class Program
    {
        /// <summary>
        /// コンストラクタ
        /// </summary>
        static void Main()
        {
            int l = int.Parse(Console.ReadLine()!);
            int n = int.Parse(Console.ReadLine()!);
            string size = Console.ReadLine()!;
            string[] CharSize = size.Split(' ');
            int[] sizeList = new int[n];
            for (int i = 0; i < n; i++)
            {
                sizeList[i] = int.Parse(CharSize[i]);
            }
            Array.Sort(sizeList);

            int count = 0;
            int nowSize = 0;
            while (count < n && nowSize + sizeList[count] <= l)
            {
                nowSize += sizeList[count];
                count++;
            }

            Console.WriteLine(count);

        }
    }