Submission #287333

#	Time	Username	Problem	Language	Result	Execution time	Memory
287333		Haunted_Cpp	Rectangles (IOI19_rect)	C++17	0 / 100	5074 ms	384 KiB

rect

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

using namespace std;

long long count_rectangles(vector<vector<int> > mat) {
  const int r = mat.size();
  const int c = mat[0].size();
  if (r <= 2) {
    return 0;
  }
  if (c <= 2) {
    return 0;
  }
  // Subtask #1 && Subtask #2
  long long res = 0;
  for (int i = 1; i < c - 1; i++) {
    for (int j = i; j < c - 1; j++) {
      vector<int> valid_linha(r);
      for (int x = 1; x < r - 1; x++) {
        int mx = 0;
        for (int z = i; z <= j; z++) {
          mx = max(mx, mat[x][z]);
        }
        valid_linha[x] = (mx < mat[x][i - 1] && mx < mat[x][j + 1]);
      }    
      vector<int> valid_up(r);
      vector<int> valid_down(r);     
      for (int x = 1; x < r - 1; x++) {
        bool up = true, down = true;
        for (int z = i; z <= j; z++) {
          up &= (mat[x][z] < mat[x - 1][z]);
          down &= (mat[x][z] < mat[x + 1][z]);
        }
        valid_up[x] = up;
        valid_down[x] = down;
      }
      for (int x = 1; x < r - 1; x++) {
        if (!valid_up[x]) continue;
        if (!valid_linha[x]) break;
        for (int z = x; z < r - 1; z++) {
          if (!valid_down[z]) continue;
          if (!valid_linha[z]) break;
          ++res;
        }
      }
      
    }
  }
	return res;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 7
• Subtask 3: 0 / 12
• Subtask 4: 0 / 22
• Subtask 5: 0 / 10
• Subtask 6: 0 / 13
• Subtask 7: 0 / 28