#include <stdio.h>

int main(void) {
	int l, n;
	scanf("%d%d", &l, &n);
	int box[10001];
	for (int i = 0; i < n; i++) {
		scanf("%d", &box[i]);
	}
	int temp;
	for (int i = 0; i < n - 1; i++) {
		for (int j = i + 1; j < n; j++) {
			if (box[i] > box[j]) {
				temp = box[i];
				box[i] = box[j];
				box[j] = temp;
			}
		}
	}
	int sum = 0, count = 0;
	for (int i = 0; i < n; i++) {
		if (sum + box[i] <= l) {
			sum += box[i];
			count++;
		}
	}
	printf("%d", count);
	return 0;
}