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#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define eb emplace_back
//mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
#define mod 998244353
#define ll long long
#define inf 0x3f3f3f3f
#define INF 0x3f3f3f3f3f3f3f3f
inline int read()
{
	char ch=getchar(); int nega=1; while(!isdigit(ch)) {if(ch=='-') nega=-1; ch=getchar();}
	int ans=0; while(isdigit(ch)) {ans=ans*10+ch-48;ch=getchar();}
	if(nega==-1) return -ans;
	return ans;
}
void print(vector<int> x){for(int i=0;i<(int)x.size();i++) printf("%d%c",x[i]," \n"[i==(int)x.size()-1]);}
#define N 500005
int a[N],cnt[N],n;
signed main()
{
	cin>>n;
	for(int i=1;i<=n;i++) a[i]=read(),cnt[a[i]]++;
	sort(cnt+1,cnt+n+1,greater<int>());
	int sum=0,lef=n;
	for(int i=1;i<=n;i++)
	{
		sum+=cnt[i]-1;
		lef-=cnt[i];
		if(sum>=lef)
		{
			cout<<i<<endl;
			return 0;
		}
	}
	return 0;
}