Submission #797109

#	Time	Username	Problem	Language	Result	Execution time	Memory
797109		Johann	Diversity (CEOI21_diversity)	C++14	0 / 100	2 ms	212 KiB

diversity

#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef vector<int> vi;
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

int N, Q;
vi A;
vi B;

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

    cin >> N >> Q;
    A.resize(N);
    for (int i = 0; i < N; ++i)
        cin >> A[i];

    while (Q--)
    {
        int lx, rx;
        cin >> lx >> rx;
        --lx;
        B = vi(A.begin() + lx, A.begin() + rx);
        sort(all(B));

        ll ans = 0;

        for (int l = 0; l < sz(B); ++l)
            for (int r = l + 1; r <= sz(B); ++r)
            {
                set<int> tmp(B.begin() + l, B.begin() + r);
                ans += sz(tmp);
            }
        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