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