import java.util.*;

class yuki5{
	public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);

		while(stdIn.hasNext()){
			int l = stdIn.nextInt();
			int n = stdIn.nextInt();
			int[] w = new int[n]; 
			for(int i=0;i<n;i++){
				w[i] = stdIn.nextInt();
			}

			Arrays.sort(w);
			/*for(int i=0;i<n-1;i++){
				for(int j=n-1;j>i;j--){
					if(w[j]<w[j-1]){
						int box = w[j];
						w[j] = w[j-1];
						w[j-1] = box;
					}
				}
			}*/

			int k=0;
			int sum = 0;
			while(sum<=l){
				sum+=w[k];
				k++;
			}

			System.out.println(k-1);
		}
	}
}