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
#include <bits/stdc++.h>

using namespace std;

const int N = 500000 + 7;

int n, cnt[N];

int main() {
	ios::sync_with_stdio(false), cin.tie(nullptr);

	cin >> n;
	for (int i = 1; i <= n; i++) {
		int a;
		cin >> a;

		cnt[a]++;
	}

	sort(cnt + 1, cnt + 1 + n);

	int ans = 0, sum = 0;
	int rest = n;
	
	for (int i = n; i >= 1; i--) {
		ans++;
		sum += cnt[i] - 1;
		rest -= cnt[i];

		if (rest <= sum) {
			break;
		}
	}

	cout << ans << '\n';

}