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;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var l1 = ReadIntArray();
        var hp = l1[0];
        var sp_types = l1[1]; 
        var sp_damage_list = ReadIntArray();

        var damage_total = sp_damage_list.OrderByDescending(_ => _).Take(sp_types).Sum();
        Console.WriteLine(hp > damage_total ? "No" : "Yes");
    }

    static string[] ReadStringArray()
    {
        var input = Console.ReadLine();
        return input.Split(' ');
    }

    static int[] ReadIntArray()
    {
        var inpArray = ReadStringArray();
        return inpArray.Select(_ => int.Parse(_)).ToArray();
    }
}