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#include <bits/stdc++.h>
#define fi first
#define sc second
#define pb push_back
#define rep(i,p,k) for(int i=(p);i<(k);++i)
#define forn(i,p,k) for(int i=(p);i<=(k);++i)
#define forr(i,k,p) for(int i=(k)-1;i>=(p);--i)
#define each(a,b) for(auto&a:b)
#define all(v)  begin(v), end(v)
#define RET(smth)   return void(cout<<(smth)<<'\n');
#define sz(v) (int)v.size()
using namespace std;
using pii = pair<int,int>;
using ll = long long;
using Vi = vector<int>;
#ifdef DEBUG
#include "debug.h"
#else
#define debug(...) ;
#endif

int main() {
#ifndef DEBUG
    cin.tie(0) -> sync_with_stdio(0);
#endif
    int n; cin >> n;
    vector<int> V(n);
    rep(i,0,n) {
        int x; cin >> x; --x;
        V[x]++;
    }
    sort(all(V),greater{});
    int can_contain = 0;
    int sum = n;
    rep(i,0,n) {
        can_contain += V[i] - 1;
        sum -= V[i];
        if(can_contain >= sum) return cout << i + 1 << '\n', 0;
    }
    return 0;
}