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

public class Remainder
{
    static int[] PrimeFactors;

    static public void Main()
    {
        var HN = Console.ReadLine().Split(' ').Select(x => long.Parse(x)).ToArray();
        var H = HN[0];
        var N = HN[1];
        var A =   Console.ReadLine().Split(' ').Select(x => long.Parse(x)).ToArray();
      
        if(H <= A.Sum()){
          Console.WriteLine("Yes");
        }else{
          Console.WriteLine("No");
        }
        

        

    }

    static void PublicFactorization(int n)
    {
        int i = 2;
        int tmp = n;

        while(i*i <= n)
        {
            if(tmp % i == 0)
            {
                tmp /= i;
                PrimeFactors[i]++;
            }
            else
            {
                i++;
            }
        }

        if(tmp != 1)
        {
            PrimeFactors[tmp]++;
        }
    }

}