#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long n, a, b;
  cin >> n >> a >> b;
  long long arr[n + 1];
  long long i;
  for (i = 1; i <= n; i++) cin >> arr[i];
  double tmp = ((double)arr[1] * (double)a) / (double)b;
  if (n >= 2) sort(arr + 2, arr + n + 1);
  double tmp2 = 0.0;
  for (i = 1; i <= n; i++) tmp2 += (double)arr[i];
  for (i = n; i >= 1; i--) {
    if (tmp2 > tmp)
      tmp2 -= arr[i];
    else
      break;
  }
  cout << n - i;
  return 0;
}
