i=0;i<N;i++) {

    		w[i]=sc.nextInt();

    	}

    	Arrays.sort(w);

    	int index=0;
    	int counter=0;
    	
    	boolean reachedlastindex=false;

    	while(true) {

    		if(L-w[index]>=0 && !reachedlastindex) {

    			L-=w[index];
    			counter++;
    			
    			if(index==N-1) {
    				reachedlastindex=true;
    			}else{
    			    index++;
    			}

    		}else {
    			break;
    		}

    	}

    	System.out.println(counter);

    	sc.close();

    }




}