#include <bits/stdc++.h>
#include <atcoder/modint>
using namespace std;
using namespace atcoder;
//using mint = modint998244353;
using mint = modint1000000007;
using ll = long long;
using ld = long double;
using pll = pair<ll, ll>;
using tlll = tuple<ll, ll, ll>;
constexpr ll INF = 1LL << 60;
template<class T> bool chmin(T& a, T b) {if (a > b) {a = b; return true;} return false;}
template<class T> bool chmax(T& a, T b) {if (a < b) {a = b; return true;} return false;}
ll safemod(ll A, ll M) {return (A % M + M) % M;}
ll divfloor(ll A, ll B) {if (B < 0) {return divfloor(-A, -B);} return (A - safemod(A, B)) / B;}
ll divceil(ll A, ll B) {if (B < 0) {return divceil(-A, -B);} return divfloor(A + B - 1, B);}
#define FINALANS(A) do {cout << (A) << '\n'; exit(0);} while (false)

ll N, A, B, X, Y;
vector<ll> H;
bool isok(ll K)
{
  if (K < 0)
    return false;
  
  priority_queue<ll> pque;
  for (ll i = 0; i < N; i++)
  {
    pque.push(max(0LL, H.at(i) - K));
  }
  for (ll i = 0; i < A; i++)
  {
    ll h = pque.top();
    pque.pop();
    pque.push(max(0LL, h - X));
  }

  ll S = 0;
  while (!pque.empty())
  {
    S += pque.top();
    pque.pop();
  }
  return S <= B * Y;
}

int main()
{
  cin >> N >> A >> B >> X >> Y;
  H.resize(N);
  for (ll i = 0; i < N; i++)
  {
    cin >> H.at(i);
  }

  cout << (isok(0) ? "Yes" : "No") << endl;
}