#include <cstdio>
#include <cstring>
#include <iostream>
using namespace std;
int main(){
    int h,n,x,s=0;
    cin>>h>>n;
    for(int i=1;i<=n;i++)
    {
    	cin>>x;
    	s+=x;
	}
	if(s>=h)cout<<"Yes"<<endl;
	else cout<<"No"<<endl;
    return 0;
}