Submission #496080

#	Time	Username	Problem	Language	Result	Execution time	Memory
496080		600Mihnea	Bubble Sort 2 (JOI18_bubblesort2)	C++17	60 / 100	9012 ms	34248 KiB

bubblesort2

#include "bubblesort2.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int INF = (int) 1e9 + 7;
const int NAX = (int) 1e6 + 7;
int N;
int coef[NAX];
int value[NAX];
bool valid[NAX];

void add(int l, int r, int x) {
  for (int j = l; j <= r; j++) {
    value[j] += x;
  }
}

vector<int> innterCountScans(vector<ll> a, vector<int> pos, vector<ll> ChangeValue) {
  int n = (int) a.size();
  int q = (int) pos.size();

  for (int i = 0; i < n; i++) {
    a[i] = a[i] * (ll) (n + 1) + i;
  }


  for (int it = 0; it < q; it++) {
    ChangeValue[it] = ChangeValue[it] * (ll) (n + 1) + pos[it];
  }

  map<ll, int> mp;
  for (auto &x : a) {
    mp[x] = 0;
  }
  for (auto &x : ChangeValue) {
    mp[x] = 0;
  }

  {
    int ij = 0;
    for (auto &it : mp) {
      it.second = ++ij;
    }
    N = ij;
    assert(N <= n + q);
  }

  for (auto &x : a) {
    x = mp[x];
  }
  for (auto &x : ChangeValue) {
    x = mp[x];
  }

  for (int i = 1; i <= N; i++) {
    coef[i] = -INF;
  }
  add(1, N, -INF);


  for (int i = 0; i < n; i++) {
    valid[a[i]] = 1;
    add(a[i], a[i], i - coef[a[i]]);
    coef[a[i]] += i - coef[a[i]];
  }


  vector<int> sol;

  for (int it = 0; it < q; it++) {
    if (1) {
      valid[a[pos[it]]] = 0;
      add(a[pos[it]], a[pos[it]], -(coef[a[pos[it]]] + INF));
      coef[a[pos[it]]] += -(coef[a[pos[it]]] + INF);

      a[pos[it]] = ChangeValue[it];

      valid[a[pos[it]]] = 1;
      add(a[pos[it]], a[pos[it]], pos[it] - coef[a[pos[it]]]);
      coef[a[pos[it]]] += pos[it] - coef[a[pos[it]]];
    }

    int cnt = 0, MX = 0;

    for (int i = 1; i <= N; i++) {
      cnt += valid[i];
      MX = max(MX, coef[i] - cnt);

      assert(value[i] == coef[i]);
    }

    sol.push_back(MX + 1);
  }

  return sol;
}


vector<int> countScans(vector<int> a, vector<int> b, vector<int> c) {
  vector<ll> X, Z;
  for (auto &it : a) {
    X.push_back(it);
  }
  for (auto &it : c) {
    Z.push_back(it);
  }
  return innterCountScans(X, b, Z);
}

• Subtask 1: 17 / 17
• Subtask 2: 21 / 21
• Subtask 3: 22 / 22
• Subtask 4: 0 / 40