#include<cstdio>
#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;
}