Submission #684996

#	Time	Username	Problem	Language	Result	Execution time	Memory
684996		moonhero	Diversity (CEOI21_diversity)	C++14	0 / 100	7094 ms	212 KiB

diversity

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const long long N = 3e5 + 5;
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n, q; cin >> n >> q;
    vector <int> a(n);
    for (int i = 1; i <= n; i++) cin >> a[i];
    int l, r; cin >> l >> r;
    ll ans = 0;
    for (int i = 0; i < n; i++) {
        set<int> s;
        for (int j = i; j < n; j++) {
            s.insert(a[j]);
            ans += s.size();
        }
    } while (next_permutation(a.begin(), a.end())) {
        ll res = 0;
        for (int i = 0; i < n; i++) {
            set<int> s;
            for (int j = i; j < n; j++) {
                s.insert(a[j]);
                res += s.size();
            }
        } ans = min(ans, res);
    } cout << ans << '\n';
    return 0;
}

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