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#include "bits/stdc++.h" // Ignacy Boehlke
using namespace std;     // XIII LO Szczecin
auto operator<<(auto&o,auto p)->decltype(p.first,o){return o<<'{'<<p.first<<", "<<p.second<<'}';}
auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<'{';int i=2;for(auto e:x)o<<(", ")+i<<e,i=0;return o<<'}';}
#ifdef DEBUG
#define PF(x...)fprintf(stderr,x)
#define LOG(x...)cerr<<"["#x"]: ",[](auto...$){((cerr<<$<<"; "),...)<<'\n';}(x)
#else
#define PF(...)(void)0
#define LOG(...)(void)0
#endif
#define FOR(a,b,c)for(int a=(b);a<=(c);++a)
#define REP(a,b)FOR(a,0,(b)-1)
#define ALL(x)(x).begin(), (x).end()
#define fi first
#define se second
using ll=int64_t;

int main() {
        cin.tie(0)->sync_with_stdio(0);
        int n;
        cin >> n;
        vector<int> freq(n);
        REP(i, n) {
                int x;
                cin >> x; --x;
                ++freq[x];
        }
        sort(freq.rbegin(), freq.rend());
        int res, cnt = 0;
        for (res = 0; cnt < n; ++res)
                cnt += freq[res] * 2 - 1;
        cout << res << '\n';
}