using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Yukicorder
{
    class BlockOfNumber
    {
        public static void Main(String[] args)
        {
            int L = Input(1, 10000);
            int N = Input(1, 10000);
            int[] W = new int[N];
            for(int i = 0; i < N; i++)
            {
                W[i] = Input(1, L);
            }
            int Result = Processing(L, N, W);
            Console.WriteLine(Result);
        }

        public static int Input(int Min , int Max)
        {
            int Number = int.Parse(Console.ReadLine());

            try {
                if (Number < Min || Number > Max)
                {
                    Console.WriteLine(Min + "以上" + Max + "以下で入力してください");
                    Environment.Exit(0);
                }
            }catch (Exception){
                Console.WriteLine("想定外のエラーです");
                Environment.Exit(0);
            }
            return Number;
        }

        public static int Processing(int L , int N , int[] W)
        {
            int Sum = 0;
            int Count = 0;
            for (int i = 0; i < N; i++)
            {
                if (L >= Sum + W[i])
                {
                    Sum += W[i];
                    Count++;
                }else{
                    break;
                }
            }
            return Count;
        }
    }
}