#include<iostream>

using namespace std;

int main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int h, n;
    cin >> h >> n;
    for (int i = 0; i < n; i++)
    {
        int damage;
        cin >> damage;
        h -= damage;
        if (h <= 0)
        {
            cout << "Yes";
            return 0;
        }
    }
    cout << "No";
}