#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  long long int n;
  long double a, b;
  cin >> n >> a >> b;
  long double arr[n];
  long double s = 0;
  for (int i = 0; i <= n - 1; ++i) {
    cin >> arr[i];
    s += arr[i];
  }
  long double ans = (a * (arr[0])) / b;
  sort(arr + 1, arr + n);
  for (int i = n - 1; i >= 0; --i) {
    if (s <= ans) {
      cout << n - (i + 1);
      return 0;
    }
    s = s - arr[i];
  }
}
