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)

using System;

namespace abc153_b
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] str1 = Console.ReadLine().Split(' ');
            monster mst = new monster();
            raccoon arai = new raccoon();
            mst.hp = long.Parse(str1[0]);
            arai.skill = int.Parse(str1[1]);
            arai.skillNo = new int[arai.skill];
            string[] str2 = Console.ReadLine().Split(' ');
            for (int i = 0; i < arai.skill; ++i)
            {
                arai.skillNo[i] = int.Parse(str2[i]);
            }
            int damage = 0;
            for (int i = 0; i < arai.skill; ++i)
            {
                damage = damage + arai.skillNo[i];
            }
            if (damage >= mst.hp)
            {
                Console.WriteLine("Yes");
            }
            else
            {
                Console.WriteLine("No");
            }
        }
    }
    /// <summary>
    /// モンスタークラス
    /// </summary>
    class monster
    {
        public long hp;
    }
    /// <summary>
    /// アライグマクラス
    /// </summary>
    class raccoon
    {
        public int skill;
        public int[] skillNo;
    }
}