#include <bits/stdc++.h>
using namespace std;
inline void read(int &first) {
  register int c = getchar();
  first = 0;
  int neg = 0;
  for (; ((c < 48 || c > 57) && c != '-'); c = getchar())
    ;
  if (c == '-') {
    neg = 1;
    c = getchar();
  }
  for (; c > 47 && c < 58; c = getchar()) {
    first = (first << 1) + (first << 3) + c - 48;
  }
  if (neg) first = -first;
}
inline void read(long long &first) {
  register int c = getchar();
  first = 0;
  int neg = 0;
  for (; ((c < 48 || c > 57) && c != '-'); c = getchar())
    ;
  if (c == '-') {
    neg = 1;
    c = getchar();
  }
  for (; c > 47 && c < 58; c = getchar()) {
    first = (first << 1) + (first << 3) + c - 48;
  }
  if (neg) first = -first;
}
inline void writeln(long long first) {
  char buffor[21];
  register int i = 0;
  int neg = 0;
  if (first < 0) {
    neg = 1;
    first = -first;
  }
  do {
    buffor[i++] = (first % 10) + '0';
    first /= 10;
  } while (first);
  i--;
  if (neg) putchar('-');
  while (i >= 0) putchar(buffor[i--]);
  putchar('\n');
}
inline void write(long long first) {
  char buffor[21];
  register int i = 0;
  int neg = 0;
  if (first < 0) {
    neg = 1;
    first = -first;
  }
  do {
    buffor[i++] = (first % 10) + '0';
    first /= 10;
  } while (first);
  i--;
  if (neg) putchar('-');
  while (i >= 0) putchar(buffor[i--]);
  putchar(' ');
}
priority_queue<int, vector<int>, less<int>> heap;
int n, A, B, sz, FirstHole;
int sum;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cin >> n >> A >> B;
  for (int i = 1, _b = (n); i <= _b; i++) {
    cin >> sz;
    if (i != 1)
      heap.push(sz);
    else
      FirstHole = sz;
    sum += sz;
  }
  int dem = 0;
  if (1LL * A * FirstHole >= 1LL * B * sum) {
    cout << dem;
    return 0;
  }
  while (heap.size()) {
    int cur = heap.top();
    heap.pop();
    sum -= cur;
    dem++;
    if (1LL * A * FirstHole >= 1LL * B * sum) {
      cout << dem;
      return 0;
    }
  }
}
