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

#define int long long
#define ll long long
#define ld long double
#define pb push_back
#define nd second
#define st first
#define sz size
#define forr(i, n) for(int i=1;i<=n;i++)
const ll infl=1e18+90;
const int inf=1e9+90;
const int roz=1e6+39;

int ile[roz];
vector<int> wek;

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        int a;
        cin>>a;
        ile[a]++;
    }
    for(int i=n;i>=1;i--)
    {
        if(ile[i]!=0) wek.pb(-ile[i]);
    }
    sort(wek.begin(), wek.end());
    int wyn=0;
    for(auto it:wek)
    {
        wyn++;
        n+=(2*it+1);
        if(n<=0) break;
    }
    cout<<wyn<<"\n";
}