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Submission #798550

# Submission time Handle Problem Language Result Execution time Memory
798550 2023-07-30T20:20:12 Z Johann Diversity (CEOI21_diversity) C++14
4 / 100
 1 ms 340 KB 
#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()

const ll INF = 1e18;
int N, Q;
vi A, AA;
ll ans;
vi P;
vi answerPermutation;

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

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

    while (Q--)
    {
        int l, r;
        cin >> l >> r;
        --l;
        int n = r - l;

        A = vi(AA.begin() + l, AA.begin() + r);

        vi heatMap(*max_element(all(A)) + 1, 0);
        for (int i = 0; i < sz(A); ++i)
            ++heatMap[A[i]];
        vi cnts;
        for (int i = 0; i < sz(heatMap); ++i)
            if (heatMap[i])
                cnts.push_back(heatMap[i]);

        sort(all(cnts));
        ll num = sz(cnts);
        ans = INF;

        for (int i = 0; i < (1 << num); ++i)
        {
            // if all were different
            ll tmp = n * (n + 1) * (n + 1) / 2 - (2 * n + 1) * (n + 1) * n / 6;

            ll right = 0;
            ll left = 0;

            for (int j = 0; j < num; ++j)
            {
                ll x = cnts[j];
                // either with left or right endpoint in set
                tmp -= (n - x) * x * (x - 1) / 2;
                // if both are in set
                tmp -= x * x * (x - 1) / 2 - (2 * x - 1) * x * (x - 1) / 6;

                if (i & (1 << j))
                { // left
                    tmp -= (x - 1) * left * (n - left - x);
                    left += x;
                }
                else
                { // right
                    tmp -= (x - 1) * right * (n - right - x);
                    right += x;
                }
            }
            ans = min(ans, tmp);
        }

        cout << ans << "\n";
    }

    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 320 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Incorrect 1 ms 340 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 320 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Incorrect 1 ms 340 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 320 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Incorrect 1 ms 340 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Incorrect 1 ms 340 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #6
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Incorrect 1 ms 340 KB Output isn't correct
14 Halted 0 ms 0 KB -