import java.util.Scanner;

public class Main {

	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();
		}
		
		for(int i=0; i<N-1; i++) {
			for(int j=0; j<N-i-1; j++) {
				if(W[j] > W[j+1]) {
					int temp = W[j+1];
					W[j+1] = W[j];
					W[j] = temp;
				}
			}
		}
		
		int sum = 0;
		int cnt = 0;
		for(int i=0; i<N; i++) {
			if(sum + W[i] > L) {
				break;
			} else { 
				sum += W[i];
				cnt++;
			}
		}
		
		System.out.println(cnt);
	}

}