Submission #667893

#	Time	Username	Problem	Language	Result	Execution time	Memory
667893		600Mihnea	Treasure (different grader from official contest) (CEOI13_treasure2)	C++17	72 / 100	1 ms	468 KiB

treasure

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

using namespace std;

const int N = 100 + 7;
int s[4][N][N];
bool deja = 0;
bool ok;
int n;


int get(int type, int r, int c)
{
  if (type == 0)
  {
    if (r <= 0 || c <= 0)
    {
      return 0;
    }
    ok &= (s[type][r][c] != -1);
    return s[type][r][c];
  }
  if (type == 1)
  {
    if (r <= 0 || c > n)
    {
      return 0;
    }
    ok &= (s[type][r][c] != -1);
    return s[type][r][c];
  }
  if (type == 2)
  {
    if (r > n || c <= 0)
    {
      return 0;
    }
    ok &= (s[type][r][c] != -1);
    return s[type][r][c];
  }
  if (type == 3)
  {
    if (r > n || c > n)
    {
      return 0;
    }
    ok &= (s[type][r][c] != -1);
    return s[type][r][c];
  }

  assert(0);
}

int what(int r, int c)
{
  ok = 1;
  int sm;
  sm = get(0, r, c) - get(0, r - 1, c) - get(0, r, c - 1) + get(0, r - 1, c - 1);

  if (ok)
  {
    return sm;
  }

  ok = 1;
  sm = get(1, r, c) - get(1, r - 1, c) - get(1, r, c + 1) + get(1, r - 1, c + 1);

  if (ok)
  {
    return sm;
  }

  ok = 1;
  sm = get(2, r, c) - get(2, r + 1, c) - get(2, r, c - 1) + get(2, r + 1, c - 1);

  if (ok)
  {
    return sm;
  }

  ok = 1;
  sm = get(3, r, c) - get(3, r + 1, c) - get(3, r, c + 1) + get(3, r + 1, c + 1);

  if (ok)
  {
    return sm;
  }

  cout << "bad " << r << " " << c << "\n";

  return 0;
 /// assert(0);
}



void findTreasure(int nn)
{
  n = nn;
  for (int k = 0; k < 4; k++)
  {
    for (int i = 0; i < N; i++)
    {
      for (int j = 0; j < N; j++)
      {
        s[k][i][j] = -1;
      }
    }
  }
  assert(deja == 0);
  deja = 1;
  for (int i = 1; i <= n; i++)
  {
    for (int j = 1; j <= n; j++)
    {
      if (n <= 15)
      {
        s[0][i][j] = countTreasure(1, 1, i, j);
        continue;
      }
      if (j <= n / 2 + 1)
      {
        if (i <= n / 2)
        {
          s[3][i][j] = countTreasure(i, j, n, n);
        }
        if (n / 2 - 1 <= i)
        {
          s[1][i][j] = countTreasure(1, j, i, n);
        }
      }
      if (n / 2 <= j)
      {
        if (i <= n / 2)
        {
          s[2][i][j] = countTreasure(i, 1, n, j);
        }
        if (n / 2 - 1 <= i)
        {
          s[0][i][j] = countTreasure(1, 1, i, j);
        }
      }
    }
  }


  for (int i = 1; i <= n; i++)
  {
    for (int j = 1; j <= n; j++)
    {
      if (what(i, j))
      {
        Report(i, j);
      }
    }
  }
}

• Subtask 1: 72 / 100