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Submission #708155

# Submission time Handle Problem Language Result Execution time Memory
708155 2023-03-11T07:18:01 Z vjudge1 Diversity (CEOI21_diversity) C++11
0 / 100
 1 ms 212 KB 
#include <bits/stdc++.h>

using namespace std;
using LL = long long;

int main() {
  ios::sync_with_stdio(false), cin.tie(0);
  int n, q;
  cin >> n >> q;
  vector<int> A(n);
  map<int, int> M;
  for (int &a : A) cin >> a, M[a] = 0;

  int k = 0;
  for (auto &p : M) p.second = k++;
  vector<LL> cnt(k);
  for (int &a : A) a = M[a], ++cnt[a];

  int L, R;
  cin >> L >> R;
  assert(q == 1 && L == 1 && R == n);

  LL ans = 0;
  for (LL c : cnt) ans += c * (c + 1) / 2 + c * (n - c);
  sort(cnt.begin(), cnt.end());
  // LL l = 0, r = 0, gi = 1;
  LL G[2], gi = 1;
  for (LL c : cnt) {
    ans += G[gi] * (n - c - G[gi]), G[gi] += c;
    // if (gi)
    //   ans += l * (n - c - l), l += c;
    // else
    //   ans += r * (n - c - r), r += c;
    gi ^= 1;
  }
  cout << ans << '\n';
  return 0;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 36.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -