Submission #964854

#	Time	Username	Problem	Language	Result	Execution time	Memory
964854		MinaRagy06	Diversity (CEOI21_diversity)	C++17	4 / 100	182 ms	1368 KiB

diversity

#include <bits/stdc++.h>
using namespace std;
#define ll long long
 
int main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	int n, q;
	cin >> n >> q;
	int a[n];
	for (int i = 0; i < n; i++) {
		cin >> a[i];
	}
	while (q--) {
		int l, r;
		cin >> l >> r;
		l--, r--;
		map<int, int> frq;
		for (int i = l; i <= r; i++) {
			frq[a[i]]++;
		}
		vector<int> v;
		for (auto [x, cnt] : frq) {
			v.push_back(cnt);
		}
		n = v.size();
		sort(v.begin(), v.end());
		ll mn = 1e18;
		do {
			ll ans = 0;
			for (int i = 0; i < n; i++) {
				ans += v[i] * (v[i] + 1) / 2;
				for (int j = i + 1; j < n; j++) {
					ans += 1ll * v[i] * v[j] * (j - i + 1);
				}
			}
			mn = min(mn, ans);
		} while (next_permutation(v.begin(), v.end()));
		cout << mn << '\n';
	}
	return 0;
}

• Subtask 1: 4 / 4
• Subtask 2: 0 / 10
• Subtask 3: 0 / 8
• Subtask 4: 0 / 16
• Subtask 5: 0 / 26
• Subtask 6: 0 / 36