Problem:
Score : 200 points

Problem Statement

Raccoon is fighting with a monster.

The health of the monster is H.

Raccoon can use N kinds of special moves. Using the i-th move decreases the monster's health by A_i.
There is no other way to decrease the monster's health.

Raccoon wins when the monster's health becomes 0 or below.

If Raccoon can win without using the same move twice or more, print Yes; otherwise, print No.

Constraints

1 \leq H \leq 10^9

1 \leq N \leq 10^5

1 \leq A_i \leq 10^4

All values in input are integers.

Input

Input is given from Standard Input in the following format:

H N
A_1 A_2 ... A_N

Output

If Raccoon can win without using the same move twice or more, print Yes; otherwise, print No.

Sample Input 1

10 3
4 5 6

Sample Output 1

Yes

The monster's health will become 0 or below after, for example, using the second and third moves.

Sample Input 2

20 3
4 5 6

Sample Output 2

No

Sample Input 3

210 5
31 41 59 26 53

Sample Output 3

Yes

Sample Input 4

211 5
31 41 59 26 53

Sample Output 4

No

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

namespace Test
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    public class Test
    {
        public static void Main(string[] args)
        {
            var test = new Test();
            var n = test.ConvertIntArray(test.ReadInput());
            var h = n[0];
            var array = test.ConvertIntArray(test.ReadInput());
            Array.Sort(array);
            Array.Reverse(array);
            
            for(var i = 0; i<array.Length; i++)
            {
                h -= array[i];
                if(h <= 0)
                {
                    break;
                }
            }

            if(h <= 0)
            {
                Console.WriteLine("Yes");
            }
            else
            {
                Console.WriteLine("No");
            }
        }


        public string[] ReadInput()
        {
            return Console.ReadLine().Split(' ');
        }

        public int[] ConvertIntArray(string[] x)
        {
            var convertedArray = new int[x.Length];
            for (var i = 0; i < x.Length; i++)
            {
                convertedArray[i] = int.Parse(x[i]);
            }

            return convertedArray;
        }

        public double[] ConvertDoubleArray(string[] x)
        {
            var convertedArray = new double[x.Length];
            for (var i = 0; i < x.Length; i++)
            {
                convertedArray[i] = int.Parse(x[i]);
            }

            return convertedArray;
        }

        public long[] ConvertLongArray(string[] x)
        {
            var convertedArray = new long[x.Length];
            for (var i = 0; i < x.Length; i++)
            {
                convertedArray[i] = long.Parse(x[i]);
            }

            return convertedArray;
        }

        public int CountContainWords(string source, string word)
        {
            var count = 0;
            var loopCount = source.Length - (word.Length - 1);
            for (var i = 0; i < loopCount; i++)
            {
                if (source.Substring(i, word.Length) == word)
                {
                    count++;
                }
            }
            return count;
        }
    }
}