#include <bits/stdc++.h>
using namespace std;
const int N = 100010;
const int mod = (int)1e9 + 7;
int p[N];
int main() {
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  int n, a, b;
  cin >> n >> a >> b;
  int sum = 0;
  for (int i = 1; i <= n; i++) {
    cin >> p[i];
    sum += p[i];
  }
  sort(p + 2, p + 1 + n);
  int ans = 0;
  for (int i = n; i; i--) {
    int vol = p[1] * a / sum;
    if (vol >= b) {
      ans = n - i;
      break;
    }
    sum -= p[i];
  }
  cout << ans;
  return 0;
}
