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#include <bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    int n; cin >> n;
    vector<int> v(n);
    for (auto &i : v) cin >> i;

    map<int, int> m;
    for (auto i : v) m[i]++;

    vector<int> occurence;
    for (auto pair : m) occurence.push_back(pair.second);
    sort(occurence.begin(), occurence.end(), greater<int>());

    int sum = 0;
    for (int i = 0; i < n; i++) {
        sum += 2 * occurence[i] - 1;
        if (sum >= n) {
            cout << i+1 << "\n";
            return 0;
        }
    }
    cout << n << "\n";
    return 0;
}