#include<cstdio>
#include<algorithm>
#define rep(i,a) for(int i=0;i<(a);++i)

const int MAX_N = 10000;

int L, N, W[MAX_N];

int main()
{
	scanf( "%d%d", &L, &N );
	rep( i, N )
		scanf( "%d", W+i );

	std::sort( W, W+N );

	int sum = 0;
	rep( i, N )
	{
		if( sum+W[i] > L )
		{ printf( "%d\n", i ); return 0; }

		sum += W[i];
	}

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

	return 0;
}