#include <bits/stdc++.h>
using namespace std;
const int maxn = 100005;
int n, A, B, S, s1, ans;
int data[maxn];
int main(void) {
  cin >> n >> A >> B;
  for (int i = 0; i < n; i++) {
    cin >> data[i];
    S += data[i];
  }
  s1 = data[0];
  sort(data + 1, data + n);
  for (ans = n - 1; S > (s1 * A) / B; ans--) {
    S -= data[ans];
  }
  cout << n - ans - 1 << endl;
  return 0;
}
