1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
#include <bits/stdc++.h>

using namespace std;

int main()
{
    cin.tie(0);
    ios_base::sync_with_stdio(0);

    int n;
    cin >> n;

    int zliczanko[n+1];
    for (int i = 0; i <= n; i++) {
        zliczanko[i] = 0;
    }
    for (int i = 0, t; i < n; i++) {
        cin >> t;
        zliczanko[t]++;
    }
    sort (zliczanko, zliczanko + n + 1);
    /*for (int i = 0; i < n+1; i++) {
        cout << zliczanko[i] << ' ';
    }
    cout << "\n";*/
    int lp = 0, rp = n, wynik = 0;
    while (lp <= rp && zliczanko[rp] > 0) {
        wynik++;
        int a = zliczanko[lp], b = zliczanko[rp];
        while (b-a > 0 && lp <= rp) {
            b-=a;
            lp++;
            a = zliczanko[lp];
        }
        zliczanko[lp] = zliczanko[lp] - b + 1;
        rp--;
    }

    cout << wynik;
    return 0;
}