#include <stdio.h>
#include <stdlib.h>

void sort(int* a, int len) {

	int i, j;
	int temp = 0;

	for (i = 0;i < len;i++) {
		for (j = i + 1;j < len;j++) {
			if (a[i] > a[j]) {
				temp = a[i];
				a[i] = a[j];
				a[j] = temp;
			}
		}
	}

	return;
}

int main(void) {
	
	int L, N;
	int *a;
	int i, sum,count;

	sum = 0;
	count = 0;

	scanf("%d", &L);
	scanf("%d", &N);

	a = (int*)malloc(sizeof(int) * N);
	if (a == NULL) exit(1);

	for (i = 0;i < N;i++) scanf("%d", &a[i]);

	sort(a, N);

	if (a[0] <= L) {
		while (1) {
			sum += a[count];
			count++;

			if (sum + a[count] > L) break;
			if (count == N) break;
		}
	}

	printf("%d\n", count);

	free(a);

	return 0;
}