Submission #668058

#	Time	Username	Problem	Language	Result	Execution time	Memory
668058		600Mihnea	Adriatic (CEOI13_adriatic)	C++17	25 / 100	2082 ms	27788 KiB

adriatic

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
const int N = 250000 + 7;
const int A = 2500 + 7;
const int INF = (int) 1e9 + 7;
int n;
int posr[N];
int posc[N];
int s[A][A];
int rmin[N];
int cmax[N];

int getsum(int r1, int c1, int r2, int c2)
{
  assert(1 <= r1 && r1 <= r2 && r2 < A);
  assert(1 <= c1 && c1 <= c2 && c2 < A);
  return s[r2][c2] - s[r1 - 1][c2] - s[r2][c1 - 1] + s[r1 - 1][c1 - 1];
}

pair<int, int> next1(pair<int, int> current)
{
  int r = current.first, c = current.second;

  int r_new = r, c_new = c;

  for (int i = 1; i <= n; i++)
  {
    if (posc[i] < c)
    {
      r_new = min(r_new, posr[i]);
    }
    if (posr[i] > r)
    {
      c_new = max(c_new, posc[i]);
    }
  }
  assert(r_new == min(r_new, rmin[c - 1]));
  assert(c_new == max(c_new, cmax[r + 1]));
  return {r_new, c_new};
}

pair<int, int> next2(pair<int, int> current)
{
  int r = current.first, c = current.second;

  int r_new = r, c_new = c;

  for (int i = 1; i <= n; i++)
  {
    if (posc[i] > c)
    {
      r_new = max(r_new, posr[i]);
    }
    if (posr[i] < r)
    {
      c_new = min(c_new, posc[i]);
    }
  }
  return {r_new, c_new};
}

int main()
{
#ifdef ONPC
  freopen ("input.txt", "r", stdin);
#endif // ONPC

#ifndef ONPC
  ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#endif // ONPC

  for (int i = 0; i < N; i++)
  {
    rmin[i] = INF;
  }

  cin >> n;
  for (int i = 1; i <= n; i++)
  {
    cin >> posr[i] >> posc[i];
    s[posr[i]][posc[i]]++;
    rmin[posc[i]] = min(rmin[posc[i]], posr[i]);
  }
  for (int i = 1; i < A; i++)
  {
    rmin[i] = min(rmin[i - 1], rmin[i]);
  }
  for (int i = 1; i < A; i++)
  {
    int c = 0;
    for (int j = 1; j < A; j++)
    {
      c += s[i][j];
      s[i][j] = c + s[i - 1][j];
    }
  }

  for (int init = 1; init <= n; init++)
  {
    ll sum = n - 3;
    pair<int, int> current = {posr[init], posc[init]};
    int curd = 1;
    while (getsum(1, current.second, current.first, A - 1) >= 1)
    {
      curd++;
      sum += getsum(1, current.second, current.first, A - 1);
      current = next1(current);
    }
    curd = 1;
    current = {posr[init], posc[init]};
    while (getsum(current.first, 1, A - 1, current.second) >= 1)
    {
      curd++;
      sum += getsum(current.first, 1, A - 1, current.second);
      current = next2(current);
    }
    cout << sum << "\n";
  }

  return 0;
}
/**
**/

• Subtask 1: 25 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 10
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20