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// Krzysztof Łukasiewicz
// O(n log n) solution
//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
using namespace std;
namespace debug {
template <class c> struct rge { c b, e; };
template <class c> rge<c> range(c i, c j) { return rge<c>{i, j}; }
template <class c> char spk(...);
template <class c> auto spk(c *a) -> decltype(cerr << *a, 0);
struct stream {
  ~stream() { cerr << endl; }
  template <class c>
  typename enable_if<sizeof spk<c>(0) != 1, stream &>::type operator<<(c i) {
    cerr << boolalpha << i;
    return *this;
  }
  template <class c>
  typename enable_if<sizeof spk<c>(0) == 1, stream &>::type operator<<(c i) {
    return *this << range(begin(i), end(i));
  }
  template <class a, class b> stream &operator<<(pair<a, b> p) {
    return *this << "(" << p.first << ", " << p.second << ")";
  }
  template <class c> stream &operator<<(rge<c> d) {
    *this << "[";
    for (auto it = d.b; it != d.e; it++)
      *this << ", " + 2 * (it == d.b) << *it;
    return *this << "]";
  }
  stream &_dbg(const string &s, int i, int b) { return *this; }
  template <class c, class... cs>
  stream &_dbg(const string &s, int i, int b, c arg, cs... args) {
    if (i == (int)(s.size()))
      return (*this << ": " << arg);
    b += (s[i] == '(') + (s[i] == '[') + (s[i] == '{') - (s[i] == ')') -
         (s[i] == ']') - (s[i] == '}');
    return (s[i] == ',' && b == 0)
               ? (*this << ": " << arg << "     ")._dbg(s, i + 1, b, args...)
               : (s[i] == ' ' ? *this : *this << s[i])
                     ._dbg(s, i + 1, b, arg, args...);
  }
};
} // namespace debug
#ifdef DEBUG
#define dout debug::stream()
#define dbg(...)                                                               \
  ((dout << "line:" << __LINE__ << " >> ")                                     \
       ._dbg(#__VA_ARGS__, 0, 0, __VA_ARGS__))
#else
#define dout
#define dbg(...)
#endif
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

int main() {
  cin.tie(nullptr);
  ios_base::sync_with_stdio(false);
  int n;
  cin >> n;
  vector<int> A(n);
  for (auto &a : A)
    cin >> a;
  sort(A.begin(), A.end());
  vector<int> counts;
  for (int i = 0; i < n; i++) {
    int count = 1;
    while (i + 1 < n && A[i] == A[i + 1]) {
      count++;
      i++;
    }
    counts.push_back(count);
  }
  sort(counts.begin(), counts.end(), greater<int>());
  int sum = 0;
  for (int i = 0; i < (int)counts.size(); i++) {
    sum += counts[i];
    if (sum >= n - sum + i + 1) {
      cout << i + 1 << '\n';
      return 0;
    }
  }
  return 0;
}