#include <bits/stdc++.h>
using namespace std;
const long long INF = 2e18;
const long long N = 1e5 + 2;
const long long mod = 1e9 + 7;
const long double eps = 1E-7;
long double n, A, B, C, a[N];
int main() {
  ios_base::sync_with_stdio(0);
  cin >> n >> A >> B;
  for (int i = 1; i <= int(n); i++) {
    cin >> a[i];
    C = C + a[i];
  }
  if (a[1] * A / C >= B) {
    cout << 0;
    return 0;
  }
  sort(a + 2, a + 1 + int(n));
  for (int i = n; i > 1; i--) {
    C -= a[i];
    if (a[1] * A / C >= B) {
      cout << n - i + 1;
      return 0;
    }
  }
}
