abc153_b.cpp

// iagorrr ;)
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define fastio                      \
  ios_base::sync_with_stdio(false); \
  cin.tie(0);                       \
  cout.tie(0);
#define rep(i, l, r) for (int i = (l); i < (r); i++)
#define len(__x) (ll) __x.size()
using ll = long long;
using vll = vector<ll>;
using pll = pair<ll, ll>;
using vll2d = vector<vll>;
using vi = vector<int>;
using pii = pair<int, int>;
using vii = vector<pii>;
using vc = vector<char>;
#define all(a) a.begin(), a.end()
#define INV(xxxx) \
  for (auto &xxx : xxxx) cin >> xxx;
#define PRINTV(___x) \
  for_each(all(___x), [](ll &____x) { cout << ____x << ' '; }), cout << '\n';
#define snd second
#define fst first
#define pb(___x) push_back(___x)
#define mp(___a, ___b) make_pair(___a, ___b)
#define eb(___x) emplace_back(___x)
#define rsz(___x, ___n) resize(___x, ___n)

void dbg_out() { cerr << endl; }
template <typename H, typename... T>
void dbg_out(H h, T... t) {
  cerr << ' ' << h;
  dbg_out(t...);
}
#define dbg(...)                 \
  {                              \
    cerr << #__VA_ARGS__ << ':'; \
    dbg_out(__VA_ARGS__);        \
  }
const ll INF = 1e18;

void run() {

  ll h;
  cin >> h;

  ll n;
  cin >> n;

  vll xs(n);
  INV(xs);

  ll xsum = 0;
  for_each(all(xs), [&xsum](ll &x) { xsum += x; });
  if(xsum >= h) {

    cout << "Yes\n";
  }
  else {

      cout << "No\n";
  }
}
int32_t main(void) {
  fastio;
  int t;
  t = 1;
  // cin >> t;
  while (t--) run();
}

// AC, ad-hoc