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#include <bits/stdc++.h>

#define ll long long
#define ld long double
#define endl '\n'
#define st first
#define nd second
#define pb push_back
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
using namespace std;
int inf=1000000007;
ll infl=1000000000000000007;
ll mod=1000000007;
ll mod1=998244353;

const int N=500007;

int ile[N];

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        int x;
        cin>>x;
        ile[x]++;
    }
    vector<int>V;
    for(int i=1;i<=n;i++) V.pb(ile[i]);
    sort(all(V),greater<int>());
    int S=0;
    for(int i=1;i<=n;i++)
    {
        S+=V[i-1];
        if(S-i>=n-S)
        {
            cout<<i<<endl;
            break;
        }
    }


    return 0;
}