#include <stdio.h>

int main()
{
	int hakoWidth = 0;
	int block = 0;
	int blocks[10000] = { 0 };
	int total = 0;
	int cnt = 0;

	scanf("%d", &hakoWidth);
	scanf("%d", &block);

	for (int i = 0;i < block;i++)
	{
		scanf("%d", &blocks[i]);
	}
	
	for (int i = 0;i < block;i++)
	{
		for (int j = i + 1;j < block;j++)
		{
			if (blocks[j] < blocks[i])
			{
				int tmp = blocks[i];
				blocks[i] = blocks[j];
				blocks[j] = tmp;
			}
		}
	}

	for (;cnt < block;cnt++)
	{
		if (total + blocks[cnt] > hakoWidth)
		{
			break;
		}
		else
		{
			total += blocks[cnt];
		}
	}

	printf("%d", cnt);

	return 0;
}