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#include <bits/stdc++.h>
using namespace std;
const int N = 5e5+7;
int cnt[N];
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n;
	cin>>n;
	for(int i = 1;i<=n;i+=1){
		int val;
		cin>>val;
		cnt[val] += 1;
	}
	sort(cnt+1,cnt+1+n,greater<int>());
	int sum = 0;
	int ans = 0;
	for(int i = 1;i<=n;i+=1){
		sum += cnt[i]*2-1;
		ans += 1;
		if (sum>=n){
			break;
		}
	}
	cout<<ans<<'\n';
}