#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, A, B;
  while (cin >> n >> A >> B) {
    int data[100010];
    int sum = 0;
    for (int i = 1; i <= n; i++) {
      cin >> data[i];
      sum += data[i];
    }
    int S1 = data[1];
    sort(data + 2, data + n + 1);
    int t = n;
    while (S1 * A / sum < B) {
      sum -= data[t];
      t--;
    }
    cout << n - t << endl;
  }
  return 0;
}
