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#include <bits/stdc++.h>
using namespace std;
 
#define fwd(i, a, n) for (int i = (a); i < (n); i ++)
#define rep(i, n) fwd(i, 0, n)
#define all(X) begin(X), end(X)
#define sz(X) ((int)X.size())
#define st first
#define nd second
#define pii pair<int, int>
#define vi vector<int>
#define ll long long
 
#ifdef LOC
auto &operator<<(auto &out, pair<auto, auto> a) {
	return out << "(" << a.st << ", " << a.nd << ")";
}
 
auto &operator<<(auto &out, auto a) {
	out << "{";
	for (auto b : a)
		out << b << ", ";
	return out << "}";
}
 
void dump(auto... x) { ((cerr << x << ", "), ...) << '\n'; }
#define debug(x...) cerr << __LINE__ << ": [" #x "]: ", dump(x)
#else
#define debug(...) 0
#endif
 
int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
    int n; cin>>n;
	vector<int> cnt(n);
	rep(i, n){
		int x; cin>>x;
		x--;
		cnt[x]++;
	}
	sort(all(cnt), greater<int>());
	debug(cnt);
	int sum = 0;
	rep(i, n){
		sum += cnt[i];
		if(2 * sum - (i+1) >= n){
			cout<<(i+1)<<"\n";
			return 0;
		}
	}
	return 0;
}