#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, a, b;
  cin >> n >> a >> b;
  int s1[n];
  for (int i = 0; i < n; i++) cin >> s1[i];
  int s;
  s = s1[0] * a / b;
  int sum = 0, c = -1;
  sort(s1 + 1, s1 + n);
  for (int i = 0; i < n; i++) {
    sum = sum + s1[i];
    if (sum > s) {
      c = i;
      break;
    }
  }
  if (c != -1)
    cout << n - c << "\n";
  else
    cout << "0\n";
}
